parent
070cb92661
commit
7d2f97f2f6
@ -1,2 +1,5 @@ |
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pico.sublime-project |
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pico.sublime-workspace |
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composer.lock |
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composer.phar |
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vendor/twig/twig/doc/* |
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vendor/twig/twig/ext/* |
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vendor/twig/twig/test/* |
@ -0,0 +1,5 @@ |
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{ |
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"require": { |
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"twig/twig": "1.12.*" |
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} |
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} |
@ -1,42 +0,0 @@ |
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<?php |
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|
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if (!isset($argv[1])) |
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{ |
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die('You must provide the version (1.0.0)'); |
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} |
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|
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if (!isset($argv[2])) |
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{ |
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die('You must provide the stability (alpha, beta, or stable)'); |
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} |
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|
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$context = array( |
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'date' => date('Y-m-d'), |
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'time' => date('H:m:00'), |
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'version' => $argv[1], |
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'api_version' => $argv[1], |
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'stability' => $argv[2], |
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'api_stability' => $argv[2], |
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); |
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|
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$context['files'] = ''; |
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$path = realpath(dirname(__FILE__).'/../lib/Twig'); |
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foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path), RecursiveIteratorIterator::LEAVES_ONLY) as $file) |
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{ |
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if (preg_match('/\.php$/', $file)) |
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{ |
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$name = str_replace($path.'/', '', $file); |
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$context['files'] .= ' <file install-as="Twig/'.$name.'" name="'.$name.'" role="php" />'."\n"; |
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} |
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} |
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|
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$template = file_get_contents(dirname(__FILE__).'/../package.xml.tpl'); |
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$content = preg_replace_callback('/\{\{\s*([a-zA-Z0-9_]+)\s*\}\}/', 'replace_parameters', $template); |
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file_put_contents(dirname(__FILE__).'/../package.xml', $content); |
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|
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function replace_parameters($matches) |
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{ |
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global $context; |
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|
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return isset($context[$matches[1]]) ? $context[$matches[1]] : null; |
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} |
@ -1,489 +0,0 @@ |
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Extending Twig |
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============== |
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|
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Twig can be extended in many ways; you can add extra tags, filters, tests, |
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operators, global variables, and functions. You can even extend the parser |
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itself with node visitors. |
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|
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.. note:: |
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|
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This chapter describes how to extend Twig easily. If you want to reuse |
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your changes in different projects or if you want to share them with |
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others, you should then create an extension as described in the next |
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chapter. |
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|
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Before extending Twig, you must understand the differences between all the |
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different possible extension points and when to use them. |
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|
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First, remember that Twig has two main language constructs: |
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|
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* ``{{ }}``: used to print the result of an expression evaluation; |
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|
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* ``{% %}``: used to execute statements. |
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|
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To understand why Twig exposes so many extension points, let's see how to |
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implement a *Lorem ipsum* generator (it needs to know the number of words to |
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generate). |
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|
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You can use a ``lipsum`` *tag*: |
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|
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.. code-block:: jinja |
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|
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{% lipsum 40 %} |
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|
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That works, but using a tag for ``lipsum`` is not a good idea for at least |
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three main reasons: |
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|
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* ``lipsum`` is not a language construct; |
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* The tag outputs something; |
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* The tag is not flexible as you cannot use it in an expression: |
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|
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.. code-block:: jinja |
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|
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{{ 'some text' ~ {% lipsum 40 %} ~ 'some more text' }} |
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|
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In fact, you rarely need to create tags; and that's good news because tags are |
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the most complex extension point of Twig. |
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|
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Now, let's use a ``lipsum`` *filter*: |
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|
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.. code-block:: jinja |
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|
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{{ 40|lipsum }} |
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|
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Again, it works, but it looks weird. A filter transforms the passed value to |
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something else but here we use the value to indicate the number of words to |
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generate. |
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|
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Next, let's use a ``lipsum`` *function*: |
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|
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.. code-block:: jinja |
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|
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{{ lipsum(40) }} |
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|
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Here we go. For this specific example, the creation of a function is the |
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extension point to use. And you can use it anywhere an expression is accepted: |
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|
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.. code-block:: jinja |
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|
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{{ 'some text' ~ ipsum(40) ~ 'some more text' }} |
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|
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{% set ipsum = ipsum(40) %} |
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|
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Last but not the least, you can also use a *global* object with a method able |
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to generate lorem ipsum text: |
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|
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.. code-block:: jinja |
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|
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{{ text.lipsum(40) }} |
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|
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As a rule of thumb, use functions for frequently used features and global |
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objects for everything else. |
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|
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Keep in mind the following when you want to extend Twig: |
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|
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========== ========================== ========== ========================= |
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What? Implementation difficulty? How often? When? |
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========== ========================== ========== ========================= |
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*macro* trivial frequent Content generation |
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*global* trivial frequent Helper object |
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*function* trivial frequent Content generation |
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*filter* trivial frequent Value transformation |
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*tag* complex rare DSL language construct |
||||
*test* trivial rare Boolean decision |
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*operator* trivial rare Values transformation |
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========== ========================== ========== ========================= |
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|
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Globals |
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------- |
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|
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A global variable is like any other template variable, except that it's |
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available in all templates and macros:: |
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|
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$twig = new Twig_Environment($loader); |
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$twig->addGlobal('text', new Text()); |
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|
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You can then use the ``text`` variable anywhere in a template: |
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|
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.. code-block:: jinja |
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|
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{{ text.lipsum(40) }} |
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|
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Filters |
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------- |
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|
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A filter is a regular PHP function or an object method that takes the left |
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side of the filter (before the pipe ``|``) as first argument and the extra |
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arguments passed to the filter (within parentheses ``()``) as extra arguments. |
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|
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Defining a filter is as easy as associating the filter name with a PHP |
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callable. For instance, let's say you have the following code in a template: |
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|
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.. code-block:: jinja |
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|
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{{ 'TWIG'|lower }} |
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|
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When compiling this template to PHP, Twig looks for the PHP callable |
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associated with the ``lower`` filter. The ``lower`` filter is a built-in Twig |
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filter, and it is simply mapped to the PHP ``strtolower()`` function. After |
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compilation, the generated PHP code is roughly equivalent to: |
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|
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.. code-block:: html+php |
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|
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<?php echo strtolower('TWIG') ?> |
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|
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As you can see, the ``'TWIG'`` string is passed as a first argument to the PHP |
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function. |
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|
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A filter can also take extra arguments like in the following example: |
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|
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.. code-block:: jinja |
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|
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{{ now|date('d/m/Y') }} |
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|
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In this case, the extra arguments are passed to the function after the main |
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argument, and the compiled code is equivalent to: |
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|
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.. code-block:: html+php |
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|
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<?php echo twig_date_format_filter($now, 'd/m/Y') ?> |
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|
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Let's see how to create a new filter. |
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|
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In this section, we will create a ``rot13`` filter, which should return the |
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`rot13`_ transformation of a string. Here is an example of its usage and the |
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expected output: |
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|
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.. code-block:: jinja |
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|
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{{ "Twig"|rot13 }} |
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|
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{# should displays Gjvt #} |
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|
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Adding a filter is as simple as calling the ``addFilter()`` method on the |
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``Twig_Environment`` instance:: |
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|
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$twig = new Twig_Environment($loader); |
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$twig->addFilter('rot13', new Twig_Filter_Function('str_rot13')); |
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|
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The second argument of ``addFilter()`` is an instance of ``Twig_Filter``. |
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Here, we use ``Twig_Filter_Function`` as the filter is a PHP function. The |
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first argument passed to the ``Twig_Filter_Function`` constructor is the name |
||||
of the PHP function to call, here ``str_rot13``, a native PHP function. |
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|
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Let's say I now want to be able to add a prefix before the converted string: |
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|
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.. code-block:: jinja |
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|
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{{ "Twig"|rot13('prefix_') }} |
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|
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{# should displays prefix_Gjvt #} |
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|
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As the PHP ``str_rot13()`` function does not support this requirement, let's |
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create a new PHP function:: |
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|
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function project_compute_rot13($string, $prefix = '') |
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{ |
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return $prefix.str_rot13($string); |
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} |
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|
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As you can see, the ``prefix`` argument of the filter is passed as an extra |
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argument to the ``project_compute_rot13()`` function. |
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|
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Adding this filter is as easy as before:: |
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|
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$twig->addFilter('rot13', new Twig_Filter_Function('project_compute_rot13')); |
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|
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For better encapsulation, a filter can also be defined as a static method of a |
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class. The ``Twig_Filter_Function`` class can also be used to register such |
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static methods as filters:: |
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|
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$twig->addFilter('rot13', new Twig_Filter_Function('SomeClass::rot13Filter')); |
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|
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.. tip:: |
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|
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In an extension, you can also define a filter as a static method of the |
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extension class. |
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|
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Environment aware Filters |
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~~~~~~~~~~~~~~~~~~~~~~~~~ |
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|
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The ``Twig_Filter`` classes take options as their last argument. For instance, |
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if you want access to the current environment instance in your filter, set the |
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``needs_environment`` option to ``true``:: |
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|
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$filter = new Twig_Filter_Function('str_rot13', array('needs_environment' => true)); |
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|
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Twig will then pass the current environment as the first argument to the |
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filter call:: |
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|
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function twig_compute_rot13(Twig_Environment $env, $string) |
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{ |
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// get the current charset for instance |
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$charset = $env->getCharset(); |
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|
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return str_rot13($string); |
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} |
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|
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Automatic Escaping |
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~~~~~~~~~~~~~~~~~~ |
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|
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If automatic escaping is enabled, the output of the filter may be escaped |
||||
before printing. If your filter acts as an escaper (or explicitly outputs html |
||||
or javascript code), you will want the raw output to be printed. In such a |
||||
case, set the ``is_safe`` option:: |
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|
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$filter = new Twig_Filter_Function('nl2br', array('is_safe' => array('html'))); |
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|
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Some filters may have to work on already escaped or safe values. In such a |
||||
case, set the ``pre_escape`` option:: |
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|
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$filter = new Twig_Filter_Function('somefilter', array('pre_escape' => 'html', 'is_safe' => array('html'))); |
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|
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Dynamic Filters |
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~~~~~~~~~~~~~~~ |
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|
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.. versionadded:: 1.5 |
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Dynamic filters support was added in Twig 1.5. |
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|
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A filter name containing the special ``*`` character is a dynamic filter as |
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the ``*`` can be any string:: |
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|
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$twig->addFilter('*_path', new Twig_Filter_Function('twig_path')); |
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|
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function twig_path($name, $arguments) |
||||
{ |
||||
// ... |
||||
} |
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|
||||
The following filters will be matched by the above defined dynamic filter: |
||||
|
||||
* ``product_path`` |
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* ``category_path`` |
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|
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A dynamic filter can define more than one dynamic parts:: |
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|
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$twig->addFilter('*_path_*', new Twig_Filter_Function('twig_path')); |
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|
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function twig_path($name, $suffix, $arguments) |
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{ |
||||
// ... |
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} |
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|
||||
The filter will receive all dynamic part values before the normal filters |
||||
arguments. For instance, a call to ``'foo'|a_path_b()`` will result in the |
||||
following PHP call: ``twig_path('a', 'b', 'foo')``. |
||||
|
||||
Functions |
||||
--------- |
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|
||||
A function is a regular PHP function or an object method that can be called from |
||||
templates. |
||||
|
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.. code-block:: jinja |
||||
|
||||
{{ constant("DATE_W3C") }} |
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|
||||
When compiling this template to PHP, Twig looks for the PHP callable |
||||
associated with the ``constant`` function. The ``constant`` function is a built-in Twig |
||||
function, and it is simply mapped to the PHP ``constant()`` function. After |
||||
compilation, the generated PHP code is roughly equivalent to: |
||||
|
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.. code-block:: html+php |
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|
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<?php echo constant('DATE_W3C') ?> |
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|
||||
Adding a function is similar to adding a filter. This can be done by calling the |
||||
``addFunction()`` method on the ``Twig_Environment`` instance:: |
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|
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$twig = new Twig_Environment($loader); |
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$twig->addFunction('functionName', new Twig_Function_Function('someFunction')); |
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|
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You can also expose extension methods as functions in your templates:: |
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|
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// $this is an object that implements Twig_ExtensionInterface. |
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$twig = new Twig_Environment($loader); |
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$twig->addFunction('otherFunction', new Twig_Function_Method($this, 'someMethod')); |
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|
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Functions also support ``needs_environment`` and ``is_safe`` parameters. |
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|
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Dynamic Functions |
||||
~~~~~~~~~~~~~~~~~ |
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|
||||
.. versionadded:: 1.5 |
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Dynamic functions support was added in Twig 1.5. |
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|
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A function name containing the special ``*`` character is a dynamic function |
||||
as the ``*`` can be any string:: |
||||
|
||||
$twig->addFunction('*_path', new Twig_Function_Function('twig_path')); |
||||
|
||||
function twig_path($name, $arguments) |
||||
{ |
||||
// ... |
||||
} |
||||
|
||||
The following functions will be matched by the above defined dynamic function: |
||||
|
||||
* ``product_path`` |
||||
* ``category_path`` |
||||
|
||||
A dynamic function can define more than one dynamic parts:: |
||||
|
||||
$twig->addFilter('*_path_*', new Twig_Filter_Function('twig_path')); |
||||
|
||||
function twig_path($name, $suffix, $arguments) |
||||
{ |
||||
// ... |
||||
} |
||||
|
||||
The function will receive all dynamic part values before the normal functions |
||||
arguments. For instance, a call to ``a_path_b('foo')`` will result in the |
||||
following PHP call: ``twig_path('a', 'b', 'foo')``. |
||||
|
||||
Tags |
||||
---- |
||||
|
||||
One of the most exciting feature of a template engine like Twig is the |
||||
possibility to define new language constructs. This is also the most complex |
||||
feature as you need to understand how Twig's internals work. |
||||
|
||||
Let's create a simple ``set`` tag that allows the definition of simple |
||||
variables from within a template. The tag can be used like follows: |
||||
|
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.. code-block:: jinja |
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|
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{% set name = "value" %} |
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|
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{{ name }} |
||||
|
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{# should output value #} |
||||
|
||||
.. note:: |
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|
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The ``set`` tag is part of the Core extension and as such is always |
||||
available. The built-in version is slightly more powerful and supports |
||||
multiple assignments by default (cf. the template designers chapter for |
||||
more information). |
||||
|
||||
Three steps are needed to define a new tag: |
||||
|
||||
* Defining a Token Parser class (responsible for parsing the template code); |
||||
|
||||
* Defining a Node class (responsible for converting the parsed code to PHP); |
||||
|
||||
* Registering the tag. |
||||
|
||||
Registering a new tag |
||||
~~~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
Adding a tag is as simple as calling the ``addTokenParser`` method on the |
||||
``Twig_Environment`` instance:: |
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|
||||
$twig = new Twig_Environment($loader); |
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$twig->addTokenParser(new Project_Set_TokenParser()); |
||||
|
||||
Defining a Token Parser |
||||
~~~~~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
Now, let's see the actual code of this class:: |
||||
|
||||
class Project_Set_TokenParser extends Twig_TokenParser |
||||
{ |
||||
public function parse(Twig_Token $token) |
||||
{ |
||||
$lineno = $token->getLine(); |
||||
$name = $this->parser->getStream()->expect(Twig_Token::NAME_TYPE)->getValue(); |
||||
$this->parser->getStream()->expect(Twig_Token::OPERATOR_TYPE, '='); |
||||
$value = $this->parser->getExpressionParser()->parseExpression(); |
||||
|
||||
$this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); |
||||
|
||||
return new Project_Set_Node($name, $value, $lineno, $this->getTag()); |
||||
} |
||||
|
||||
public function getTag() |
||||
{ |
||||
return 'set'; |
||||
} |
||||
} |
||||
|
||||
The ``getTag()`` method must return the tag we want to parse, here ``set``. |
||||
|
||||
The ``parse()`` method is invoked whenever the parser encounters a ``set`` |
||||
tag. It should return a ``Twig_Node`` instance that represents the node (the |
||||
``Project_Set_Node`` calls creating is explained in the next section). |
||||
|
||||
The parsing process is simplified thanks to a bunch of methods you can call |
||||
from the token stream (``$this->parser->getStream()``): |
||||
|
||||
* ``getCurrent()``: Gets the current token in the stream. |
||||
|
||||
* ``next()``: Moves to the next token in the stream, *but returns the old one*. |
||||
|
||||
* ``test($type)``, ``test($value)`` or ``test($type, $value)``: Determines whether |
||||
the current token is of a particular type or value (or both). The value may be an |
||||
array of several possible values. |
||||
|
||||
* ``expect($type[, $value[, $message]])``: If the current token isn't of the given |
||||
type/value a syntax error is thrown. Otherwise, if the type and value are correct, |
||||
the token is returned and the stream moves to the next token. |
||||
|
||||
* ``look()``: Looks a the next token without consuming it. |
||||
|
||||
Parsing expressions is done by calling the ``parseExpression()`` like we did for |
||||
the ``set`` tag. |
||||
|
||||
.. tip:: |
||||
|
||||
Reading the existing ``TokenParser`` classes is the best way to learn all |
||||
the nitty-gritty details of the parsing process. |
||||
|
||||
Defining a Node |
||||
~~~~~~~~~~~~~~~ |
||||
|
||||
The ``Project_Set_Node`` class itself is rather simple:: |
||||
|
||||
class Project_Set_Node extends Twig_Node |
||||
{ |
||||
public function __construct($name, Twig_Node_Expression $value, $lineno, $tag = null) |
||||
{ |
||||
parent::__construct(array('value' => $value), array('name' => $name), $lineno, $tag); |
||||
} |
||||
|
||||
public function compile(Twig_Compiler $compiler) |
||||
{ |
||||
$compiler |
||||
->addDebugInfo($this) |
||||
->write('$context[\''.$this->getAttribute('name').'\'] = ') |
||||
->subcompile($this->getNode('value')) |
||||
->raw(";\n") |
||||
; |
||||
} |
||||
} |
||||
|
||||
The compiler implements a fluid interface and provides methods that helps the |
||||
developer generate beautiful and readable PHP code: |
||||
|
||||
* ``subcompile()``: Compiles a node. |
||||
|
||||
* ``raw()``: Writes the given string as is. |
||||
|
||||
* ``write()``: Writes the given string by adding indentation at the beginning |
||||
of each line. |
||||
|
||||
* ``string()``: Writes a quoted string. |
||||
|
||||
* ``repr()``: Writes a PHP representation of a given value (see |
||||
``Twig_Node_For`` for a usage example). |
||||
|
||||
* ``addDebugInfo()``: Adds the line of the original template file related to |
||||
the current node as a comment. |
||||
|
||||
* ``indent()``: Indents the generated code (see ``Twig_Node_Block`` for a |
||||
usage example). |
||||
|
||||
* ``outdent()``: Outdents the generated code (see ``Twig_Node_Block`` for a |
||||
usage example). |
||||
|
||||
.. _`rot13`: http://www.php.net/manual/en/function.str-rot13.php |
@ -1,479 +0,0 @@ |
||||
Twig for Developers |
||||
=================== |
||||
|
||||
This chapter describes the API to Twig and not the template language. It will |
||||
be most useful as reference to those implementing the template interface to |
||||
the application and not those who are creating Twig templates. |
||||
|
||||
Basics |
||||
------ |
||||
|
||||
Twig uses a central object called the **environment** (of class |
||||
``Twig_Environment``). Instances of this class are used to store the |
||||
configuration and extensions, and are used to load templates from the file |
||||
system or other locations. |
||||
|
||||
Most applications will create one ``Twig_Environment`` object on application |
||||
initialization and use that to load templates. In some cases it's however |
||||
useful to have multiple environments side by side, if different configurations |
||||
are in use. |
||||
|
||||
The simplest way to configure Twig to load templates for your application |
||||
looks roughly like this:: |
||||
|
||||
require_once '/path/to/lib/Twig/Autoloader.php'; |
||||
Twig_Autoloader::register(); |
||||
|
||||
$loader = new Twig_Loader_Filesystem('/path/to/templates'); |
||||
$twig = new Twig_Environment($loader, array( |
||||
'cache' => '/path/to/compilation_cache', |
||||
)); |
||||
|
||||
This will create a template environment with the default settings and a loader |
||||
that looks up the templates in the ``/path/to/templates/`` folder. Different |
||||
loaders are available and you can also write your own if you want to load |
||||
templates from a database or other resources. |
||||
|
||||
.. note:: |
||||
|
||||
Notice that the second argument of the environment is an array of options. |
||||
The ``cache`` option is a compilation cache directory, where Twig caches |
||||
the compiled templates to avoid the parsing phase for sub-sequent |
||||
requests. It is very different from the cache you might want to add for |
||||
the evaluated templates. For such a need, you can use any available PHP |
||||
cache library. |
||||
|
||||
To load a template from this environment you just have to call the |
||||
``loadTemplate()`` method which then returns a ``Twig_Template`` instance:: |
||||
|
||||
$template = $twig->loadTemplate('index.html'); |
||||
|
||||
To render the template with some variables, call the ``render()`` method:: |
||||
|
||||
echo $template->render(array('the' => 'variables', 'go' => 'here')); |
||||
|
||||
.. note:: |
||||
|
||||
The ``display()`` method is a shortcut to output the template directly. |
||||
|
||||
You can also load and render the template in one fell swoop:: |
||||
|
||||
echo $twig->render('index.html', array('the' => 'variables', 'go' => 'here')); |
||||
|
||||
Environment Options |
||||
------------------- |
||||
|
||||
When creating a new ``Twig_Environment`` instance, you can pass an array of |
||||
options as the constructor second argument:: |
||||
|
||||
$twig = new Twig_Environment($loader, array('debug' => true)); |
||||
|
||||
The following options are available: |
||||
|
||||
* ``debug``: When set to ``true``, the generated templates have a |
||||
``__toString()`` method that you can use to display the generated nodes |
||||
(default to ``false``). |
||||
|
||||
* ``charset``: The charset used by the templates (default to ``utf-8``). |
||||
|
||||
* ``base_template_class``: The base template class to use for generated |
||||
templates (default to ``Twig_Template``). |
||||
|
||||
* ``cache``: An absolute path where to store the compiled templates, or |
||||
``false`` to disable caching (which is the default). |
||||
|
||||
* ``auto_reload``: When developing with Twig, it's useful to recompile the |
||||
template whenever the source code changes. If you don't provide a value for |
||||
the ``auto_reload`` option, it will be determined automatically based on the |
||||
``debug`` value. |
||||
|
||||
* ``strict_variables``: If set to ``false``, Twig will silently ignore invalid |
||||
variables (variables and or attributes/methods that do not exist) and |
||||
replace them with a ``null`` value. When set to ``true``, Twig throws an |
||||
exception instead (default to ``false``). |
||||
|
||||
* ``autoescape``: If set to ``true``, auto-escaping will be enabled by default |
||||
for all templates (default to ``true``). |
||||
|
||||
* ``optimizations``: A flag that indicates which optimizations to apply |
||||
(default to ``-1`` -- all optimizations are enabled; set it to ``0`` to |
||||
disable). |
||||
|
||||
Loaders |
||||
------- |
||||
|
||||
Loaders are responsible for loading templates from a resource such as the file |
||||
system. |
||||
|
||||
Compilation Cache |
||||
~~~~~~~~~~~~~~~~~ |
||||
|
||||
All template loaders can cache the compiled templates on the filesystem for |
||||
future reuse. It speeds up Twig a lot as templates are only compiled once; and |
||||
the performance boost is even larger if you use a PHP accelerator such as APC. |
||||
See the ``cache`` and ``auto_reload`` options of ``Twig_Environment`` above |
||||
for more information. |
||||
|
||||
Built-in Loaders |
||||
~~~~~~~~~~~~~~~~ |
||||
|
||||
Here is a list of the built-in loaders Twig provides: |
||||
|
||||
* ``Twig_Loader_Filesystem``: Loads templates from the file system. This |
||||
loader can find templates in folders on the file system and is the preferred |
||||
way to load them:: |
||||
|
||||
$loader = new Twig_Loader_Filesystem($templateDir); |
||||
|
||||
It can also look for templates in an array of directories:: |
||||
|
||||
$loader = new Twig_Loader_Filesystem(array($templateDir1, $templateDir2)); |
||||
|
||||
With such a configuration, Twig will first look for templates in |
||||
``$templateDir1`` and if they do not exist, it will fallback to look for |
||||
them in the ``$templateDir2``. |
||||
|
||||
* ``Twig_Loader_String``: Loads templates from a string. It's a dummy loader |
||||
as you pass it the source code directly:: |
||||
|
||||
$loader = new Twig_Loader_String(); |
||||
|
||||
* ``Twig_Loader_Array``: Loads a template from a PHP array. It's passed an |
||||
array of strings bound to template names. This loader is useful for unit |
||||
testing:: |
||||
|
||||
$loader = new Twig_Loader_Array($templates); |
||||
|
||||
.. tip:: |
||||
|
||||
When using the ``Array`` or ``String`` loaders with a cache mechanism, you |
||||
should know that a new cache key is generated each time a template content |
||||
"changes" (the cache key being the source code of the template). If you |
||||
don't want to see your cache grows out of control, you need to take care |
||||
of clearing the old cache file by yourself. |
||||
|
||||
Create your own Loader |
||||
~~~~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
All loaders implement the ``Twig_LoaderInterface``:: |
||||
|
||||
interface Twig_LoaderInterface |
||||
{ |
||||
/** |
||||
* Gets the source code of a template, given its name. |
||||
* |
||||
* @param string $name string The name of the template to load |
||||
* |
||||
* @return string The template source code |
||||
*/ |
||||
function getSource($name); |
||||
|
||||
/** |
||||
* Gets the cache key to use for the cache for a given template name. |
||||
* |
||||
* @param string $name string The name of the template to load |
||||
* |
||||
* @return string The cache key |
||||
*/ |
||||
function getCacheKey($name); |
||||
|
||||
/** |
||||
* Returns true if the template is still fresh. |
||||
* |
||||
* @param string $name The template name |
||||
* @param timestamp $time The last modification time of the cached template |
||||
*/ |
||||
function isFresh($name, $time); |
||||
} |
||||
|
||||
As an example, here is how the built-in ``Twig_Loader_String`` reads:: |
||||
|
||||
class Twig_Loader_String implements Twig_LoaderInterface |
||||
{ |
||||
public function getSource($name) |
||||
{ |
||||
return $name; |
||||
} |
||||
|
||||
public function getCacheKey($name) |
||||
{ |
||||
return $name; |
||||
} |
||||
|
||||
public function isFresh($name, $time) |
||||
{ |
||||
return false; |
||||
} |
||||
} |
||||
|
||||
The ``isFresh()`` method must return ``true`` if the current cached template |
||||
is still fresh, given the last modification time, or ``false`` otherwise. |
||||
|
||||
Using Extensions |
||||
---------------- |
||||
|
||||
Twig extensions are packages that add new features to Twig. Using an |
||||
extension is as simple as using the ``addExtension()`` method:: |
||||
|
||||
$twig->addExtension(new Twig_Extension_Sandbox()); |
||||
|
||||
Twig comes bundled with the following extensions: |
||||
|
||||
* *Twig_Extension_Core*: Defines all the core features of Twig. |
||||
|
||||
* *Twig_Extension_Escaper*: Adds automatic output-escaping and the possibility |
||||
to escape/unescape blocks of code. |
||||
|
||||
* *Twig_Extension_Sandbox*: Adds a sandbox mode to the default Twig |
||||
environment, making it safe to evaluated untrusted code. |
||||
|
||||
* *Twig_Extension_Optimizer*: Optimizers the node tree before compilation. |
||||
|
||||
The core, escaper, and optimizer extensions do not need to be added to the |
||||
Twig environment, as they are registered by default. You can disable an |
||||
already registered extension:: |
||||
|
||||
$twig->removeExtension('escaper'); |
||||
|
||||
Built-in Extensions |
||||
------------------- |
||||
|
||||
This section describes the features added by the built-in extensions. |
||||
|
||||
.. tip:: |
||||
|
||||
Read the chapter about extending Twig to learn how to create your own |
||||
extensions. |
||||
|
||||
Core Extension |
||||
~~~~~~~~~~~~~~ |
||||
|
||||
The ``core`` extension defines all the core features of Twig: |
||||
|
||||
* Tags: |
||||
|
||||
* ``for`` |
||||
* ``if`` |
||||
* ``extends`` |
||||
* ``include`` |
||||
* ``block`` |
||||
* ``filter`` |
||||
* ``macro`` |
||||
* ``import`` |
||||
* ``from`` |
||||
* ``set`` |
||||
* ``spaceless`` |
||||
|
||||
* Filters: |
||||
|
||||
* ``date`` |
||||
* ``format`` |
||||
* ``replace`` |
||||
* ``url_encode`` |
||||
* ``json_encode`` |
||||
* ``title`` |
||||
* ``capitalize`` |
||||
* ``upper`` |
||||
* ``lower`` |
||||
* ``striptags`` |
||||
* ``join`` |
||||
* ``reverse`` |
||||
* ``length`` |
||||
* ``sort`` |
||||
* ``merge`` |
||||
* ``default`` |
||||
* ``keys`` |
||||
* ``escape`` |
||||
* ``e`` |
||||
|
||||
* Functions: |
||||
|
||||
* ``range`` |
||||
* ``constant`` |
||||
* ``cycle`` |
||||
* ``parent`` |
||||
* ``block`` |
||||
|
||||
* Tests: |
||||
|
||||
* ``even`` |
||||
* ``odd`` |
||||
* ``defined`` |
||||
* ``sameas`` |
||||
* ``null`` |
||||
* ``divisibleby`` |
||||
* ``constant`` |
||||
* ``empty`` |
||||
|
||||
Escaper Extension |
||||
~~~~~~~~~~~~~~~~~ |
||||
|
||||
The ``escaper`` extension adds automatic output escaping to Twig. It defines a |
||||
new tag, ``autoescape``, and a new filter, ``raw``. |
||||
|
||||
When creating the escaper extension, you can switch on or off the global |
||||
output escaping strategy:: |
||||
|
||||
$escaper = new Twig_Extension_Escaper(true); |
||||
$twig->addExtension($escaper); |
||||
|
||||
If set to ``true``, all variables in templates are escaped, except those using |
||||
the ``raw`` filter: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ article.to_html|raw }} |
||||
|
||||
You can also change the escaping mode locally by using the ``autoescape`` tag: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% autoescape true %} |
||||
{{ var }} |
||||
{{ var|raw }} {# var won't be escaped #} |
||||
{{ var|escape }} {# var won't be double-escaped #} |
||||
{% endautoescape %} |
||||
|
||||
.. warning:: |
||||
|
||||
The ``autoescape`` tag has no effect on included files. |
||||
|
||||
The escaping rules are implemented as follows: |
||||
|
||||
* Literals (integers, booleans, arrays, ...) used in the template directly as |
||||
variables or filter arguments are never automatically escaped: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ "Twig<br />" }} {# won't be escaped #} |
||||
|
||||
{% set text = "Twig<br />" %} |
||||
{{ text }} {# will be escaped #} |
||||
|
||||
* Expressions which the result is always a literal or a variable marked safe |
||||
are never automatically escaped: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ foo ? "Twig<br />" : "<br />Twig" }} {# won't be escaped #} |
||||
|
||||
{% set text = "Twig<br />" %} |
||||
{{ foo ? text : "<br />Twig" }} {# will be escaped #} |
||||
|
||||
{% set text = "Twig<br />" %} |
||||
{{ foo ? text|raw : "<br />Twig" }} {# won't be escaped #} |
||||
|
||||
{% set text = "Twig<br />" %} |
||||
{{ foo ? text|escape : "<br />Twig" }} {# the result of the expression won't be escaped #} |
||||
|
||||
* Escaping is applied before printing, after any other filter is applied: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ var|upper }} {# is equivalent to {{ var|upper|escape }} #} |
||||
|
||||
* The `raw` filter should only be used at the end of the filter chain: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ var|raw|upper }} {# will be escaped #} |
||||
|
||||
{{ var|upper|raw }} {# won't be escaped #} |
||||
|
||||
* Automatic escaping is not applied if the last filter in the chain is marked |
||||
safe for the current context (e.g. ``html`` or ``js``). ``escaper`` and |
||||
``escaper('html')`` are marked safe for html, ``escaper('js')`` is marked |
||||
safe for javascript, ``raw`` is marked safe for everything. |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% autoescape true js %} |
||||
{{ var|escape('html') }} {# will be escaped for html and javascript #} |
||||
{{ var }} {# will be escaped for javascript #} |
||||
{{ var|escape('js') }} {# won't be double-escaped #} |
||||
{% endautoescape %} |
||||
|
||||
.. note:: |
||||
|
||||
Note that autoescaping has some limitations as escaping is applied on |
||||
expressions after evaluation. For instance, when working with |
||||
concatenation, ``{{ foo|raw ~ bar }}`` won't give the expected result as |
||||
escaping is applied on the result of the concatenation, not on the |
||||
individual variables (so, the ``raw`` filter won't have any effect here). |
||||
|
||||
Sandbox Extension |
||||
~~~~~~~~~~~~~~~~~ |
||||
|
||||
The ``sandbox`` extension can be used to evaluate untrusted code. Access to |
||||
unsafe attributes and methods is prohibited. The sandbox security is managed |
||||
by a policy instance. By default, Twig comes with one policy class: |
||||
``Twig_Sandbox_SecurityPolicy``. This class allows you to white-list some |
||||
tags, filters, properties, and methods:: |
||||
|
||||
$tags = array('if'); |
||||
$filters = array('upper'); |
||||
$methods = array( |
||||
'Article' => array('getTitle', 'getBody'), |
||||
); |
||||
$properties = array( |
||||
'Article' => array('title', 'body'), |
||||
); |
||||
$functions = array('range'); |
||||
$policy = new Twig_Sandbox_SecurityPolicy($tags, $filters, $methods, $properties, $functions); |
||||
|
||||
With the previous configuration, the security policy will only allow usage of |
||||
the ``if`` tag, and the ``upper`` filter. Moreover, the templates will only be |
||||
able to call the ``getTitle()`` and ``getBody()`` methods on ``Article`` |
||||
objects, and the ``title`` and ``body`` public properties. Everything else |
||||
won't be allowed and will generate a ``Twig_Sandbox_SecurityError`` exception. |
||||
|
||||
The policy object is the first argument of the sandbox constructor:: |
||||
|
||||
$sandbox = new Twig_Extension_Sandbox($policy); |
||||
$twig->addExtension($sandbox); |
||||
|
||||
By default, the sandbox mode is disabled and should be enabled when including |
||||
untrusted template code by using the ``sandbox`` tag: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% sandbox %} |
||||
{% include 'user.html' %} |
||||
{% endsandbox %} |
||||
|
||||
You can sandbox all templates by passing ``true`` as the second argument of |
||||
the extension constructor:: |
||||
|
||||
$sandbox = new Twig_Extension_Sandbox($policy, true); |
||||
|
||||
Optimizer Extension |
||||
~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
The ``optimizer`` extension optimizes the node tree before compilation:: |
||||
|
||||
$twig->addExtension(new Twig_Extension_Optimizer()); |
||||
|
||||
By default, all optimizations are turned on. You can select the ones you want |
||||
to enable by passing them to the constructor:: |
||||
|
||||
$optimizer = new Twig_Extension_Optimizer(Twig_NodeVisitor_Optimizer::OPTIMIZE_FOR); |
||||
|
||||
$twig->addExtension($optimizer); |
||||
|
||||
Exceptions |
||||
---------- |
||||
|
||||
Twig can throw exceptions: |
||||
|
||||
* ``Twig_Error``: The base exception for all errors. |
||||
|
||||
* ``Twig_Error_Syntax``: Thrown to tell the user that there is a problem with |
||||
the template syntax. |
||||
|
||||
* ``Twig_Error_Runtime``: Thrown when an error occurs at runtime (when a filter |
||||
does not exist for instance). |
||||
|
||||
* ``Twig_Error_Loader``: Thrown when an error occurs during template loading. |
||||
|
||||
* ``Twig_Sandbox_SecurityError``: Thrown when an unallowed tag, filter, or |
||||
method is called in a sandboxed template. |
@ -1,101 +0,0 @@ |
||||
Coding Standards |
||||
================ |
||||
|
||||
When writing Twig templates, we recommend you to follow these official coding |
||||
standards: |
||||
|
||||
* Put one (and only one) space after the start of a delimiter (``{{``, ``{%``, |
||||
and ``{#``) and before the end of a delimiter (``}}``, ``%}``, and ``#}``): |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ foo }} |
||||
{# comment #} |
||||
{% if foo %}{% endif %} |
||||
|
||||
When using the whitespace control character, do not put any spaces between |
||||
it and the delimiter: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{- foo -}} |
||||
{#- comment -#} |
||||
{%- if foo -%}{%- endif -%} |
||||
|
||||
* Put one (and only one) space before and after the following operators: |
||||
comparison operators (``==``, ``!=``, ``<``, ``>``, ``>=``, ``<=``), math |
||||
operators (``+``, ``-``, ``/``, ``*``, ``%``, ``//``, ``**``), logic |
||||
operators (``not``, ``and``, ``or``), ``~``, ``is``, ``in``, and the ternary |
||||
operator (``?:``): |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ 1 + 2 }} |
||||
{{ foo ~ bar }} |
||||
{{ true ? true : false }} |
||||
|
||||
* Put one (and only one) space after the ``:`` sign in hashes and ``,`` in |
||||
arrays and hashes: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ [1, 2, 3] }} |
||||
{{ {'foo': 'bar'} }} |
||||
|
||||
* Do not put any spaces after an opening parenthesis and before a closing |
||||
parenthesis in expressions: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ 1 + (2 * 3) }} |
||||
|
||||
* Do not put any spaces before and after string delimiters: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ 'foo' }} |
||||
{{ "foo" }} |
||||
|
||||
* Do not put any spaces before and after the following operators: ``|``, |
||||
``.``, ``..``, ``[]``: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ foo|upper|lower }} |
||||
{{ user.name }} |
||||
{{ user[name] }} |
||||
{% for i in 1..12 %}{% endfor %} |
||||
|
||||
* Do not put any spaces before and after the parenthesis used for filter and |
||||
function calls: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ foo|default('foo') }} |
||||
{{ range(1..10) }} |
||||
|
||||
* Do not put any spaces before and after the opening and the closing of arrays |
||||
and hashes: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ [1, 2, 3] }} |
||||
{{ {'foo': 'bar'} }} |
||||
|
||||
* Use lower cased and underscored variable names: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% set foo = 'foo' %} |
||||
{% set foo_bar = 'foo' %} |
||||
|
||||
* Indent your code inside tags (use the same indentation as the one used for |
||||
the main language of the file): |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% block foo %} |
||||
{% if true %} |
||||
true |
||||
{% endif %} |
||||
{% endblock %} |
@ -1,328 +0,0 @@ |
||||
Creating a Twig Extension |
||||
========================= |
||||
|
||||
The main motivation for writing an extension is to move often used code into a |
||||
reusable class like adding support for internationalization. An extension can |
||||
define tags, filters, tests, operators, global variables, functions, and node |
||||
visitors. |
||||
|
||||
Creating an extension also makes for a better separation of code that is |
||||
executed at compilation time and code needed at runtime. As such, it makes |
||||
your code faster. |
||||
|
||||
Most of the time, it is useful to create a single extension for your project, |
||||
to host all the specific tags and filters you want to add to Twig. |
||||
|
||||
.. note:: |
||||
|
||||
Before writing your own extensions, have a look at the Twig official |
||||
extension repository: http://github.com/fabpot/Twig-extensions. |
||||
|
||||
An extension is a class that implements the following interface:: |
||||
|
||||
interface Twig_ExtensionInterface |
||||
{ |
||||
/** |
||||
* Initializes the runtime environment. |
||||
* |
||||
* This is where you can load some file that contains filter functions for instance. |
||||
* |
||||
* @param Twig_Environment $environment The current Twig_Environment instance |
||||
*/ |
||||
function initRuntime(Twig_Environment $environment); |
||||
|
||||
/** |
||||
* Returns the token parser instances to add to the existing list. |
||||
* |
||||
* @return array An array of Twig_TokenParserInterface or Twig_TokenParserBrokerInterface instances |
||||
*/ |
||||
function getTokenParsers(); |
||||
|
||||
/** |
||||
* Returns the node visitor instances to add to the existing list. |
||||
* |
||||
* @return array An array of Twig_NodeVisitorInterface instances |
||||
*/ |
||||
function getNodeVisitors(); |
||||
|
||||
/** |
||||
* Returns a list of filters to add to the existing list. |
||||
* |
||||
* @return array An array of filters |
||||
*/ |
||||
function getFilters(); |
||||
|
||||
/** |
||||
* Returns a list of tests to add to the existing list. |
||||
* |
||||
* @return array An array of tests |
||||
*/ |
||||
function getTests(); |
||||
|
||||
/** |
||||
* Returns a list of functions to add to the existing list. |
||||
* |
||||
* @return array An array of functions |
||||
*/ |
||||
function getFunctions(); |
||||
|
||||
/** |
||||
* Returns a list of operators to add to the existing list. |
||||
* |
||||
* @return array An array of operators |
||||
*/ |
||||
function getOperators(); |
||||
|
||||
/** |
||||
* Returns a list of global variables to add to the existing list. |
||||
* |
||||
* @return array An array of global variables |
||||
*/ |
||||
function getGlobals(); |
||||
|
||||
/** |
||||
* Returns the name of the extension. |
||||
* |
||||
* @return string The extension name |
||||
*/ |
||||
function getName(); |
||||
} |
||||
|
||||
To keep your extension class clean and lean, it can inherit from the built-in |
||||
``Twig_Extension`` class instead of implementing the whole interface. That |
||||
way, you just need to implement the ``getName()`` method as the |
||||
``Twig_Extension`` provides empty implementations for all other methods. |
||||
|
||||
The ``getName()`` method must return a unique identifier for your extension. |
||||
|
||||
Now, with this information in mind, let's create the most basic extension |
||||
possible:: |
||||
|
||||
class Project_Twig_Extension extends Twig_Extension |
||||
{ |
||||
public function getName() |
||||
{ |
||||
return 'project'; |
||||
} |
||||
} |
||||
|
||||
.. note:: |
||||
|
||||
Of course, this extension does nothing for now. We will customize it in |
||||
the next sections. |
||||
|
||||
Twig does not care where you save your extension on the filesystem, as all |
||||
extensions must be registered explicitly to be available in your templates. |
||||
|
||||
You can register an extension by using the ``addExtension()`` method on your |
||||
main ``Environment`` object:: |
||||
|
||||
$twig = new Twig_Environment($loader); |
||||
$twig->addExtension(new Project_Twig_Extension()); |
||||
|
||||
Of course, you need to first load the extension file by either using |
||||
``require_once()`` or by using an autoloader (see `spl_autoload_register()`_). |
||||
|
||||
.. tip:: |
||||
|
||||
The bundled extensions are great examples of how extensions work. |
||||
|
||||
Globals |
||||
------- |
||||
|
||||
Global variables can be registered in an extension via the ``getGlobals()`` |
||||
method:: |
||||
|
||||
class Project_Twig_Extension extends Twig_Extension |
||||
{ |
||||
public function getGlobals() |
||||
{ |
||||
return array( |
||||
'text' => new Text(), |
||||
); |
||||
} |
||||
|
||||
// ... |
||||
} |
||||
|
||||
Functions |
||||
--------- |
||||
|
||||
Functions can be registered in an extension via the ``getFunctions()`` |
||||
method:: |
||||
|
||||
class Project_Twig_Extension extends Twig_Extension |
||||
{ |
||||
public function getFunctions() |
||||
{ |
||||
return array( |
||||
'lipsum' => new Twig_Function_Function('generate_lipsum'), |
||||
); |
||||
} |
||||
|
||||
// ... |
||||
} |
||||
|
||||
Filters |
||||
------- |
||||
|
||||
To add a filter to an extension, you need to override the ``getFilters()`` |
||||
method. This method must return an array of filters to add to the Twig |
||||
environment:: |
||||
|
||||
class Project_Twig_Extension extends Twig_Extension |
||||
{ |
||||
public function getFilters() |
||||
{ |
||||
return array( |
||||
'rot13' => new Twig_Filter_Function('str_rot13'), |
||||
); |
||||
} |
||||
|
||||
// ... |
||||
} |
||||
|
||||
As you can see in the above code, the ``getFilters()`` method returns an array |
||||
where keys are the name of the filters (``rot13``) and the values the |
||||
definition of the filter (``new Twig_Filter_Function('str_rot13')``). |
||||
|
||||
As seen in the previous chapter, you can also define filters as static methods |
||||
on the extension class:: |
||||
|
||||
$twig->addFilter('rot13', new Twig_Filter_Function('Project_Twig_Extension::rot13Filter')); |
||||
|
||||
You can also use ``Twig_Filter_Method`` instead of ``Twig_Filter_Function`` |
||||
when defining a filter to use a method:: |
||||
|
||||
class Project_Twig_Extension extends Twig_Extension |
||||
{ |
||||
public function getFilters() |
||||
{ |
||||
return array( |
||||
'rot13' => new Twig_Filter_Method($this, 'rot13Filter'), |
||||
); |
||||
} |
||||
|
||||
public function rot13Filter($string) |
||||
{ |
||||
return str_rot13($string); |
||||
} |
||||
|
||||
// ... |
||||
} |
||||
|
||||
The first argument of the ``Twig_Filter_Method`` constructor is always |
||||
``$this``, the current extension object. The second one is the name of the |
||||
method to call. |
||||
|
||||
Using methods for filters is a great way to package your filter without |
||||
polluting the global namespace. This also gives the developer more flexibility |
||||
at the cost of a small overhead. |
||||
|
||||
Overriding default Filters |
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
If some default core filters do not suit your needs, you can easily override |
||||
them by creating your own core extension. Of course, you don't need to copy |
||||
and paste the whole core extension code of Twig. Instead, you can just extends |
||||
it and override the filter(s) you want by overriding the ``getFilters()`` |
||||
method:: |
||||
|
||||
class MyCoreExtension extends Twig_Extension_Core |
||||
{ |
||||
public function getFilters() |
||||
{ |
||||
return array_merge(parent::getFilters(), array( |
||||
'date' => new Twig_Filter_Method($this, 'dateFilter'), |
||||
// ... |
||||
)); |
||||
} |
||||
|
||||
public function dateFilter($timestamp, $format = 'F j, Y H:i') |
||||
{ |
||||
return '...'.twig_date_format_filter($timestamp, $format); |
||||
} |
||||
|
||||
// ... |
||||
} |
||||
|
||||
Here, we override the ``date`` filter with a custom one. Using this new core |
||||
extension is as simple as registering the ``MyCoreExtension`` extension by |
||||
calling the ``addExtension()`` method on the environment instance:: |
||||
|
||||
$twig = new Twig_Environment($loader); |
||||
$twig->addExtension(new MyCoreExtension()); |
||||
|
||||
But I can already hear some people wondering how it can work as the Core |
||||
extension is loaded by default. That's true, but the trick is that both |
||||
extensions share the same unique identifier (``core`` - defined in the |
||||
``getName()`` method). By registering an extension with the same name as an |
||||
existing one, you have actually overridden the default one, even if it is |
||||
already registered:: |
||||
|
||||
$twig->addExtension(new Twig_Extension_Core()); |
||||
$twig->addExtension(new MyCoreExtension()); |
||||
|
||||
Tags |
||||
---- |
||||
|
||||
Adding a tag in an extension can be done by overriding the |
||||
``getTokenParsers()`` method. This method must return an array of tags to add |
||||
to the Twig environment:: |
||||
|
||||
class Project_Twig_Extension extends Twig_Extension |
||||
{ |
||||
public function getTokenParsers() |
||||
{ |
||||
return array(new Project_Set_TokenParser()); |
||||
} |
||||
|
||||
// ... |
||||
} |
||||
|
||||
In the above code, we have added a single new tag, defined by the |
||||
``Project_Set_TokenParser`` class. The ``Project_Set_TokenParser`` class is |
||||
responsible for parsing the tag and compiling it to PHP. |
||||
|
||||
Operators |
||||
--------- |
||||
|
||||
The ``getOperators()`` methods allows to add new operators. Here is how to add |
||||
``!``, ``||``, and ``&&`` operators:: |
||||
|
||||
class Project_Twig_Extension extends Twig_Extension |
||||
{ |
||||
public function getOperators() |
||||
{ |
||||
return array( |
||||
array( |
||||
'!' => array('precedence' => 50, 'class' => 'Twig_Node_Expression_Unary_Not'), |
||||
), |
||||
array( |
||||
'||' => array('precedence' => 10, 'class' => 'Twig_Node_Expression_Binary_Or', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT), |
||||
'&&' => array('precedence' => 15, 'class' => 'Twig_Node_Expression_Binary_And', 'associativity' => Twig_ExpressionParser::OPERATOR_LEFT), |
||||
), |
||||
); |
||||
} |
||||
|
||||
// ... |
||||
} |
||||
|
||||
Tests |
||||
----- |
||||
|
||||
The ``getTests()`` methods allows to add new test functions:: |
||||
|
||||
class Project_Twig_Extension extends Twig_Extension |
||||
{ |
||||
public function getTests() |
||||
{ |
||||
return array( |
||||
'even' => new Twig_Test_Function('twig_test_even'), |
||||
); |
||||
} |
||||
|
||||
// ... |
||||
} |
||||
|
||||
.. _`spl_autoload_register()`: http://www.php.net/spl_autoload_register |
@ -1,11 +0,0 @@ |
||||
``capitalize`` |
||||
============== |
||||
|
||||
The ``capitalize`` filter capitalizes a value. The first character will be |
||||
uppercase, all others lowercase: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ 'my first car'|capitalize }} |
||||
|
||||
{# outputs 'My first car' #} |
@ -1,22 +0,0 @@ |
||||
``convert_encoding`` |
||||
==================== |
||||
|
||||
.. versionadded:: 1.4 |
||||
The ``convert_encoding`` filter was added in Twig 1.4. |
||||
|
||||
The ``convert_encoding`` filter converts a string from one encoding to |
||||
another. The first argument is the expected output charset and the second one |
||||
is the input charset: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ data|convert_encoding('UTF-8', 'iso-2022-jp') }} |
||||
|
||||
.. note:: |
||||
|
||||
This filter relies on the `iconv`_ or `mbstring`_ extension, so one of |
||||
them must be installed. In case both are installed, `iconv`_ is used |
||||
by default. |
||||
|
||||
.. _`iconv`: http://php.net/iconv |
||||
.. _`mbstring`: http://php.net/mbstring |
@ -1,65 +0,0 @@ |
||||
``date`` |
||||
======== |
||||
|
||||
.. versionadded:: 1.1 |
||||
The timezone support has been added in Twig 1.1. |
||||
|
||||
.. versionadded:: 1.5 |
||||
The default date format support has been added in Twig 1.5. |
||||
|
||||
.. versionadded:: 1.6.1 |
||||
The default timezone support has been added in Twig 1.6.1. |
||||
|
||||
The ``date`` filter formats a date to a given format: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ post.published_at|date("m/d/Y") }} |
||||
|
||||
The ``date`` filter accepts strings (it must be in a format supported by the |
||||
`date`_ function), `DateTime`_ instances, or `DateInterval`_ instances. For |
||||
instance, to display the current date, filter the word "now": |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ "now"|date("m/d/Y") }} |
||||
|
||||
To escape words and characters in the date format use ``\\`` in front of each character: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ post.published_at|date("F jS \\a\\t g:ia") }} |
||||
|
||||
You can also specify a timezone: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ post.published_at|date("m/d/Y", "Europe/Paris") }} |
||||
|
||||
If no format is provided, Twig will use the default one: ``F j, Y H:i``. This |
||||
default can be easily changed by calling the ``setDateFormat()`` method on the |
||||
``core`` extension instance. The first argument is the default format for |
||||
dates and the second one is the default format for date intervals: |
||||
|
||||
.. code-block:: php |
||||
|
||||
$twig = new Twig_Environment($loader); |
||||
$twig->getExtension('core')->setDateFormat('d/m/Y', '%d days'); |
||||
|
||||
The default timezone can also be set globally by calling ``setTimezone()``: |
||||
|
||||
.. code-block:: php |
||||
|
||||
$twig = new Twig_Environment($loader); |
||||
$twig->getExtension('core')->setTimezone('Europe/Paris'); |
||||
|
||||
.. _`date`: http://www.php.net/date |
||||
.. _`DateTime`: http://www.php.net/DateTime |
||||
.. _`DateInterval`: http://www.php.net/DateInterval |
||||
|
||||
If the value passed to the ``date`` filter is null, it will return the current date by default. |
||||
If an empty string is desired instead of the current date, use a ternary operator: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ post.published_at is empty ? "" : post.published_at|date("m/d/Y") }} |
@ -1,28 +0,0 @@ |
||||
``default`` |
||||
=========== |
||||
|
||||
The ``default`` filter returns the passed default value if the value is |
||||
undefined or empty, otherwise the value of the variable: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ var|default('var is not defined') }} |
||||
|
||||
{{ var.foo|default('foo item on var is not defined') }} |
||||
|
||||
{{ var['foo']|default('foo item on var is not defined') }} |
||||
|
||||
{{ ''|default('passed var is empty') }} |
||||
|
||||
When using the ``default`` filter on an expression that uses variables in some |
||||
method calls, be sure to use the ``default`` filter whenever a variable can be |
||||
undefined: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ var.method(foo|default('foo'))|default('foo') }} |
||||
|
||||
.. note:: |
||||
|
||||
Read the documentation for the :doc:`defined<../tests/defined>` and |
||||
:doc:`empty<../tests/empty>` tests to learn more about their semantics. |
@ -1,30 +0,0 @@ |
||||
``escape`` |
||||
========== |
||||
|
||||
The ``escape`` filter converts the characters ``&``, ``<``, ``>``, ``'``, and |
||||
``"`` in strings to HTML-safe sequences. Use this if you need to display text |
||||
that might contain such characters in HTML: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ user.username|escape }} |
||||
|
||||
For convenience, the ``e`` filter is defined as an alias: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ user.username|e }} |
||||
|
||||
The ``escape`` filter can also be used in another context than HTML; for |
||||
instance, to escape variables included in a JavaScript: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ user.username|escape('js') }} |
||||
{{ user.username|e('js') }} |
||||
|
||||
.. note:: |
||||
|
||||
Internally, ``escape`` uses the PHP native `htmlspecialchars`_ function. |
||||
|
||||
.. _`htmlspecialchars`: http://php.net/htmlspecialchars |
@ -1,16 +0,0 @@ |
||||
``format`` |
||||
========== |
||||
|
||||
The ``format`` filter formats a given string by replacing the placeholders |
||||
(placeholders follows the `printf`_ notation): |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ "I like %s and %s."|format(foo, "bar") }} |
||||
|
||||
{# returns I like foo and bar |
||||
if the foo parameter equals to the foo string. #} |
||||
|
||||
.. _`printf`: http://www.php.net/printf |
||||
|
||||
.. seealso:: :doc:`replace<replace>` |
@ -1,29 +0,0 @@ |
||||
Filters |
||||
======= |
||||
|
||||
.. toctree:: |
||||
:maxdepth: 1 |
||||
|
||||
date |
||||
format |
||||
replace |
||||
number_format |
||||
url_encode |
||||
json_encode |
||||
convert_encoding |
||||
title |
||||
capitalize |
||||
nl2br |
||||
upper |
||||
lower |
||||
striptags |
||||
join |
||||
reverse |
||||
length |
||||
sort |
||||
default |
||||
keys |
||||
escape |
||||
raw |
||||
merge |
||||
slice |
@ -1,18 +0,0 @@ |
||||
``join`` |
||||
======== |
||||
|
||||
The ``join`` filter returns a string which is the concatenation of the items |
||||
of a sequence: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ [1, 2, 3]|join }} |
||||
{# returns 123 #} |
||||
|
||||
The separator between elements is an empty string per default, but you can |
||||
define it with the optional first parameter: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ [1, 2, 3]|join('|') }} |
||||
{# returns 1|2|3 #} |
@ -1,14 +0,0 @@ |
||||
``json_encode`` |
||||
=============== |
||||
|
||||
The ``json_encode`` filter returns the JSON representation of a string: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ data|json_encode() }} |
||||
|
||||
.. note:: |
||||
|
||||
Internally, Twig uses the PHP `json_encode`_ function. |
||||
|
||||
.. _`json_encode`: http://php.net/json_encode |
@ -1,11 +0,0 @@ |
||||
``keys`` |
||||
======== |
||||
|
||||
The ``keys`` filter returns the keys of an array. It is useful when you want to |
||||
iterate over the keys of an array: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for key in array|keys %} |
||||
... |
||||
{% endfor %} |
@ -1,12 +0,0 @@ |
||||
``length`` |
||||
========== |
||||
|
||||
The ``length`` filters returns the number of items of a sequence or mapping, or |
||||
the length of a string: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if users|length > 10 %} |
||||
... |
||||
{% endif %} |
||||
|
@ -1,10 +0,0 @@ |
||||
``lower`` |
||||
========= |
||||
|
||||
The ``lower`` filter converts a value to lowercase: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ 'WELCOME'|lower }} |
||||
|
||||
{# outputs 'welcome' #} |
@ -1,41 +0,0 @@ |
||||
``merge`` |
||||
========= |
||||
|
||||
The ``merge`` filter merges an array with the another array: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% set values = [1, 2] %} |
||||
|
||||
{% set values = values|merge(['apple', 'orange']) %} |
||||
|
||||
{# values now contains [1, 2, 'apple', 'orange'] #} |
||||
|
||||
New values are added at the end of the existing ones. |
||||
|
||||
The ``merge`` filter also works on hashes: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% set items = { 'apple': 'fruit', 'orange': 'fruit', 'peugeot': 'unknown' } %} |
||||
|
||||
{% set items = items|merge({ 'peugeot': 'car', 'renault': 'car' }) %} |
||||
|
||||
{# items now contains { 'apple': 'fruit', 'orange': 'fruit', 'peugeot': 'car', 'renault': 'car' } #} |
||||
|
||||
For hashes, the merging process occurs on the keys: if the key does not |
||||
already exist, it is added but if the key already exists, its value is |
||||
overridden. |
||||
|
||||
.. tip:: |
||||
|
||||
If you want to ensure that some values are defined in an array (by given |
||||
default values), reverse the two elements in the call: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% set items = { 'apple': 'fruit', 'orange': 'fruit' } %} |
||||
|
||||
{% set items = { 'apple': 'unknown' }|merge(items) %} |
||||
|
||||
{# items now contains { 'apple': 'fruit', 'orange': 'fruit' } #} |
@ -1,22 +0,0 @@ |
||||
``nl2br`` |
||||
========= |
||||
|
||||
.. versionadded:: 1.5 |
||||
The nl2br filter was added in Twig 1.5. |
||||
|
||||
The ``nl2br`` filter inserts HTML line breaks before all newlines in a string: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ "I like Twig.\nYou will like it too."|nl2br }} |
||||
{# outputs |
||||
|
||||
I like Twig.<br /> |
||||
You will like it too. |
||||
|
||||
#} |
||||
|
||||
.. note:: |
||||
|
||||
The ``nl2br`` filter pre-escapes the input before applying the |
||||
transformation. |
@ -1,38 +0,0 @@ |
||||
``number_format`` |
||||
================= |
||||
|
||||
.. versionadded:: 1.5 |
||||
The number_format filter was added in Twig 1.5 |
||||
|
||||
The ``number_format`` filter formats numbers. It is a wrapper around PHP's |
||||
`number_format`_ function: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ 200.35|number_format }} |
||||
|
||||
You can control the number of decimal places, decimal point, and thousands |
||||
separator using the additional arguments: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ 9800.333|number_format(2, ',', '.') }} |
||||
|
||||
If no formatting options are provided then Twig will use the default formatting |
||||
options of: |
||||
|
||||
- 0 decimal places. |
||||
- ``.`` as the decimal point. |
||||
- ``,`` as the thousands separator. |
||||
|
||||
These defaults can be easily changed through the core extension: |
||||
|
||||
.. code-block:: php |
||||
|
||||
$twig = new Twig_Environment($loader); |
||||
$twig->getExtension('core')->setNumberFormat(3, ',', '.'); |
||||
|
||||
The defaults set for ``number_format`` can be over-ridden upon each call using the |
||||
additional parameters. |
||||
|
||||
.. _`number_format`: http://php.net/number_format |
@ -1,12 +0,0 @@ |
||||
``raw`` |
||||
======= |
||||
|
||||
The ``raw`` filter marks the value as being "safe", which means that in an |
||||
environment with automatic escaping enabled this variable will not be escaped |
||||
if ``raw`` is the last filter applied to it: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% autoescape true %} |
||||
{{ var|raw }} {# var won't be escaped #} |
||||
{% endautoescape %} |
@ -1,14 +0,0 @@ |
||||
``replace`` |
||||
=========== |
||||
|
||||
The ``replace`` filter formats a given string by replacing the placeholders |
||||
(placeholders are free-form): |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ "I like %this% and %that%."|replace({'%this%': foo, '%that%': "bar"}) }} |
||||
|
||||
{# returns I like foo and bar |
||||
if the foo parameter equals to the foo string. #} |
||||
|
||||
.. seealso:: :doc:`format<format>` |
@ -1,23 +0,0 @@ |
||||
``reverse`` |
||||
=========== |
||||
|
||||
.. versionadded:: 1.6 |
||||
Support for strings has been added in Twig 1.6. |
||||
|
||||
The ``reverse`` filter reverses a sequence, a mapping, or a string: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for use in users|reverse %} |
||||
... |
||||
{% endfor %} |
||||
|
||||
{{ '1234'|reverse }} |
||||
|
||||
{# outputs 4321 #} |
||||
|
||||
.. note:: |
||||
|
||||
It also works with objects implementing the `Traversable`_ interface. |
||||
|
||||
.. _`Traversable`: http://php.net/Traversable |
@ -1,57 +0,0 @@ |
||||
``slice`` |
||||
=========== |
||||
|
||||
.. versionadded:: 1.6 |
||||
The slice filter was added in Twig 1.6. |
||||
|
||||
The ``slice`` filter extracts a slice of a sequence, a mapping, or a string: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for i in [1, 2, 3, 4]|slice(1, 2) %} |
||||
{# will iterate over 2 and 3 #} |
||||
{% endfor %} |
||||
|
||||
{{ '1234'|slice(1, 2) }} |
||||
|
||||
{# outputs 23 #} |
||||
|
||||
You can use any valid expression for both the start and the length: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for i in [1, 2, 3, 4]|slice(start, length) %} |
||||
{# ... #} |
||||
{% endfor %} |
||||
|
||||
As syntactic sugar, you can also use the ``[]`` notation: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for i in [1, 2, 3, 4][start:length] %} |
||||
{# ... #} |
||||
{% endfor %} |
||||
|
||||
{{ '1234'[1:2] }} |
||||
|
||||
The ``slice`` filter works as the `array_slice`_ PHP function for arrays and |
||||
`substr`_ for strings. |
||||
|
||||
If the start is non-negative, the sequence will start at that start in the |
||||
variable. If start is negative, the sequence will start that far from the end |
||||
of the variable. |
||||
|
||||
If length is given and is positive, then the sequence will have up to that |
||||
many elements in it. If the variable is shorter than the length, then only the |
||||
available variable elements will be present. If length is given and is |
||||
negative then the sequence will stop that many elements from the end of the |
||||
variable. If it is omitted, then the sequence will have everything from offset |
||||
up until the end of the variable. |
||||
|
||||
.. note:: |
||||
|
||||
It also works with objects implementing the `Traversable`_ interface. |
||||
|
||||
.. _`Traversable`: http://php.net/manual/en/class.traversable.php |
||||
.. _`array_slice`: http://php.net/array_slice |
||||
.. _`substr`: http://php.net/substr |
@ -1,17 +0,0 @@ |
||||
``sort`` |
||||
======== |
||||
|
||||
The ``sort`` filter sorts an array: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for use in users|sort %} |
||||
... |
||||
{% endfor %} |
||||
|
||||
.. note:: |
||||
|
||||
Internally, Twig uses the PHP `asort`_ function to maintain index |
||||
association. |
||||
|
||||
.. _`asort`: http://php.net/asort |
@ -1,15 +0,0 @@ |
||||
``striptags`` |
||||
============= |
||||
|
||||
The ``striptags`` filter strips SGML/XML tags and replace adjacent whitespace |
||||
by one space: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% some_html|striptags %} |
||||
|
||||
.. note:: |
||||
|
||||
Internally, Twig uses the PHP `strip_tags`_ function. |
||||
|
||||
.. _`strip_tags`: http://php.net/strip_tags |
@ -1,11 +0,0 @@ |
||||
``title`` |
||||
========= |
||||
|
||||
The ``title`` filter returns a titlecased version of the value. Words will |
||||
start with uppercase letters, all remaining characters are lowercase: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ 'my first car'|title }} |
||||
|
||||
{# outputs 'My First Car' #} |
@ -1,24 +0,0 @@ |
||||
``trim`` |
||||
======== |
||||
|
||||
.. versionadded:: 1.6.2 |
||||
The trim filter was added in Twig 1.6.2. |
||||
|
||||
The ``trim`` filter strips whitespace (or other characters) from the beginning |
||||
and end of a string: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ ' I like Twig. '|trim }} |
||||
|
||||
{# outputs 'I like Twig.' #} |
||||
|
||||
{{ ' I like Twig.'|trim('.') }} |
||||
|
||||
{# outputs ' I like Twig' #} |
||||
|
||||
.. note:: |
||||
|
||||
Internally, Twig uses the PHP `trim`_ function. |
||||
|
||||
.. _`trim`: http://php.net/trim |
@ -1,10 +0,0 @@ |
||||
``upper`` |
||||
========= |
||||
|
||||
The ``upper`` filter converts a value to uppercase: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ 'welcome'|upper }} |
||||
|
||||
{# outputs 'WELCOME' #} |
@ -1,14 +0,0 @@ |
||||
``url_encode`` |
||||
============== |
||||
|
||||
The ``url_encode`` filter URL encodes a given string: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ data|url_encode() }} |
||||
|
||||
.. note:: |
||||
|
||||
Internally, Twig uses the PHP `urlencode`_ function. |
||||
|
||||
.. _`urlencode`: http://php.net/urlencode |
@ -1,18 +0,0 @@ |
||||
``attribute`` |
||||
============= |
||||
|
||||
.. versionadded:: 1.2 |
||||
The ``attribute`` function was added in Twig 1.2. |
||||
|
||||
``attribute`` can be used to access a "dynamic" attribute of a variable: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ attribute(object, method) }} |
||||
{{ attribute(object, method, arguments) }} |
||||
{{ attribute(array, item) }} |
||||
|
||||
.. note:: |
||||
|
||||
The resolution algorithm is the same as the one used for the ``.`` |
||||
notation, except that the item can be any valid expression. |
@ -1,15 +0,0 @@ |
||||
``block`` |
||||
========= |
||||
|
||||
When a template uses inheritance and if you want to print a block multiple |
||||
times, use the ``block`` function: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
<title>{% block title %}{% endblock %}</title> |
||||
|
||||
<h1>{{ block('title') }}</h1> |
||||
|
||||
{% block body %}{% endblock %} |
||||
|
||||
.. seealso:: :doc:`extends<../tags/extends>`, :doc:`parent<../functions/parent>` |
@ -1,9 +0,0 @@ |
||||
``constant`` |
||||
============ |
||||
|
||||
``constant`` returns the constant value for a given string: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ some_date|date(constant('DATE_W3C')) }} |
||||
{{ constant('Namespace\\Classname::CONSTANT_NAME') }} |
@ -1,20 +0,0 @@ |
||||
``cycle`` |
||||
========= |
||||
|
||||
The ``cycle`` function cycles on an array of values: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for i in 0..10 %} |
||||
{{ cycle(['odd', 'even'], i) }} |
||||
{% endfor %} |
||||
|
||||
The array can contain any number of values: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% set fruits = ['apple', 'orange', 'citrus'] %} |
||||
|
||||
{% for i in 0..10 %} |
||||
{{ cycle(fruits, i) }} |
||||
{% endfor %} |
@ -1,46 +0,0 @@ |
||||
``date`` |
||||
======== |
||||
|
||||
.. versionadded:: 1.6 |
||||
The date function has been added in Twig 1.6. |
||||
|
||||
.. versionadded:: 1.6.1 |
||||
The default timezone support has been added in Twig 1.6.1. |
||||
|
||||
Converts an argument to a date to allow date comparison: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if date(user.created_at) < date('+2days') %} |
||||
{# do something #} |
||||
{% endif %} |
||||
|
||||
The argument must be in a format supported by the `date`_ function. |
||||
|
||||
You can pass a timezone as the second argument: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if date(user.created_at) < date('+2days', 'Europe/Paris') %} |
||||
{# do something #} |
||||
{% endif %} |
||||
|
||||
If no argument is passed, the function returns the current date: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if date(user.created_at) < date() %} |
||||
{# always! #} |
||||
{% endif %} |
||||
|
||||
.. note:: |
||||
|
||||
You can set the default timezone globally by calling ``setTimezone()`` on |
||||
the ``core`` extension instance: |
||||
|
||||
.. code-block:: php |
||||
|
||||
$twig = new Twig_Environment($loader); |
||||
$twig->getExtension('core')->setTimezone('Europe/Paris'); |
||||
|
||||
.. _`date`: http://www.php.net/date |
@ -1,58 +0,0 @@ |
||||
``dump`` |
||||
======== |
||||
|
||||
.. versionadded:: 1.5 |
||||
The dump function was added in Twig 1.5. |
||||
|
||||
The ``dump`` function dumps information about a template variable. This is |
||||
mostly useful to debug a template that does not behave as expected by |
||||
introspecting its variables: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ dump(user) }} |
||||
|
||||
.. note:: |
||||
|
||||
The ``debug`` function is not available by default. You must load it explicitly:: |
||||
|
||||
$twig = new Twig_Environment($loader, $config); |
||||
$twig->addExtension(new Twig_Extension_Debug()); |
||||
|
||||
Even when loaded explicitly, it won't do anything if the ``debug`` option |
||||
is not enabled. |
||||
|
||||
In an HTML context, wrap the output with a ``pre`` tag to make it easier to |
||||
read: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
<pre> |
||||
{{ dump(user) }} |
||||
</pre> |
||||
|
||||
.. tip:: |
||||
|
||||
Using a ``pre`` tag is not needed when `XDebug`_ is enabled and |
||||
``html_errors`` is ``on``; as a bonus, the output is also nicer with |
||||
XDebug enabled. |
||||
|
||||
You can debug several variables by passing them as additional arguments: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ dump(user, categories) }} |
||||
|
||||
If you don't pass any value, all variables from the current context are |
||||
dumped: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ dump() }} |
||||
|
||||
.. note:: |
||||
|
||||
Internally, Twig uses the PHP `var_dump`_ function. |
||||
|
||||
.. _`XDebug`: http://xdebug.org/docs/display |
||||
.. _`var_dump`: http://php.net/var_dump |
@ -1,15 +0,0 @@ |
||||
Functions |
||||
========= |
||||
|
||||
.. toctree:: |
||||
:maxdepth: 1 |
||||
|
||||
range |
||||
cycle |
||||
constant |
||||
random |
||||
attribute |
||||
block |
||||
parent |
||||
dump |
||||
date |
@ -1,20 +0,0 @@ |
||||
``parent`` |
||||
========== |
||||
|
||||
When a template uses inheritance, it's possible to render the contents of the |
||||
parent block when overriding a block by using the ``parent`` function: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% extends "base.html" %} |
||||
|
||||
{% block sidebar %} |
||||
<h3>Table Of Contents</h3> |
||||
... |
||||
{{ parent() }} |
||||
{% endblock %} |
||||
|
||||
The ``parent()`` call will return the content of the ``sidebar`` block as |
||||
defined in the ``base.html`` template. |
||||
|
||||
.. seealso:: :doc:`extends<../tags/extends>`, :doc:`block<../functions/block>`, :doc:`block<../tags/block>` |
@ -1,24 +0,0 @@ |
||||
``random`` |
||||
========== |
||||
|
||||
.. versionadded:: 1.5 |
||||
The random function was added in Twig 1.5. |
||||
|
||||
.. versionadded:: 1.6 |
||||
String and integer handling was added in Twig 1.6. |
||||
|
||||
The ``random`` function returns a random value depending on the supplied |
||||
parameter type: |
||||
|
||||
* a random item from a sequence; |
||||
* a random character from a string; |
||||
* a random integer between 0 and the integer parameter (inclusive). |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ random(['apple', 'orange', 'citrus']) }} {# example output: orange #} |
||||
{{ random('ABC') }} {# example output: C #} |
||||
{{ random() }} {# example output: 15386094 (works as native PHP `mt_rand`_ function) #} |
||||
{{ random(5) }} {# example output: 3 #} |
||||
|
||||
.. _`mt_rand`: http://php.net/mt_rand |
@ -1,38 +0,0 @@ |
||||
``range`` |
||||
========= |
||||
|
||||
Returns a list containing an arithmetic progression of integers: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for i in range(0, 3) %} |
||||
{{ i }}, |
||||
{% endfor %} |
||||
|
||||
{# returns 0, 1, 2, 3 #} |
||||
|
||||
When step is given (as the third parameter), it specifies the increment (or |
||||
decrement): |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for i in range(0, 6, 2) %} |
||||
{{ i }}, |
||||
{% endfor %} |
||||
|
||||
{# returns 0, 2, 4, 6 #} |
||||
|
||||
The Twig built-in ``..`` operator is just syntactic sugar for the ``range`` |
||||
function (with a step of 1): |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for i in 0..3 %} |
||||
{{ i }}, |
||||
{% endfor %} |
||||
|
||||
.. tip:: |
||||
|
||||
The ``range`` function works as the native PHP `range`_ function. |
||||
|
||||
.. _`range`: http://php.net/range |
@ -1,184 +0,0 @@ |
||||
Hacking Twig |
||||
============ |
||||
|
||||
Twig is very extensible and you can easily hack it. Keep in mind that you |
||||
should probably try to create an extension before hacking the core, as most |
||||
features and enhancements can be done with extensions. This chapter is also |
||||
useful for people who want to understand how Twig works under the hood. |
||||
|
||||
How Twig works? |
||||
--------------- |
||||
|
||||
The rendering of a Twig template can be summarized into four key steps: |
||||
|
||||
* **Load** the template: If the template is already compiled, load it and go |
||||
to the *evaluation* step, otherwise: |
||||
|
||||
* First, the **lexer** tokenizes the template source code into small pieces |
||||
for easier processing; |
||||
* Then, the **parser** converts the token stream into a meaningful tree |
||||
of nodes (the Abstract Syntax Tree); |
||||
* Eventually, the *compiler* transforms the AST into PHP code; |
||||
|
||||
* **Evaluate** the template: It basically means calling the ``display()`` |
||||
method of the compiled template and passing it the context. |
||||
|
||||
The Lexer |
||||
--------- |
||||
|
||||
The Twig lexer goal is to tokenize a source code into a token stream (each |
||||
token is of class ``Token``, and the stream is an instance of |
||||
``Twig_TokenStream``). The default lexer recognizes nine different token types: |
||||
|
||||
* ``Twig_Token::TEXT_TYPE`` |
||||
* ``Twig_Token::BLOCK_START_TYPE`` |
||||
* ``Twig_Token::VAR_START_TYPE`` |
||||
* ``Twig_Token::BLOCK_END_TYPE`` |
||||
* ``Twig_Token::VAR_END_TYPE`` |
||||
* ``Twig_Token::NAME_TYPE`` |
||||
* ``Twig_Token::NUMBER_TYPE`` |
||||
* ``Twig_Token::STRING_TYPE`` |
||||
* ``Twig_Token::OPERATOR_TYPE`` |
||||
* ``Twig_Token::EOF_TYPE`` |
||||
|
||||
You can manually convert a source code into a token stream by calling the |
||||
``tokenize()`` of an environment:: |
||||
|
||||
$stream = $twig->tokenize($source, $identifier); |
||||
|
||||
As the stream has a ``__toString()`` method, you can have a textual |
||||
representation of it by echoing the object:: |
||||
|
||||
echo $stream."\n"; |
||||
|
||||
Here is the output for the ``Hello {{ name }}`` template: |
||||
|
||||
.. code-block:: text |
||||
|
||||
TEXT_TYPE(Hello ) |
||||
VAR_START_TYPE() |
||||
NAME_TYPE(name) |
||||
VAR_END_TYPE() |
||||
EOF_TYPE() |
||||
|
||||
You can change the default lexer use by Twig (``Twig_Lexer``) by calling the |
||||
``setLexer()`` method:: |
||||
|
||||
$twig->setLexer($lexer); |
||||
|
||||
Lexer classes must implement the ``Twig_LexerInterface``:: |
||||
|
||||
interface Twig_LexerInterface |
||||
{ |
||||
/** |
||||
* Tokenizes a source code. |
||||
* |
||||
* @param string $code The source code |
||||
* @param string $filename A unique identifier for the source code |
||||
* |
||||
* @return Twig_TokenStream A token stream instance |
||||
*/ |
||||
function tokenize($code, $filename = 'n/a'); |
||||
} |
||||
|
||||
The Parser |
||||
---------- |
||||
|
||||
The parser converts the token stream into an AST (Abstract Syntax Tree), or a |
||||
node tree (of class ``Twig_Node_Module``). The core extension defines the |
||||
basic nodes like: ``for``, ``if``, ... and the expression nodes. |
||||
|
||||
You can manually convert a token stream into a node tree by calling the |
||||
``parse()`` method of an environment:: |
||||
|
||||
$nodes = $twig->parse($stream); |
||||
|
||||
Echoing the node object gives you a nice representation of the tree:: |
||||
|
||||
echo $nodes."\n"; |
||||
|
||||
Here is the output for the ``Hello {{ name }}`` template: |
||||
|
||||
.. code-block:: text |
||||
|
||||
Twig_Node_Module( |
||||
Twig_Node_Text(Hello ) |
||||
Twig_Node_Print( |
||||
Twig_Node_Expression_Name(name) |
||||
) |
||||
) |
||||
|
||||
The default parser (``Twig_TokenParser``) can be also changed by calling the |
||||
``setParser()`` method:: |
||||
|
||||
$twig->setParser($parser); |
||||
|
||||
All Twig parsers must implement the ``Twig_ParserInterface``:: |
||||
|
||||
interface Twig_ParserInterface |
||||
{ |
||||
/** |
||||
* Converts a token stream to a node tree. |
||||
* |
||||
* @param Twig_TokenStream $stream A token stream instance |
||||
* |
||||
* @return Twig_Node_Module A node tree |
||||
*/ |
||||
function parser(Twig_TokenStream $code); |
||||
} |
||||
|
||||
The Compiler |
||||
------------ |
||||
|
||||
The last step is done by the compiler. It takes a node tree as an input and |
||||
generates PHP code usable for runtime execution of the templates. The default |
||||
compiler generates PHP classes to ease the implementation of the template |
||||
inheritance feature. |
||||
|
||||
You can call the compiler by hand with the ``compile()`` method of an |
||||
environment:: |
||||
|
||||
$php = $twig->compile($nodes); |
||||
|
||||
The ``compile()`` method returns the PHP source code representing the node. |
||||
|
||||
The generated template for a ``Hello {{ name }}`` template reads as follows:: |
||||
|
||||
/* Hello {{ name }} */ |
||||
class __TwigTemplate_1121b6f109fe93ebe8c6e22e3712bceb extends Twig_Template |
||||
{ |
||||
public function display($context) |
||||
{ |
||||
$this->env->initRuntime(); |
||||
|
||||
// line 1 |
||||
echo "Hello "; |
||||
echo (isset($context['name']) ? $context['name'] : null); |
||||
} |
||||
} |
||||
|
||||
As for the lexer and the parser, the default compiler (``Twig_Compiler``) can |
||||
be changed by calling the ``setCompiler()`` method:: |
||||
|
||||
$twig->setCompiler($compiler); |
||||
|
||||
All Twig compilers must implement the ``Twig_CompilerInterface``:: |
||||
|
||||
interface Twig_CompilerInterface |
||||
{ |
||||
/** |
||||
* Compiles a node. |
||||
* |
||||
* @param Twig_Node $node The node to compile |
||||
* |
||||
* @return Twig_Compiler The current compiler instance |
||||
*/ |
||||
function compile(Twig_Node $node); |
||||
|
||||
/** |
||||
* Gets the current PHP code after compilation. |
||||
* |
||||
* @return string The PHP code |
||||
*/ |
||||
function getSource(); |
||||
} |
@ -1,18 +0,0 @@ |
||||
Twig |
||||
==== |
||||
|
||||
.. toctree:: |
||||
:maxdepth: 2 |
||||
|
||||
intro |
||||
templates |
||||
api |
||||
advanced |
||||
extensions |
||||
hacking |
||||
recipes |
||||
coding_standards |
||||
tags/index |
||||
filters/index |
||||
functions/index |
||||
tests/index |
@ -1,153 +0,0 @@ |
||||
Introduction |
||||
============ |
||||
|
||||
This is the documentation for Twig, the flexible, fast, and secure template |
||||
engine for PHP. |
||||
|
||||
If you have any exposure to other text-based template languages, such as |
||||
Smarty, Django, or Jinja, you should feel right at home with Twig. It's both |
||||
designer and developer friendly by sticking to PHP's principles and adding |
||||
functionality useful for templating environments. |
||||
|
||||
The key-features are... |
||||
|
||||
* *Fast*: Twig compiles templates down to plain optimized PHP code. The |
||||
overhead compared to regular PHP code was reduced to the very minimum. |
||||
|
||||
* *Secure*: Twig has a sandbox mode to evaluate untrusted template code. This |
||||
allows Twig to be used as a template language for applications where users |
||||
may modify the template design. |
||||
|
||||
* *Flexible*: Twig is powered by a flexible lexer and parser. This allows the |
||||
developer to define its own custom tags and filters, and create its own DSL. |
||||
|
||||
Prerequisites |
||||
------------- |
||||
|
||||
Twig needs at least **PHP 5.2.4** to run. |
||||
|
||||
Installation |
||||
------------ |
||||
|
||||
You have multiple ways to install Twig. If you are unsure what to do, go with |
||||
the tarball. |
||||
|
||||
Installing from the tarball release |
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
1. Download the most recent tarball from the `download page`_ |
||||
2. Unpack the tarball |
||||
3. Move the files somewhere in your project |
||||
|
||||
Installing the development version |
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
1. Install Subversion or Git |
||||
2. For Git: ``git clone git://github.com/fabpot/Twig.git`` |
||||
3. For Subversion: ``svn co http://svn.twig-project.org/trunk/ twig`` |
||||
|
||||
Installing the PEAR package |
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
1. Install PEAR |
||||
2. ``pear channel-discover pear.twig-project.org`` |
||||
3. ``pear install twig/Twig`` (or ``pear install twig/Twig-beta``) |
||||
|
||||
Installing via Composer |
||||
~~~~~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
1. Install composer in your project: |
||||
|
||||
.. code-block:: bash |
||||
|
||||
curl -s http://getcomposer.org/installer | php`` |
||||
|
||||
2. Create a ``composer.json`` file in your project root: |
||||
|
||||
.. code-block:: javascript |
||||
|
||||
{ |
||||
"require": { |
||||
"twig/twig": "1.6.0" |
||||
} |
||||
} |
||||
|
||||
3. Install via composer |
||||
|
||||
.. code-block:: bash |
||||
|
||||
php composer.phar install |
||||
|
||||
Installing the C extension |
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
.. versionadded:: 1.4 |
||||
The C extension was added in Twig 1.4. |
||||
|
||||
Twig comes with a C extension that enhances the performance of the Twig |
||||
runtime engine. You can install it like any other PHP extension: |
||||
|
||||
.. code-block:: bash |
||||
|
||||
$ cd ext/twig |
||||
$ phpize |
||||
$ ./configure |
||||
$ make |
||||
$ make install |
||||
|
||||
Finally, enable the extension in your ``php.ini`` configuration file: |
||||
|
||||
.. code-block:: ini |
||||
|
||||
extension=twig.so |
||||
|
||||
And from now on, Twig will automatically compile your templates to take |
||||
advantage of the C extension. |
||||
|
||||
.. tip:: |
||||
|
||||
On Windows, you can also simply download and install a `pre-build DLL`_. |
||||
|
||||
Basic API Usage |
||||
--------------- |
||||
|
||||
This section gives you a brief introduction to the PHP API for Twig. |
||||
|
||||
The first step to use Twig is to register its autoloader:: |
||||
|
||||
require_once '/path/to/lib/Twig/Autoloader.php'; |
||||
Twig_Autoloader::register(); |
||||
|
||||
Replace the ``/path/to/lib/`` path with the path you used for Twig |
||||
installation. |
||||
|
||||
.. note:: |
||||
|
||||
Twig follows the PEAR convention names for its classes, which means you |
||||
can easily integrate Twig classes loading in your own autoloader. |
||||
|
||||
.. code-block:: php |
||||
|
||||
$loader = new Twig_Loader_String(); |
||||
$twig = new Twig_Environment($loader); |
||||
|
||||
echo $twig->render('Hello {{ name }}!', array('name' => 'Fabien')); |
||||
|
||||
Twig uses a loader (``Twig_Loader_String``) to locate templates, and an |
||||
environment (``Twig_Environment``) to store the configuration. |
||||
|
||||
The ``render()`` method loads the template passed as a first argument and |
||||
renders it with the variables passed as a second argument. |
||||
|
||||
As templates are generally stored on the filesystem, Twig also comes with a |
||||
filesystem loader:: |
||||
|
||||
$loader = new Twig_Loader_Filesystem('/path/to/templates'); |
||||
$twig = new Twig_Environment($loader, array( |
||||
'cache' => '/path/to/compilation_cache', |
||||
)); |
||||
|
||||
echo $twig->render('index.html', array('name' => 'Fabien')); |
||||
|
||||
.. _`download page`: https://github.com/fabpot/Twig/tags |
||||
.. _`pre-build DLL`: https://github.com/stealth35/stealth35.github.com/downloads |
@ -1,301 +0,0 @@ |
||||
Recipes |
||||
======= |
||||
|
||||
Making a Layout conditional |
||||
--------------------------- |
||||
|
||||
Working with Ajax means that the same content is sometimes displayed as is, |
||||
and sometimes decorated with a layout. As Twig layout template names can be |
||||
any valid expression, you can pass a variable that evaluates to ``true`` when |
||||
the request is made via Ajax and choose the layout accordingly: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% extends request.ajax ? "base_ajax.html" : "base.html" %} |
||||
|
||||
{% block content %} |
||||
This is the content to be displayed. |
||||
{% endblock %} |
||||
|
||||
Making an Include dynamic |
||||
------------------------- |
||||
|
||||
When including a template, its name does not need to be a string. For |
||||
instance, the name can depend on the value of a variable: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% include var ~ '_foo.html' %} |
||||
|
||||
If ``var`` evaluates to ``index``, the ``index_foo.html`` template will be |
||||
rendered. |
||||
|
||||
As a matter of fact, the template name can be any valid expression, such as |
||||
the following: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% include var|default('index') ~ '_foo.html' %} |
||||
|
||||
Overriding a Template that also extends itself |
||||
---------------------------------------------- |
||||
|
||||
A template can be customized in two different ways: |
||||
|
||||
* *Inheritance*: A template *extends* a parent template and overrides some |
||||
blocks; |
||||
|
||||
* *Replacement*: If you use the filesystem loader, Twig loads the first |
||||
template it finds in a list of configured directories; a template found in a |
||||
directory *replaces* another one from a directory further in the list. |
||||
|
||||
But how do you combine both: *replace* a template that also extends itself |
||||
(aka a template in a directory further in the list)? |
||||
|
||||
Let's say that your templates are loaded from both ``.../templates/mysite`` |
||||
and ``.../templates/default`` in this order. The ``page.twig`` template, |
||||
stored in ``.../templates/default`` reads as follows: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# page.twig #} |
||||
{% extends "layout.twig" %} |
||||
|
||||
{% block content %} |
||||
{% endblock %} |
||||
|
||||
You can replace this template by putting a file with the same name in |
||||
``.../templates/mysite``. And if you want to extend the original template, you |
||||
might be tempted to write the following: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# page.twig in .../templates/mysite #} |
||||
{% extends "page.twig" %} {# from .../templates/default #} |
||||
|
||||
Of course, this will not work as Twig will always load the template from |
||||
``.../templates/mysite``. |
||||
|
||||
It turns out it is possible to get this to work, by adding a directory right |
||||
at the end of your template directories, which is the parent of all of the |
||||
other directories: ``.../templates`` in our case. This has the effect of |
||||
making every template file within our system uniquely addressable. Most of the |
||||
time you will use the "normal" paths, but in the special case of wanting to |
||||
extend a template with an overriding version of itself we can reference its |
||||
parent's full, unambiguous template path in the extends tag: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# page.twig in .../templates/mysite #} |
||||
{% extends "default/page.twig" %} {# from .../templates #} |
||||
|
||||
.. note:: |
||||
|
||||
This recipe was inspired by the following Django wiki page: |
||||
http://code.djangoproject.com/wiki/ExtendingTemplates |
||||
|
||||
Customizing the Syntax |
||||
---------------------- |
||||
|
||||
Twig allows some syntax customization for the block delimiters. It's not |
||||
recommended to use this feature as templates will be tied with your custom |
||||
syntax. But for specific projects, it can make sense to change the defaults. |
||||
|
||||
To change the block delimiters, you need to create your own lexer object:: |
||||
|
||||
$twig = new Twig_Environment(); |
||||
|
||||
$lexer = new Twig_Lexer($twig, array( |
||||
'tag_comment' => array('{#', '#}'), |
||||
'tag_block' => array('{%', '%}'), |
||||
'tag_variable' => array('{{', '}}'), |
||||
)); |
||||
$twig->setLexer($lexer); |
||||
|
||||
Here are some configuration example that simulates some other template engines |
||||
syntax:: |
||||
|
||||
// Ruby erb syntax |
||||
$lexer = new Twig_Lexer($twig, array( |
||||
'tag_comment' => array('<%#', '%>'), |
||||
'tag_block' => array('<%', '%>'), |
||||
'tag_variable' => array('<%=', '%>'), |
||||
)); |
||||
|
||||
// SGML Comment Syntax |
||||
$lexer = new Twig_Lexer($twig, array( |
||||
'tag_comment' => array('<!--#', '-->'), |
||||
'tag_block' => array('<!--', '-->'), |
||||
'tag_variable' => array('${', '}'), |
||||
)); |
||||
|
||||
// Smarty like |
||||
$lexer = new Twig_Lexer($twig, array( |
||||
'tag_comment' => array('{*', '*}'), |
||||
'tag_block' => array('{', '}'), |
||||
'tag_variable' => array('{$', '}'), |
||||
)); |
||||
|
||||
Using dynamic Object Properties |
||||
------------------------------- |
||||
|
||||
When Twig encounters a variable like ``article.title``, it tries to find a |
||||
``title`` public property in the ``article`` object. |
||||
|
||||
It also works if the property does not exist but is rather defined dynamically |
||||
thanks to the magic ``__get()`` method; you just need to also implement the |
||||
``__isset()`` magic method like shown in the following snippet of code:: |
||||
|
||||
class Article |
||||
{ |
||||
public function __get($name) |
||||
{ |
||||
if ('title' == $name) |
||||
{ |
||||
return 'The title'; |
||||
} |
||||
|
||||
// throw some kind of error |
||||
} |
||||
|
||||
public function __isset($name) |
||||
{ |
||||
if ('title' == $name) |
||||
{ |
||||
return true; |
||||
} |
||||
|
||||
return false; |
||||
} |
||||
} |
||||
|
||||
Accessing the parent Context in Nested Loops |
||||
-------------------------------------------- |
||||
|
||||
Sometimes, when using nested loops, you need to access the parent context. The |
||||
parent context is always accessible via the ``loop.parent`` variable. For |
||||
instance, if you have the following template data:: |
||||
|
||||
$data = array( |
||||
'topics' => array( |
||||
'topic1' => array('Message 1 of topic 1', 'Message 2 of topic 1'), |
||||
'topic2' => array('Message 1 of topic 2', 'Message 2 of topic 2'), |
||||
), |
||||
); |
||||
|
||||
And the following template to display all messages in all topics: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for topic, messages in topics %} |
||||
* {{ loop.index }}: {{ topic }} |
||||
{% for message in messages %} |
||||
- {{ loop.parent.loop.index }}.{{ loop.index }}: {{ message }} |
||||
{% endfor %} |
||||
{% endfor %} |
||||
|
||||
The output will be similar to: |
||||
|
||||
.. code-block:: text |
||||
|
||||
* 1: topic1 |
||||
- 1.1: The message 1 of topic 1 |
||||
- 1.2: The message 2 of topic 1 |
||||
* 2: topic2 |
||||
- 2.1: The message 1 of topic 2 |
||||
- 2.2: The message 2 of topic 2 |
||||
|
||||
In the inner loop, the ``loop.parent`` variable is used to access the outer |
||||
context. So, the index of the current ``topic`` defined in the outer for loop |
||||
is accessible via the ``loop.parent.loop.index`` variable. |
||||
|
||||
Defining undefined Functions and Filters on the Fly |
||||
--------------------------------------------------- |
||||
|
||||
When a function (or a filter) is not defined, Twig defaults to throw a |
||||
``Twig_Error_Syntax`` exception. However, it can also call a `callback`_ (any |
||||
valid PHP callable) which should return a function (or a filter). |
||||
|
||||
For filters, register callbacks with ``registerUndefinedFilterCallback()``. |
||||
For functions, use ``registerUndefinedFunctionCallback()``:: |
||||
|
||||
// auto-register all native PHP functions as Twig functions |
||||
// don't try this at home as it's not secure at all! |
||||
$twig->registerUndefinedFunctionCallback(function ($name) { |
||||
if (function_exists($name)) { |
||||
return new Twig_Function_Function($name); |
||||
} |
||||
|
||||
return false; |
||||
}); |
||||
|
||||
If the callable is not able to return a valid function (or filter), it must |
||||
return ``false``. |
||||
|
||||
If you register more than one callback, Twig will call them in turn until one |
||||
does not return ``false``. |
||||
|
||||
.. tip:: |
||||
|
||||
As the resolution of functions and filters is done during compilation, |
||||
there is no overhead when registering these callbacks. |
||||
|
||||
Validating the Template Syntax |
||||
------------------------------ |
||||
|
||||
When template code is providing by a third-party (through a web interface for |
||||
instance), it might be interesting to validate the template syntax before |
||||
saving it. If the template code is stored in a `$template` variable, here is |
||||
how you can do it:: |
||||
|
||||
try { |
||||
$twig->parse($twig->tokenize($template)); |
||||
|
||||
// the $template is valid |
||||
} catch (Twig_Error_Syntax $e) { |
||||
// $template contains one or more syntax errors |
||||
} |
||||
|
||||
Refreshing modified Templates when APC is enabled and apc.stat = 0 |
||||
------------------------------------------------------------------ |
||||
|
||||
When using APC with ``apc.stat`` set to ``0`` and Twig cache enabled, clearing |
||||
the template cache won't update the APC cache. To get around this, one can |
||||
extend ``Twig_Environment`` and force the update of the APC cache when Twig |
||||
rewrites the cache:: |
||||
|
||||
class Twig_Environment_APC extends Twig_Environment |
||||
{ |
||||
protected function writeCacheFile($file, $content) |
||||
{ |
||||
parent::writeCacheFile($file, $content); |
||||
|
||||
// Compile cached file into bytecode cache |
||||
apc_compile_file($file); |
||||
} |
||||
} |
||||
|
||||
Reusing a stateful Node Visitor |
||||
------------------------------- |
||||
|
||||
When attaching a visitor to a ``Twig_Environment`` instance, Twig uses it to |
||||
visit *all* templates it compiles. If you need to keep some state information |
||||
around, you probably want to reset it when visiting a new template. |
||||
|
||||
This can be easily achieved with the following code:: |
||||
|
||||
protected $someTemplateState = array(); |
||||
|
||||
public function enterNode(Twig_NodeInterface $node, Twig_Environment $env) |
||||
{ |
||||
if ($node instanceof Twig_Node_Module) { |
||||
// reset the state as we are entering a new template |
||||
$this->someTemplateState = array(); |
||||
} |
||||
|
||||
// ... |
||||
|
||||
return $node; |
||||
} |
||||
|
||||
.. _callback: http://www.php.net/manual/en/function.is-callable.php |
@ -1,43 +0,0 @@ |
||||
``autoescape`` |
||||
============== |
||||
|
||||
Whether automatic escaping is enabled or not, you can mark a section of a |
||||
template to be escaped or not by using the ``autoescape`` tag: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% autoescape true %} |
||||
Everything will be automatically escaped in this block |
||||
{% endautoescape %} |
||||
|
||||
{% autoescape false %} |
||||
Everything will be outputed as is in this block |
||||
{% endautoescape %} |
||||
|
||||
{% autoescape true js %} |
||||
Everything will be automatically escaped in this block |
||||
using the js escaping strategy |
||||
{% endautoescape %} |
||||
|
||||
When automatic escaping is enabled everything is escaped by default except for |
||||
values explicitly marked as safe. Those can be marked in the template by using |
||||
the :doc:`raw<../filters/raw>` filter: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% autoescape true %} |
||||
{{ safe_value|raw }} |
||||
{% endautoescape %} |
||||
|
||||
Functions returning template data (like :doc:`macros<macro>` and |
||||
:doc:`parent<../functions/parent>`) always return safe markup. |
||||
|
||||
.. note:: |
||||
|
||||
Twig is smart enough to not escape an already escaped value by the |
||||
:doc:`escape<../filters/escape>` filter. |
||||
|
||||
.. note:: |
||||
|
||||
The chapter :doc:`Twig for Developers<../api>` gives more information |
||||
about when and how automatic escaping is applied. |
@ -1,11 +0,0 @@ |
||||
``block`` |
||||
========= |
||||
|
||||
Blocks are used for inheritance and act as placeholders and replacements at |
||||
the same time. They are documented in detail in the documentation for the |
||||
:doc:`extends<../tags/extends>` tag. |
||||
|
||||
Block names should consist of alphanumeric characters, and underscores. Dashes |
||||
are not permitted. |
||||
|
||||
.. seealso:: :doc:`block<../functions/block>`, :doc:`parent<../functions/parent>`, :doc:`use<../tags/use>`, :doc:`extends<../tags/extends>` |
@ -1,12 +0,0 @@ |
||||
``do`` |
||||
====== |
||||
|
||||
.. versionadded:: 1.5 |
||||
The do tag was added in Twig 1.5. |
||||
|
||||
The ``do`` tag works exactly like the regular variable expression (``{{ ... |
||||
}}``) just that it doesn't print anything: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% do 1 + 2 %} |
@ -1,187 +0,0 @@ |
||||
``extends`` |
||||
=========== |
||||
|
||||
The ``extends`` tag can be used to extend a template from another one. |
||||
|
||||
.. note:: |
||||
|
||||
Like PHP, Twig does not support multiple inheritance. So you can only have |
||||
one extends tag called per rendering. However, Twig supports horizontal |
||||
:doc:`reuse<use>`. |
||||
|
||||
Let's define a base template, ``base.html``, which defines a simple HTML |
||||
skeleton document: |
||||
|
||||
.. code-block:: html+jinja |
||||
|
||||
<!DOCTYPE html> |
||||
<html> |
||||
<head> |
||||
{% block head %} |
||||
<link rel="stylesheet" href="style.css" /> |
||||
<title>{% block title %}{% endblock %} - My Webpage</title> |
||||
{% endblock %} |
||||
</head> |
||||
<body> |
||||
<div id="content">{% block content %}{% endblock %}</div> |
||||
<div id="footer"> |
||||
{% block footer %} |
||||
© Copyright 2011 by <a href="http://domain.invalid/">you</a>. |
||||
{% endblock %} |
||||
</div> |
||||
</body> |
||||
</html> |
||||
|
||||
In this example, the :doc:`block<block>` tags define four blocks that child |
||||
templates can fill in. All the ``block`` tag does is to tell the template |
||||
engine that a child template may override those portions of the template. |
||||
|
||||
Child Template |
||||
-------------- |
||||
|
||||
A child template might look like this: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% extends "base.html" %} |
||||
|
||||
{% block title %}Index{% endblock %} |
||||
{% block head %} |
||||
{{ parent() }} |
||||
<style type="text/css"> |
||||
.important { color: #336699; } |
||||
</style> |
||||
{% endblock %} |
||||
{% block content %} |
||||
<h1>Index</h1> |
||||
<p class="important"> |
||||
Welcome on my awesome homepage. |
||||
</p> |
||||
{% endblock %} |
||||
|
||||
The ``extends`` tag is the key here. It tells the template engine that this |
||||
template "extends" another template. When the template system evaluates this |
||||
template, first it locates the parent. The extends tag should be the first tag |
||||
in the template. |
||||
|
||||
Note that since the child template doesn't define the ``footer`` block, the |
||||
value from the parent template is used instead. |
||||
|
||||
You can't define multiple ``block`` tags with the same name in the same |
||||
template. This limitation exists because a block tag works in "both" |
||||
directions. That is, a block tag doesn't just provide a hole to fill - it also |
||||
defines the content that fills the hole in the *parent*. If there were two |
||||
similarly-named ``block`` tags in a template, that template's parent wouldn't |
||||
know which one of the blocks' content to use. |
||||
|
||||
If you want to print a block multiple times you can however use the |
||||
``block`` function: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
<title>{% block title %}{% endblock %}</title> |
||||
<h1>{{ block('title') }}</h1> |
||||
{% block body %}{% endblock %} |
||||
|
||||
Parent Blocks |
||||
------------- |
||||
|
||||
It's possible to render the contents of the parent block by using the |
||||
:doc:`parent<../functions/parent>` function. This gives back the results of |
||||
the parent block: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% block sidebar %} |
||||
<h3>Table Of Contents</h3> |
||||
... |
||||
{{ parent() }} |
||||
{% endblock %} |
||||
|
||||
Named Block End-Tags |
||||
-------------------- |
||||
|
||||
Twig allows you to put the name of the block after the end tag for better |
||||
readability: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% block sidebar %} |
||||
{% block inner_sidebar %} |
||||
... |
||||
{% endblock inner_sidebar %} |
||||
{% endblock sidebar %} |
||||
|
||||
Of course, the name after the ``endblock`` word must match the block name. |
||||
|
||||
Block Nesting and Scope |
||||
----------------------- |
||||
|
||||
Blocks can be nested for more complex layouts. Per default, blocks have access |
||||
to variables from outer scopes: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for item in seq %} |
||||
<li>{% block loop_item %}{{ item }}{% endblock %}</li> |
||||
{% endfor %} |
||||
|
||||
Block Shortcuts |
||||
--------------- |
||||
|
||||
For blocks with few content, it's possible to use a shortcut syntax. The |
||||
following constructs do the same: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% block title %} |
||||
{{ page_title|title }} |
||||
{% endblock %} |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% block title page_title|title %} |
||||
|
||||
Dynamic Inheritance |
||||
------------------- |
||||
|
||||
Twig supports dynamic inheritance by using a variable as the base template: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% extends some_var %} |
||||
|
||||
If the variable evaluates to a ``Twig_Template`` object, Twig will use it as |
||||
the parent template:: |
||||
|
||||
// {% extends layout %} |
||||
|
||||
$layout = $twig->loadTemplate('some_layout_template.twig'); |
||||
|
||||
$twig->display('template.twig', array('layout' => $layout)); |
||||
|
||||
.. versionadded:: 1.2 |
||||
The possibility to pass an array of templates has been added in Twig 1.2. |
||||
|
||||
You can also provide a list of templates that are checked for existence. The |
||||
first template that exists will be used as a parent: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% extends ['layout.html', 'base_layout.html'] %} |
||||
|
||||
Conditional Inheritance |
||||
----------------------- |
||||
|
||||
As the template name for the parent can be any valid Twig expression, it's |
||||
possible to make the inheritance mechanism conditional: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% extends standalone ? "minimum.html" : "base.html" %} |
||||
|
||||
In this example, the template will extend the "minimum.html" layout template |
||||
if the ``standalone`` variable evaluates to ``true``, and "base.html" |
||||
otherwise. |
||||
|
||||
.. seealso:: :doc:`block<../functions/block>`, :doc:`block<../tags/block>`, :doc:`parent<../functions/parent>`, :doc:`use<../tags/use>` |
@ -1,21 +0,0 @@ |
||||
``filter`` |
||||
========== |
||||
|
||||
Filter sections allow you to apply regular Twig filters on a block of template |
||||
data. Just wrap the code in the special ``filter`` section: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% filter upper %} |
||||
This text becomes uppercase |
||||
{% endfilter %} |
||||
|
||||
You can also chain filters: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% filter lower|escape %} |
||||
<strong>SOME TEXT</strong> |
||||
{% endfilter %} |
||||
|
||||
{# outputs "<strong>some text</strong>" #} |
@ -1,17 +0,0 @@ |
||||
``flush`` |
||||
========= |
||||
|
||||
.. versionadded:: 1.5 |
||||
The flush tag was added in Twig 1.5. |
||||
|
||||
The ``flush`` tag tells Twig to flush the output buffer: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% flush %} |
||||
|
||||
.. note:: |
||||
|
||||
Internally, Twig uses the PHP `flush`_ function. |
||||
|
||||
.. _`flush`: http://php.net/flush |
@ -1,149 +0,0 @@ |
||||
``for`` |
||||
======= |
||||
|
||||
Loop over each item in a sequence. For example, to display a list of users |
||||
provided in a variable called ``users``: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
<h1>Members</h1> |
||||
<ul> |
||||
{% for user in users %} |
||||
<li>{{ user.username|e }}</li> |
||||
{% endfor %} |
||||
</ul> |
||||
|
||||
.. note:: |
||||
|
||||
A sequence can be either an array or an object implementing the |
||||
``Traversable`` interface. |
||||
|
||||
If you do need to iterate over a sequence of numbers, you can use the ``..`` |
||||
operator: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for i in 0..10 %} |
||||
* {{ i }} |
||||
{% endfor %} |
||||
|
||||
The above snippet of code would print all numbers from 0 to 10. |
||||
|
||||
It can be also useful with letters: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for letter in 'a'..'z' %} |
||||
* {{ letter }} |
||||
{% endfor %} |
||||
|
||||
The ``..`` operator can take any expression at both sides: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for letter in 'a'|upper..'z'|upper %} |
||||
* {{ letter }} |
||||
{% endfor %} |
||||
|
||||
.. tip: |
||||
|
||||
If you need a step different from 1, you can use the ``range`` function |
||||
instead. |
||||
|
||||
The `loop` variable |
||||
------------------- |
||||
|
||||
Inside of a ``for`` loop block you can access some special variables: |
||||
|
||||
===================== ============================================================= |
||||
Variable Description |
||||
===================== ============================================================= |
||||
``loop.index`` The current iteration of the loop. (1 indexed) |
||||
``loop.index0`` The current iteration of the loop. (0 indexed) |
||||
``loop.revindex`` The number of iterations from the end of the loop (1 indexed) |
||||
``loop.revindex0`` The number of iterations from the end of the loop (0 indexed) |
||||
``loop.first`` True if first iteration |
||||
``loop.last`` True if last iteration |
||||
``loop.length`` The number of items in the sequence |
||||
``loop.parent`` The parent context |
||||
===================== ============================================================= |
||||
|
||||
.. note:: |
||||
|
||||
The ``loop.length``, ``loop.revindex``, ``loop.revindex0``, and |
||||
``loop.last`` variables are only available for PHP arrays, or objects that |
||||
implement the ``Countable`` interface. |
||||
|
||||
.. versionadded:: 1.2 |
||||
The ``if`` modifier support has been added in Twig 1.2. |
||||
|
||||
Adding a condition |
||||
------------------ |
||||
|
||||
Unlike in PHP, it's not possible to ``break`` or ``continue`` in a loop. You |
||||
can however filter the sequence during iteration which allows you to skip |
||||
items. The following example skips all the users which are not active: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
<ul> |
||||
{% for user in users if user.active %} |
||||
<li>{{ user.username|e }}</li> |
||||
{% endfor %} |
||||
</ul> |
||||
|
||||
The advantage is that the special loop variable will count correctly thus not |
||||
counting the users not iterated over. |
||||
|
||||
.. note:: |
||||
|
||||
Using the ``loop`` variable within the condition is not recommended as it |
||||
will probably not be doing what you expect it to. For instance, adding a |
||||
condition like ``loop.index > 4`` won't work as the index is only |
||||
incremented when the condition is true (so the condition will never |
||||
match). |
||||
|
||||
The `else` Clause |
||||
----------------- |
||||
|
||||
If no iteration took place because the sequence was empty, you can render a |
||||
replacement block by using ``else``: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
<ul> |
||||
{% for user in users %} |
||||
<li>{{ user.username|e }}</li> |
||||
{% else %} |
||||
<li><em>no user found</em></li> |
||||
{% endfor %} |
||||
</ul> |
||||
|
||||
Iterating over Keys |
||||
------------------- |
||||
|
||||
By default, a loop iterates over the values of the sequence. You can iterate |
||||
on keys by using the ``keys`` filter: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
<h1>Members</h1> |
||||
<ul> |
||||
{% for key in users|keys %} |
||||
<li>{{ key }}</li> |
||||
{% endfor %} |
||||
</ul> |
||||
|
||||
Iterating over Keys and Values |
||||
------------------------------ |
||||
|
||||
You can also access both keys and values: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
<h1>Members</h1> |
||||
<ul> |
||||
{% for key, user in users %} |
||||
<li>{{ key }}: {{ user.username|e }}</li> |
||||
{% endfor %} |
||||
</ul> |
@ -1,8 +0,0 @@ |
||||
``from`` |
||||
======== |
||||
|
||||
The ``from`` tags import :doc:`macro<../tags/macro>` names into the current |
||||
namespace. The tag is documented in detail in the documentation for the |
||||
:doc:`import<../tags/import>` tag. |
||||
|
||||
.. seealso:: :doc:`macro<../tags/macro>`, :doc:`import<../tags/import>` |
@ -1,43 +0,0 @@ |
||||
``if`` |
||||
====== |
||||
|
||||
The ``if`` statement in Twig is comparable with the if statements of PHP. |
||||
|
||||
In the simplest form you can use it to test if an expression evaluates to |
||||
``true``: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if online == false %} |
||||
<p>Our website is in maintenance mode. Please, come back later.</p> |
||||
{% endif %} |
||||
|
||||
You can also test if an array is not empty: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if users %} |
||||
<ul> |
||||
{% for user in users %} |
||||
<li>{{ user.username|e }}</li> |
||||
{% endfor %} |
||||
</ul> |
||||
{% endif %} |
||||
|
||||
.. note:: |
||||
|
||||
If you want to test if the variable is defined, use ``if users is |
||||
defined`` instead. |
||||
|
||||
For multiple branches ``elseif`` and ``else`` can be used like in PHP. You can use |
||||
more complex ``expressions`` there too: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if kenny.sick %} |
||||
Kenny is sick. |
||||
{% elseif kenny.dead %} |
||||
You killed Kenny! You bastard!!! |
||||
{% else %} |
||||
Kenny looks okay --- so far |
||||
{% endif %} |
@ -1,79 +0,0 @@ |
||||
``import`` |
||||
========== |
||||
|
||||
Twig supports putting often used code into :doc:`macros<../tags/macro>`. These |
||||
macros can go into different templates and get imported from there. |
||||
|
||||
There are two ways to import templates. You can import the complete template |
||||
into a variable or request specific macros from it. |
||||
|
||||
Imagine we have a helper module that renders forms (called ``forms.html``): |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% macro input(name, value, type, size) %} |
||||
<input type="{{ type|default('text') }}" name="{{ name }}" value="{{ value|e }}" size="{{ size|default(20) }}" /> |
||||
{% endmacro %} |
||||
|
||||
{% macro textarea(name, value, rows) %} |
||||
<textarea name="{{ name }}" rows="{{ rows|default(10) }}" cols="{{ cols|default(40) }}">{{ value|e }}</textarea> |
||||
{% endmacro %} |
||||
|
||||
The easiest and most flexible is importing the whole module into a variable. |
||||
That way you can access the attributes: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% import 'forms.html' as forms %} |
||||
|
||||
<dl> |
||||
<dt>Username</dt> |
||||
<dd>{{ forms.input('username') }}</dd> |
||||
<dt>Password</dt> |
||||
<dd>{{ forms.input('password', null, 'password') }}</dd> |
||||
</dl> |
||||
<p>{{ forms.textarea('comment') }}</p> |
||||
|
||||
Alternatively you can import names from the template into the current |
||||
namespace: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% from 'forms.html' import input as input_field, textarea %} |
||||
|
||||
<dl> |
||||
<dt>Username</dt> |
||||
<dd>{{ input_field('username') }}</dd> |
||||
<dt>Password</dt> |
||||
<dd>{{ input_field('password', '', 'password') }}</dd> |
||||
</dl> |
||||
<p>{{ textarea('comment') }}</p> |
||||
|
||||
Importing is not needed if the macros and the template are defined in the same |
||||
file; use the special ``_self`` variable instead: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# index.html template #} |
||||
|
||||
{% macro textarea(name, value, rows) %} |
||||
<textarea name="{{ name }}" rows="{{ rows|default(10) }}" cols="{{ cols|default(40) }}">{{ value|e }}</textarea> |
||||
{% endmacro %} |
||||
|
||||
<p>{{ _self.textarea('comment') }}</p> |
||||
|
||||
But you can still create an alias by importing from the ``_self`` variable: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# index.html template #} |
||||
|
||||
{% macro textarea(name, value, rows) %} |
||||
<textarea name="{{ name }}" rows="{{ rows|default(10) }}" cols="{{ cols|default(40) }}">{{ value|e }}</textarea> |
||||
{% endmacro %} |
||||
|
||||
{% import _self as forms %} |
||||
|
||||
<p>{{ forms.textarea('comment') }}</p> |
||||
|
||||
.. seealso:: :doc:`macro<../tags/macro>`, :doc:`from<../tags/from>` |
@ -1,86 +0,0 @@ |
||||
``include`` |
||||
=========== |
||||
|
||||
The ``include`` statement includes a template and return the rendered content |
||||
of that file into the current namespace: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% include 'header.html' %} |
||||
Body |
||||
{% include 'footer.html' %} |
||||
|
||||
Included templates have access to the variables of the active context. |
||||
|
||||
If you are using the filesystem loader, the templates are looked for in the |
||||
paths defined by it. |
||||
|
||||
You can add additional variables by passing them after the ``with`` keyword: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# the foo template will have access to the variables from the current context and the foo one #} |
||||
{% include 'foo' with {'foo': 'bar'} %} |
||||
|
||||
{% set vars = {'foo': 'bar'} %} |
||||
{% include 'foo' with vars %} |
||||
|
||||
You can disable access to the context by appending the ``only`` keyword: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# only the foo variable will be accessible #} |
||||
{% include 'foo' with {'foo': 'bar'} only %} |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# no variable will be accessible #} |
||||
{% include 'foo' only %} |
||||
|
||||
.. tip:: |
||||
|
||||
When including a template created by an end user, you should consider |
||||
sandboxing it. More information in the :doc:`Twig for Developers<../api>` |
||||
chapter. |
||||
|
||||
The template name can be any valid Twig expression: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% include some_var %} |
||||
{% include ajax ? 'ajax.html' : 'not_ajax.html' %} |
||||
|
||||
And if the expression evaluates to a ``Twig_Template`` object, Twig will use it |
||||
directly:: |
||||
|
||||
// {% include template %} |
||||
|
||||
$template = $twig->loadTemplate('some_template.twig'); |
||||
|
||||
$twig->loadTemplate('template.twig')->display(array('template' => $template)); |
||||
|
||||
.. versionadded:: 1.2 |
||||
The ``ignore missing`` feature has been added in Twig 1.2. |
||||
|
||||
You can mark an include with ``ignore missing`` in which case Twig will ignore |
||||
the statement if the template to be ignored does not exist. It has to be |
||||
placed just after the template name. Here some valid examples: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% include "sidebar.html" ignore missing %} |
||||
{% include "sidebar.html" ignore missing with {'foo': 'bar} %} |
||||
{% include "sidebar.html" ignore missing only %} |
||||
|
||||
.. versionadded:: 1.2 |
||||
The possibility to pass an array of templates has been added in Twig 1.2. |
||||
|
||||
You can also provide a list of templates that are checked for existence before |
||||
inclusion. The first template that exists will be included: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% include ['page_detailed.html', 'page.html'] %} |
||||
|
||||
If ``ignore missing`` is given, it will fall back to rendering nothing if none |
||||
of the templates exist, otherwise it will throw an exception. |
@ -1,22 +0,0 @@ |
||||
Tags |
||||
==== |
||||
|
||||
.. toctree:: |
||||
:maxdepth: 1 |
||||
|
||||
for |
||||
if |
||||
macro |
||||
filter |
||||
set |
||||
extends |
||||
block |
||||
include |
||||
import |
||||
from |
||||
use |
||||
spaceless |
||||
autoescape |
||||
raw |
||||
flush |
||||
do |
@ -1,91 +0,0 @@ |
||||
``macro`` |
||||
========= |
||||
|
||||
Macros are comparable with functions in regular programming languages. They |
||||
are useful to put often used HTML idioms into reusable elements to not repeat |
||||
yourself. |
||||
|
||||
Here is a small example of a macro that renders a form element: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% macro input(name, value, type, size) %} |
||||
<input type="{{ type|default('text') }}" name="{{ name }}" value="{{ value|e }}" size="{{ size|default(20) }}" /> |
||||
{% endmacro %} |
||||
|
||||
Macros differs from native PHP functions in a few ways: |
||||
|
||||
* Default argument values are defined by using the ``default`` filter in the |
||||
macro body; |
||||
|
||||
* Arguments of a macro are always optional. |
||||
|
||||
But as PHP functions, macros don't have access to the current template |
||||
variables. |
||||
|
||||
.. tip:: |
||||
|
||||
You can pass the whole context as an argument by using the special |
||||
``_context`` variable. |
||||
|
||||
Macros can be defined in any template, and need to be "imported" before being |
||||
used (see the documentation for the :doc:`import<../tags/import>` tag for more |
||||
information): |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% import "forms.html" as forms %} |
||||
|
||||
The above ``import`` call imports the "forms.html" file (which can contain only |
||||
macros, or a template and some macros), and import the functions as items of |
||||
the ``forms`` variable. |
||||
|
||||
The macro can then be called at will: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
<p>{{ forms.input('username') }}</p> |
||||
<p>{{ forms.input('password', null, 'password') }}</p> |
||||
|
||||
If macros are defined and used in the same template, you can use the |
||||
special ``_self`` variable, without importing them: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
<p>{{ _self.input('username') }}</p> |
||||
|
||||
When you want to use a macro in another one from the same file, use the ``_self`` |
||||
variable: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% macro input(name, value, type, size) %} |
||||
<input type="{{ type|default('text') }}" name="{{ name }}" value="{{ value|e }}" size="{{ size|default(20) }}" /> |
||||
{% endmacro %} |
||||
|
||||
{% macro wrapped_input(name, value, type, size) %} |
||||
<div class="field"> |
||||
{{ _self.input(name, value, type, size) }} |
||||
</div> |
||||
{% endmacro %} |
||||
|
||||
When the macro is defined in another file, you need to import it: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# forms.html #} |
||||
|
||||
{% macro input(name, value, type, size) %} |
||||
<input type="{{ type|default('text') }}" name="{{ name }}" value="{{ value|e }}" size="{{ size|default(20) }}" /> |
||||
{% endmacro %} |
||||
|
||||
{# shortcuts.html #} |
||||
|
||||
{% macro wrapped_input(name, value, type, size) %} |
||||
{% import "forms.html" as forms %} |
||||
<div class="field"> |
||||
{{ forms.input(name, value, type, size) }} |
||||
</div> |
||||
{% endmacro %} |
||||
|
||||
.. seealso:: :doc:`from<../tags/from>`, :doc:`import<../tags/import>` |
@ -1,16 +0,0 @@ |
||||
``raw`` |
||||
======= |
||||
|
||||
The ``raw`` tag marks sections as being raw text that should not be parsed. |
||||
For example to put Twig syntax as example into a template you can use this |
||||
snippet: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% raw %} |
||||
<ul> |
||||
{% for item in seq %} |
||||
<li>{{ item }}</li> |
||||
{% endfor %} |
||||
</ul> |
||||
{% endraw %} |
@ -1,32 +0,0 @@ |
||||
``set`` |
||||
======= |
||||
|
||||
Inside code blocks you can also assign values to variables. Assignments use |
||||
the ``set`` tag and can have multiple targets: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% set foo = 'foo' %} |
||||
|
||||
{% set foo = [1, 2] %} |
||||
|
||||
{% set foo = {'foo': 'bar'} %} |
||||
|
||||
{% set foo = 'foo' ~ 'bar' %} |
||||
|
||||
{% set foo, bar = 'foo', 'bar' %} |
||||
|
||||
The ``set`` tag can also be used to 'capture' chunks of text: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% set foo %} |
||||
<div id="pagination"> |
||||
... |
||||
</div> |
||||
{% endset %} |
||||
|
||||
.. caution:: |
||||
|
||||
If you enable automatic output escaping, Twig will only consider the |
||||
content to be safe when capturing chunks of text. |
@ -1,37 +0,0 @@ |
||||
``spaceless`` |
||||
============= |
||||
|
||||
Use the ``spaceless`` tag to remove whitespace *between HTML tags*, not |
||||
whitespace within HTML tags or whitespace in plain text: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% spaceless %} |
||||
<div> |
||||
<strong>foo</strong> |
||||
</div> |
||||
{% endspaceless %} |
||||
|
||||
{# output will be <div><strong>foo</strong></div> #} |
||||
|
||||
This tag is not meant to "optimize" the size of the generated HTML content but |
||||
merely to avoid extra whitespace between HTML tags to avoid browser rendering |
||||
quirks under some circumstances. |
||||
|
||||
.. tip:: |
||||
|
||||
If you want to optimize the size of the generated HTML content, gzip |
||||
compress the output instead. |
||||
|
||||
.. tip:: |
||||
|
||||
If you want to create a tag that actually removes all extra whitespace in |
||||
an HTML string, be warned that this is not as easy as it seems to be |
||||
(think of ``textarea`` or ``pre`` tags for instance). Using a third-party |
||||
library like Tidy is probably a better idea. |
||||
|
||||
.. tip:: |
||||
|
||||
For more information on whitespace control, read the |
||||
:doc:`dedicated<../templates>` section of the documentation and learn how |
||||
you can also use the whitespace control modifier on your tags. |
@ -1,123 +0,0 @@ |
||||
``use`` |
||||
======= |
||||
|
||||
.. versionadded:: 1.1 |
||||
Horizontal reuse was added in Twig 1.1. |
||||
|
||||
.. note:: |
||||
|
||||
Horizontal reuse is an advanced Twig feature that is hardly ever needed in |
||||
regular templates. It is mainly used by projects that need to make |
||||
template blocks reusable without using inheritance. |
||||
|
||||
Template inheritance is one of the most powerful Twig's feature but it is |
||||
limited to single inheritance; a template can only extend one other template. |
||||
This limitation makes template inheritance simple to understand and easy to |
||||
debug: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% extends "base.html" %} |
||||
|
||||
{% block title %}{% endblock %} |
||||
{% block content %}{% endblock %} |
||||
|
||||
Horizontal reuse is a way to achieve the same goal as multiple inheritance, |
||||
but without the associated complexity: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% extends "base.html" %} |
||||
|
||||
{% use "blocks.html" %} |
||||
|
||||
{% block title %}{% endblock %} |
||||
{% block content %}{% endblock %} |
||||
|
||||
The ``use`` statement tells Twig to import the blocks defined in |
||||
```blocks.html`` into the current template (it's like macros, but for blocks): |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
# blocks.html |
||||
{% block sidebar %}{% endblock %} |
||||
|
||||
In this example, the ``use`` statement imports the ``sidebar`` block into the |
||||
main template. The code is mostly equivalent to the following one (the |
||||
imported blocks are not outputted automatically): |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% extends "base.html" %} |
||||
|
||||
{% block sidebar %}{% endblock %} |
||||
{% block title %}{% endblock %} |
||||
{% block content %}{% endblock %} |
||||
|
||||
.. note:: |
||||
|
||||
The ``use`` tag only imports a template if it does not extend another |
||||
template, if it does not define macros, and if the body is empty. But it |
||||
can *use* other templates. |
||||
|
||||
.. note:: |
||||
|
||||
Because ``use`` statements are resolved independently of the context |
||||
passed to the template, the template reference cannot be an expression. |
||||
|
||||
The main template can also override any imported block. If the template |
||||
already defines the ``sidebar`` block, then the one defined in ``blocks.html`` |
||||
is ignored. To avoid name conflicts, you can rename imported blocks: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% extends "base.html" %} |
||||
|
||||
{% use "blocks.html" with sidebar as base_sidebar %} |
||||
|
||||
{% block sidebar %}{% endblock %} |
||||
{% block title %}{% endblock %} |
||||
{% block content %}{% endblock %} |
||||
|
||||
.. versionadded:: 1.3 |
||||
The ``parent()`` support was added in Twig 1.3. |
||||
|
||||
The ``parent()`` function automatically determines the correct inheritance |
||||
tree, so it can be used when overriding a block defined in an imported |
||||
template: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% extends "base.html" %} |
||||
|
||||
{% use "blocks.html" %} |
||||
|
||||
{% block sidebar %} |
||||
{{ parent() }} |
||||
{% endblock %} |
||||
|
||||
{% block title %}{% endblock %} |
||||
{% block content %}{% endblock %} |
||||
|
||||
In this example, ``parent()`` will correctly call the ``sidebar`` block from |
||||
the ``blocks.html`` template. |
||||
|
||||
.. tip:: |
||||
|
||||
In Twig 1.2, renaming allows you to simulate inheritance by calling the |
||||
"parent" block: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% extends "base.html" %} |
||||
|
||||
{% use "blocks.html" with sidebar as parent_sidebar %} |
||||
|
||||
{% block sidebar %} |
||||
{{ block('parent_sidebar') }} |
||||
{% endblock %} |
||||
|
||||
.. note:: |
||||
|
||||
You can use as many ``use`` statements as you want in any given template. |
||||
If two imported templates define the same block, the latest one wins. |
@ -1,719 +0,0 @@ |
||||
Twig for Template Designers |
||||
=========================== |
||||
|
||||
This document describes the syntax and semantics of the template engine and |
||||
will be most useful as reference to those creating Twig templates. |
||||
|
||||
Synopsis |
||||
-------- |
||||
|
||||
A template is simply a text file. It can generate any text-based format (HTML, |
||||
XML, CSV, LaTeX, etc.). It doesn't have a specific extension, ``.html`` or |
||||
``.xml`` are just fine. |
||||
|
||||
A template contains **variables** or **expressions**, which get replaced with |
||||
values when the template is evaluated, and **tags**, which control the logic |
||||
of the template. |
||||
|
||||
Below is a minimal template that illustrates a few basics. We will cover the |
||||
details later on: |
||||
|
||||
.. code-block:: html+jinja |
||||
|
||||
<!DOCTYPE html> |
||||
<html> |
||||
<head> |
||||
<title>My Webpage</title> |
||||
</head> |
||||
<body> |
||||
<ul id="navigation"> |
||||
{% for item in navigation %} |
||||
<li><a href="{{ item.href }}">{{ item.caption }}</a></li> |
||||
{% endfor %} |
||||
</ul> |
||||
|
||||
<h1>My Webpage</h1> |
||||
{{ a_variable }} |
||||
</body> |
||||
</html> |
||||
|
||||
There are two kinds of delimiters: ``{% ... %}`` and ``{{ ... }}``. The first |
||||
one is used to execute statements such as for-loops, the latter prints the |
||||
result of an expression to the template. |
||||
|
||||
IDEs Integration |
||||
---------------- |
||||
|
||||
Many IDEs support syntax highlighting and auto-completion for Twig: |
||||
|
||||
* *Textmate* via the `Twig bundle`_ |
||||
* *Vim* via the `Jinja syntax plugin`_ |
||||
* *Netbeans* via the `Twig syntax plugin`_ |
||||
* *PhpStorm* (native as of 2.1) |
||||
* *Eclipse* via the `Twig plugin`_ |
||||
* *Sublime Text* via the `Twig bundle`_ |
||||
* *GtkSourceView* via the `Twig language definition`_ (used by gedit and other projects) |
||||
* *Coda* and *SubEthaEdit* via the `Twig syntax mode`_ |
||||
|
||||
Variables |
||||
--------- |
||||
|
||||
The application passes variables to the templates you can mess around in the |
||||
template. Variables may have attributes or elements on them you can access |
||||
too. How a variable looks like heavily depends on the application providing |
||||
those. |
||||
|
||||
You can use a dot (``.``) to access attributes of a variable (methods or |
||||
properties of a PHP object, or items of a PHP array), or the so-called |
||||
"subscript" syntax (``[]``): |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ foo.bar }} |
||||
{{ foo['bar'] }} |
||||
|
||||
.. note:: |
||||
|
||||
It's important to know that the curly braces are *not* part of the |
||||
variable but the print statement. If you access variables inside tags |
||||
don't put the braces around. |
||||
|
||||
If a variable or attribute does not exist you will get back a ``null`` value. |
||||
|
||||
.. sidebar:: Implementation |
||||
|
||||
For convenience sake ``foo.bar`` does the following things on the PHP |
||||
layer: |
||||
|
||||
* check if ``foo`` is an array and ``bar`` a valid element; |
||||
* if not, and if ``foo`` is an object, check that ``bar`` is a valid property; |
||||
* if not, and if ``foo`` is an object, check that ``bar`` is a valid method |
||||
(even if ``bar`` is the constructor - use ``__construct()`` instead); |
||||
* if not, and if ``foo`` is an object, check that ``getBar`` is a valid method; |
||||
* if not, and if ``foo`` is an object, check that ``isBar`` is a valid method; |
||||
* if not, return a ``null`` value. |
||||
|
||||
``foo['bar']`` on the other hand only works with PHP arrays: |
||||
|
||||
* check if ``foo`` is an array and ``bar`` a valid element; |
||||
* if not, return a ``null`` value. |
||||
|
||||
.. note:: |
||||
|
||||
If you want to get a dynamic attribute on a variable, use the |
||||
:doc:`attribute<functions/attribute>` function instead. |
||||
|
||||
Global Variables |
||||
~~~~~~~~~~~~~~~~ |
||||
|
||||
The following variables are always available in templates: |
||||
|
||||
* ``_self``: references the current template; |
||||
* ``_context``: references the current context; |
||||
* ``_charset``: references the current charset. |
||||
|
||||
Setting Variables |
||||
~~~~~~~~~~~~~~~~~ |
||||
|
||||
You can assign values to variables inside code blocks. Assignments use the |
||||
:doc:`set<tags/set>` tag: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% set foo = 'foo' %} |
||||
{% set foo = [1, 2] %} |
||||
{% set foo = {'foo': 'bar'} %} |
||||
|
||||
Filters |
||||
------- |
||||
|
||||
Variables can be modified by **filters**. Filters are separated from the |
||||
variable by a pipe symbol (``|``) and may have optional arguments in |
||||
parentheses. Multiple filters can be chained. The output of one filter is |
||||
applied to the next. |
||||
|
||||
The following example removes all HTML tags from the ``name`` and title-cases |
||||
it: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ name|striptags|title }} |
||||
|
||||
Filters that accept arguments have parentheses around the arguments. This |
||||
example will join a list by commas: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ list|join(', ') }} |
||||
|
||||
To apply a filter on a section of code, wrap it with the |
||||
:doc:`filter<tags/filter>` tag: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% filter upper %} |
||||
This text becomes uppercase |
||||
{% endfilter %} |
||||
|
||||
Go to the :doc:`filters<filters/index>` page to learn more about the built-in |
||||
filters. |
||||
|
||||
Functions |
||||
--------- |
||||
|
||||
Functions can be called to generate content. Functions are called by their |
||||
name followed by parentheses (``()``) and may have arguments. |
||||
|
||||
For instance, the ``range`` function returns a list containing an arithmetic |
||||
progression of integers: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for i in range(0, 3) %} |
||||
{{ i }}, |
||||
{% endfor %} |
||||
|
||||
Go to the :doc:`functions<functions/index>` page to learn more about the |
||||
built-in functions. |
||||
|
||||
Control Structure |
||||
----------------- |
||||
|
||||
A control structure refers to all those things that control the flow of a |
||||
program - conditionals (i.e. ``if``/``elseif``/``else``), ``for``-loops, as |
||||
well as things like blocks. Control structures appear inside ``{% ... %}`` |
||||
blocks. |
||||
|
||||
For example, to display a list of users provided in a variable called |
||||
``users``, use the :doc:`for<tags/for>` tag: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
<h1>Members</h1> |
||||
<ul> |
||||
{% for user in users %} |
||||
<li>{{ user.username|e }}</li> |
||||
{% endfor %} |
||||
</ul> |
||||
|
||||
The :doc:`if<tags/if>` tag can be used to test an expression: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if users|length > 0 %} |
||||
<ul> |
||||
{% for user in users %} |
||||
<li>{{ user.username|e }}</li> |
||||
{% endfor %} |
||||
</ul> |
||||
{% endif %} |
||||
|
||||
Go to the :doc:`tags<tags/index>` page to learn more about the built-in tags. |
||||
|
||||
Comments |
||||
-------- |
||||
|
||||
To comment-out part of a line in a template, use the comment syntax ``{# ... |
||||
#}``. This is useful for debugging or to add information for other template |
||||
designers or yourself: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# note: disabled template because we no longer use this |
||||
{% for user in users %} |
||||
... |
||||
{% endfor %} |
||||
#} |
||||
|
||||
Including other Templates |
||||
------------------------- |
||||
|
||||
The :doc:`include<tags/include>` tag is useful to include a template and |
||||
return the rendered content of that template into the current one: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% include 'sidebar.html' %} |
||||
|
||||
Per default included templates are passed the current context. |
||||
|
||||
The context that is passed to the included template includes variables defined |
||||
in the template: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% for box in boxes %} |
||||
{% include "render_box.html" %} |
||||
{% endfor %} |
||||
|
||||
The included template ``render_box.html`` is able to access ``box``. |
||||
|
||||
The filename of the template depends on the template loader. For instance, the |
||||
``Twig_Loader_Filesystem`` allows you to access other templates by giving the |
||||
filename. You can access templates in subdirectories with a slash: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% include "sections/articles/sidebar.html" %} |
||||
|
||||
This behavior depends on the application embedding Twig. |
||||
|
||||
Template Inheritance |
||||
-------------------- |
||||
|
||||
The most powerful part of Twig is template inheritance. Template inheritance |
||||
allows you to build a base "skeleton" template that contains all the common |
||||
elements of your site and defines **blocks** that child templates can |
||||
override. |
||||
|
||||
Sounds complicated but is very basic. It's easiest to understand it by |
||||
starting with an example. |
||||
|
||||
Let's define a base template, ``base.html``, which defines a simple HTML |
||||
skeleton document that you might use for a simple two-column page: |
||||
|
||||
.. code-block:: html+jinja |
||||
|
||||
<!DOCTYPE html> |
||||
<html> |
||||
<head> |
||||
{% block head %} |
||||
<link rel="stylesheet" href="style.css" /> |
||||
<title>{% block title %}{% endblock %} - My Webpage</title> |
||||
{% endblock %} |
||||
</head> |
||||
<body> |
||||
<div id="content">{% block content %}{% endblock %}</div> |
||||
<div id="footer"> |
||||
{% block footer %} |
||||
© Copyright 2011 by <a href="http://domain.invalid/">you</a>. |
||||
{% endblock %} |
||||
</div> |
||||
</body> |
||||
</html> |
||||
|
||||
In this example, the :doc:`block<tags/block>` tags define four blocks that |
||||
child templates can fill in. All the ``block`` tag does is to tell the |
||||
template engine that a child template may override those portions of the |
||||
template. |
||||
|
||||
A child template might look like this: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% extends "base.html" %} |
||||
|
||||
{% block title %}Index{% endblock %} |
||||
{% block head %} |
||||
{{ parent() }} |
||||
<style type="text/css"> |
||||
.important { color: #336699; } |
||||
</style> |
||||
{% endblock %} |
||||
{% block content %} |
||||
<h1>Index</h1> |
||||
<p class="important"> |
||||
Welcome on my awesome homepage. |
||||
</p> |
||||
{% endblock %} |
||||
|
||||
The :doc:`extends<tags/extends>` tag is the key here. It tells the template |
||||
engine that this template "extends" another template. When the template system |
||||
evaluates this template, first it locates the parent. The extends tag should |
||||
be the first tag in the template. |
||||
|
||||
Note that since the child template doesn't define the ``footer`` block, the |
||||
value from the parent template is used instead. |
||||
|
||||
It's possible to render the contents of the parent block by using the |
||||
:doc:`parent<functions/parent>` function. This gives back the results of the |
||||
parent block: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% block sidebar %} |
||||
<h3>Table Of Contents</h3> |
||||
... |
||||
{{ parent() }} |
||||
{% endblock %} |
||||
|
||||
.. tip:: |
||||
|
||||
The documentation page for the :doc:`extends<tags/extends>` tag describes |
||||
more advanced features like block nesting, scope, dynamic inheritance, and |
||||
conditional inheritance. |
||||
|
||||
.. note:: |
||||
|
||||
Twig also supports multiple inheritance with the so called horizontal reuse |
||||
with the help of the :doc:`use<tags/use>` tag. This is an advanced feature |
||||
hardly ever needed in regular templates. |
||||
|
||||
HTML Escaping |
||||
------------- |
||||
|
||||
When generating HTML from templates, there's always a risk that a variable |
||||
will include characters that affect the resulting HTML. There are two |
||||
approaches: manually escaping each variable or automatically escaping |
||||
everything by default. |
||||
|
||||
Twig supports both, automatic escaping is enabled by default. |
||||
|
||||
.. note:: |
||||
|
||||
Automatic escaping is only supported if the *escaper* extension has been |
||||
enabled (which is the default). |
||||
|
||||
Working with Manual Escaping |
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
If manual escaping is enabled it's **your** responsibility to escape variables |
||||
if needed. What to escape? If you have a variable that *may* include any of |
||||
the following chars (``>``, ``<``, ``&``, or ``"``) you **have to** escape it |
||||
unless the variable contains well-formed and trusted HTML. Escaping works by |
||||
piping the variable through the :doc:`escape<filters/escape>` or ``e`` filter: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ user.username|e }} |
||||
{{ user.username|e('js') }} |
||||
|
||||
Working with Automatic Escaping |
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
Whether automatic escaping is enabled or not, you can mark a section of a |
||||
template to be escaped or not by using the :doc:`autoescape<tags/autoescape>` |
||||
tag: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% autoescape true %} |
||||
Everything will be automatically escaped in this block |
||||
{% endautoescape %} |
||||
|
||||
Escaping |
||||
-------- |
||||
|
||||
It is sometimes desirable or even necessary to have Twig ignore parts it would |
||||
otherwise handle as variables or blocks. For example if the default syntax is |
||||
used and you want to use ``{{`` as raw string in the template and not start a |
||||
variable you have to use a trick. |
||||
|
||||
The easiest way is to output the variable delimiter (``{{``) by using a variable |
||||
expression: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ '{{' }} |
||||
|
||||
For bigger sections it makes sense to mark a block :doc:`raw<tags/raw>`. |
||||
|
||||
Macros |
||||
------ |
||||
|
||||
Macros are comparable with functions in regular programming languages. They |
||||
are useful to put often used HTML idioms into reusable elements to not repeat |
||||
yourself. |
||||
|
||||
A macro is defined via the :doc:`macro<tags/macro>` tag. Here is a small |
||||
example of a macro that renders a form element: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% macro input(name, value, type, size) %} |
||||
<input type="{{ type|default('text') }}" name="{{ name }}" value="{{ value|e }}" size="{{ size|default(20) }}" /> |
||||
{% endmacro %} |
||||
|
||||
Macros can be defined in any template, and need to be "imported" before being |
||||
used via the :doc:`import<tags/import>` tag: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% import "forms.html" as forms %} |
||||
|
||||
<p>{{ forms.input('username') }}</p> |
||||
|
||||
Alternatively you can import names from the template into the current |
||||
namespace via the :doc:`from<tags/from>` tag: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% from 'forms.html' import input as input_field, textarea %} |
||||
|
||||
<dl> |
||||
<dt>Username</dt> |
||||
<dd>{{ input_field('username') }}</dd> |
||||
<dt>Password</dt> |
||||
<dd>{{ input_field('password', type='password') }}</dd> |
||||
</dl> |
||||
<p>{{ textarea('comment') }}</p> |
||||
|
||||
Expressions |
||||
----------- |
||||
|
||||
Twig allows expressions everywhere. These work very similar to regular PHP and |
||||
even if you're not working with PHP you should feel comfortable with it. |
||||
|
||||
.. note:: |
||||
|
||||
The operator precedence is as follows, with the lowest-precedence |
||||
operators listed first: ``&``, ``^``, ``|``, ``or``, ``and``, ``==``, |
||||
``!=``, ``<``, ``>``, ``>=``, ``<=``, ``in``, ``..``, ``+``, ``-``, ``~``, |
||||
``*``, ``/``, ``//``, ``%``, ``is``, and ``**``. |
||||
|
||||
Literals |
||||
~~~~~~~~ |
||||
|
||||
.. versionadded:: 1.5 |
||||
Support for hash keys as names and expressions was added in Twig 1.5. |
||||
|
||||
The simplest form of expressions are literals. Literals are representations |
||||
for PHP types such as strings, numbers, and arrays. The following literals |
||||
exist: |
||||
|
||||
* ``"Hello World"``: Everything between two double or single quotes is a |
||||
string. They are useful whenever you need a string in the template (for |
||||
example as arguments to function calls, filters or just to extend or |
||||
include a template). |
||||
|
||||
* ``42`` / ``42.23``: Integers and floating point numbers are created by just |
||||
writing the number down. If a dot is present the number is a float, |
||||
otherwise an integer. |
||||
|
||||
* ``["foo", "bar"]``: Arrays are defined by a sequence of expressions |
||||
separated by a comma (``,``) and wrapped with squared brackets (``[]``). |
||||
|
||||
* ``{"foo": "bar"}``: Hashes are defined by a list of keys and values |
||||
separated by a comma (``,``) and wrapped with curly braces (``{}``): |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# keys as string #} |
||||
{ 'foo': 'foo', 'bar': 'bar' } |
||||
|
||||
{# keys as names (equivalent to the previous hash) -- as of Twig 1.5 #} |
||||
{ foo: 'foo', bar: 'bar' } |
||||
|
||||
{# keys as integer #} |
||||
{ 2: 'foo', 4: 'bar' } |
||||
|
||||
{# keys as expressions (the expression must be enclosed into parentheses) -- as of Twig 1.5 #} |
||||
{ (1 + 1): 'foo', (a ~ 'b'): 'bar' } |
||||
|
||||
* ``true`` / ``false``: ``true`` represents the true value, ``false`` |
||||
represents the false value. |
||||
|
||||
* ``null``: ``null`` represents no specific value. This is the value returned |
||||
when a variable does not exist. ``none`` is an alias for ``null``. |
||||
|
||||
Arrays and hashes can be nested: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% set foo = [1, {"foo": "bar"}] %} |
||||
|
||||
Math |
||||
~~~~ |
||||
|
||||
Twig allows you to calculate with values. This is rarely useful in templates |
||||
but exists for completeness' sake. The following operators are supported: |
||||
|
||||
* ``+``: Adds two objects together (the operands are casted to numbers). ``{{ |
||||
1 + 1 }}`` is ``2``. |
||||
|
||||
* ``-``: Substracts the second number from the first one. ``{{ 3 - 2 }}`` is |
||||
``1``. |
||||
|
||||
* ``/``: Divides two numbers. The return value will be a floating point |
||||
number. ``{{ 1 / 2 }}`` is ``{{ 0.5 }}``. |
||||
|
||||
* ``%``: Calculates the remainder of an integer division. ``{{ 11 % 7 }}`` is |
||||
``4``. |
||||
|
||||
* ``//``: Divides two numbers and returns the truncated integer result. ``{{ |
||||
20 // 7 }}`` is ``2``. |
||||
|
||||
* ``*``: Multiplies the left operand with the right one. ``{{ 2 * 2 }}`` would |
||||
return ``4``. |
||||
|
||||
* ``**``: Raises the left operand to the power of the right operand. ``{{ 2 ** |
||||
3 }}`` would return ``8``. |
||||
|
||||
Logic |
||||
~~~~~ |
||||
|
||||
You can combine multiple expressions with the following operators: |
||||
|
||||
* ``and``: Returns true if the left and the right operands are both true. |
||||
|
||||
* ``or``: Returns true if the left or the right operand is true. |
||||
|
||||
* ``not``: Negates a statement. |
||||
|
||||
* ``(expr)``: Groups an expression. |
||||
|
||||
Comparisons |
||||
~~~~~~~~~~~ |
||||
|
||||
The following comparison operators are supported in any expression: ``==``, |
||||
``!=``, ``<``, ``>``, ``>=``, and ``<=``. |
||||
|
||||
Containment Operator |
||||
~~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
The ``in`` operator performs containment test. |
||||
|
||||
It returns ``true`` if the left operand is contained in the right: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# returns true #} |
||||
|
||||
{{ 1 in [1, 2, 3] }} |
||||
|
||||
{{ 'cd' in 'abcde' }} |
||||
|
||||
.. tip:: |
||||
|
||||
You can use this filter to perform a containment test on strings, arrays, |
||||
or objects implementing the ``Traversable`` interface. |
||||
|
||||
To perform a negative test, use the ``not in`` operator: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if 1 not in [1, 2, 3] %} |
||||
|
||||
{# is equivalent to #} |
||||
{% if not (1 in [1, 2, 3]) %} |
||||
|
||||
Test Operator |
||||
~~~~~~~~~~~~~ |
||||
|
||||
The ``is`` operator performs tests. Tests can be used to test a variable against |
||||
a common expression. The right operand is name of the test: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# find out if a variable is odd #} |
||||
|
||||
{{ name is odd }} |
||||
|
||||
Tests can accept arguments too: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if loop.index is divisibleby(3) %} |
||||
|
||||
Tests can be negated by using the ``is not`` operator: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if loop.index is not divisibleby(3) %} |
||||
|
||||
{# is equivalent to #} |
||||
{% if not (loop.index is divisibleby(3)) %} |
||||
|
||||
Go to the :doc:`tests<tests/index>` page to learn more about the built-in |
||||
tests. |
||||
|
||||
Other Operators |
||||
~~~~~~~~~~~~~~~ |
||||
|
||||
The following operators are very useful but don't fit into any of the other |
||||
categories: |
||||
|
||||
* ``..``: Creates a sequence based on the operand before and after the |
||||
operator (this is just syntactic sugar for the :doc:`range<functions/range>` |
||||
function). |
||||
|
||||
* ``|``: Applies a filter. |
||||
|
||||
* ``~``: Converts all operands into strings and concatenates them. ``{{ "Hello |
||||
" ~ name ~ "!" }}`` would return (assuming ``name`` is ``'John'``) ``Hello |
||||
John!``. |
||||
|
||||
* ``.``, ``[]``: Gets an attribute of an object. |
||||
|
||||
* ``?:``: The PHP ternary operator: ``{{ foo ? 'yes' : 'no' }}`` |
||||
|
||||
String Interpolation |
||||
~~~~~~~~~~~~~~~~~~~~ |
||||
|
||||
.. versionadded:: 1.5 |
||||
String interpolation was added in Twig 1.5. |
||||
|
||||
String interpolation (`#{expression}`) allows any valid expression to appear |
||||
within a string. The result of evaluating that expression is inserted into the |
||||
string: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ "foo #{bar} baz" }} |
||||
{{ "foo #{1 + 2} baz" }} |
||||
|
||||
Whitespace Control |
||||
------------------ |
||||
|
||||
.. versionadded:: 1.1 |
||||
Tag level whitespace control was added in Twig 1.1. |
||||
|
||||
The first newline after a template tag is removed automatically (like in PHP.) |
||||
Whitespace is not further modified by the template engine, so each whitespace |
||||
(spaces, tabs, newlines etc.) is returned unchanged. |
||||
|
||||
Use the ``spaceless`` tag to remove whitespace *between HTML tags*: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% spaceless %} |
||||
<div> |
||||
<strong>foo</strong> |
||||
</div> |
||||
{% endspaceless %} |
||||
|
||||
{# output will be <div><strong>foo</strong></div> #} |
||||
|
||||
In addition to the spaceless tag you can also control whitespace on a per tag |
||||
level. By using the whitespace control modifier on your tags, you can trim |
||||
leading and or trailing whitespace: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% set value = 'no spaces' %} |
||||
{#- No leading/trailing whitespace -#} |
||||
{%- if true -%} |
||||
{{- value -}} |
||||
{%- endif -%} |
||||
|
||||
{# output 'no spaces' #} |
||||
|
||||
The above sample shows the default whitespace control modifier, and how you can |
||||
use it to remove whitespace around tags. Trimming space will consume all whitespace |
||||
for that side of the tag. It is possible to use whitespace trimming on one side |
||||
of a tag: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% set value = 'no spaces' %} |
||||
<li> {{- value }} </li> |
||||
|
||||
{# outputs '<li>no spaces </li>' #} |
||||
|
||||
Extensions |
||||
---------- |
||||
|
||||
Twig can be easily extended. |
||||
|
||||
If you are looking for new tags, filters, or functions, have a look at the Twig official |
||||
`extension repository`_. |
||||
|
||||
If you want to create your own, read :doc:`extensions`. |
||||
|
||||
.. _`Twig bundle`: https://github.com/Anomareh/PHP-Twig.tmbundle |
||||
.. _`Jinja syntax plugin`: http://jinja.pocoo.org/2/documentation/integration |
||||
.. _`Twig syntax plugin`: http://plugins.netbeans.org/plugin/37069/php-twig |
||||
.. _`Twig plugin`: https://github.com/pulse00/Twig-Eclipse-Plugin |
||||
.. _`Twig language definition`: https://github.com/gabrielcorpse/gedit-twig-template-language |
||||
.. _`extension repository`: http://github.com/fabpot/Twig-extensions |
||||
.. _`Twig syntax mode`: https://github.com/bobthecow/Twig-HTML.mode |
@ -1,11 +0,0 @@ |
||||
``constant`` |
||||
============ |
||||
|
||||
``constant`` checks if a variable has the exact same value as a constant. You |
||||
can use either global constants or class constants: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if post.status is constant('Post::PUBLISHED') %} |
||||
the status attribute is exactly the same as Post::PUBLISHED |
||||
{% endif %} |
@ -1,30 +0,0 @@ |
||||
``defined`` |
||||
=========== |
||||
|
||||
``defined`` checks if a variable is defined in the current context. This is very |
||||
useful if you use the ``strict_variables`` option: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# defined works with variable names #} |
||||
{% if foo is defined %} |
||||
... |
||||
{% endif %} |
||||
|
||||
{# and attributes on variables names #} |
||||
{% if foo.bar is defined %} |
||||
... |
||||
{% endif %} |
||||
|
||||
{% if foo['bar'] is defined %} |
||||
... |
||||
{% endif %} |
||||
|
||||
When using the ``defined`` test on an expression that uses variables in some |
||||
method calls, be sure that they are all defined first: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if var is defined and foo.method(var) is defined %} |
||||
... |
||||
{% endif %} |
@ -1,10 +0,0 @@ |
||||
``divisibleby`` |
||||
=============== |
||||
|
||||
``divisibleby`` checks if a variable is divisible by a number: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if loop.index is divisibleby(3) %} |
||||
... |
||||
{% endif %} |
@ -1,11 +0,0 @@ |
||||
``empty`` |
||||
========= |
||||
|
||||
``empty`` checks if a variable is empty: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{# evaluates to true if the foo variable is null, false, or the empty string #} |
||||
{% if foo is empty %} |
||||
... |
||||
{% endif %} |
@ -1,10 +0,0 @@ |
||||
``even`` |
||||
======== |
||||
|
||||
``even`` returns ``true`` if the given number is even: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ var is even }} |
||||
|
||||
.. seealso:: :doc:`odd<../tests/odd>` |
@ -1,14 +0,0 @@ |
||||
Tests |
||||
===== |
||||
|
||||
.. toctree:: |
||||
:maxdepth: 1 |
||||
|
||||
divisibleby |
||||
null |
||||
even |
||||
odd |
||||
sameas |
||||
constant |
||||
defined |
||||
empty |
@ -1,12 +0,0 @@ |
||||
``null`` |
||||
======== |
||||
|
||||
``null`` returns ``true`` if the variable is ``null``: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ var is null }} |
||||
|
||||
.. note:: |
||||
|
||||
``none`` is an alias for ``null``. |
@ -1,10 +0,0 @@ |
||||
``odd`` |
||||
======= |
||||
|
||||
``odd`` returns ``true`` if the given number is odd: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{{ var is odd }} |
||||
|
||||
.. seealso:: :doc:`even<../tests/even>` |
@ -1,11 +0,0 @@ |
||||
``sameas`` |
||||
========== |
||||
|
||||
``sameas`` checks if a variable points to the same memory address than another |
||||
variable: |
||||
|
||||
.. code-block:: jinja |
||||
|
||||
{% if foo.attribute is sameas(false) %} |
||||
the foo attribute really is the ``false`` PHP value |
||||
{% endif %} |
@ -1,30 +0,0 @@ |
||||
*.sw* |
||||
.deps |
||||
Makefile |
||||
Makefile.fragments |
||||
Makefile.global |
||||
Makefile.objects |
||||
acinclude.m4 |
||||
aclocal.m4 |
||||
build/ |
||||
config.cache |
||||
config.guess |
||||
config.h |
||||
config.h.in |
||||
config.log |
||||
config.nice |
||||
config.status |
||||
config.sub |
||||
configure |
||||
configure.in |
||||
install-sh |
||||
libtool |
||||
ltmain.sh |
||||
missing |
||||
mkinstalldirs |
||||
run-tests.php |
||||
twig.loT |
||||
.libs/ |
||||
modules/ |
||||
twig.la |
||||
twig.lo |
@ -1,22 +0,0 @@ |
||||
Copyright (c) 2011, Derick Rethans <derick@derickrethans.nl> |
||||
All rights reserved. |
||||
|
||||
Redistribution and use in source and binary forms, with or without |
||||
modification, are permitted provided that the following conditions are met: |
||||
|
||||
* Redistributions of source code must retain the above copyright notice, |
||||
this list of conditions and the following disclaimer. |
||||
* Redistributions in binary form must reproduce the above copyright |
||||
notice, this list of conditions and the following disclaimer in the |
||||
documentation and/or other materials provided with the distribution. |
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE |
||||
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
||||
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
||||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
||||
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
@ -1,8 +0,0 @@ |
||||
dnl config.m4 for extension twig |
||||
|
||||
PHP_ARG_ENABLE(twig, whether to enable twig support, |
||||
[ --enable-twig Enable twig support]) |
||||
|
||||
if test "$PHP_TWIG" != "no"; then |
||||
PHP_NEW_EXTENSION(twig, twig.c, $ext_shared) |
||||
fi |
@ -1,8 +0,0 @@ |
||||
// vim:ft=javascript |
||||
|
||||
ARG_ENABLE("twig", "Twig support", "no"); |
||||
|
||||
if (PHP_TWIG != "no") { |
||||
AC_DEFINE('HAVE_TWIG', 1); |
||||
EXTENSION('twig', 'twig.c'); |
||||
} |
@ -1,49 +0,0 @@ |
||||
/*
|
||||
+----------------------------------------------------------------------+ |
||||
| Twig Extension | |
||||
+----------------------------------------------------------------------+ |
||||
| Copyright (c) 2011 Derick Rethans | |
||||
+----------------------------------------------------------------------+ |
||||
| Redistribution and use in source and binary forms, with or without | |
||||
| modification, are permitted provided that the conditions mentioned | |
||||
| in the accompanying LICENSE file are met (BSD, revised). | |
||||
+----------------------------------------------------------------------+ |
||||
| Author: Derick Rethans <derick@derickrethans.nl> | |
||||
+----------------------------------------------------------------------+ |
||||
*/ |
||||
|
||||
#ifndef PHP_TWIG_H |
||||
#define PHP_TWIG_H |
||||
|
||||
#define PHP_TWIG_VERSION "1.6.4" |
||||
|
||||
#include "php.h" |
||||
|
||||
extern zend_module_entry twig_module_entry; |
||||
#define phpext_twig_ptr &twig_module_entry |
||||
|
||||
#ifdef PHP_WIN32 |
||||
#define PHP_TWIG_API __declspec(dllexport) |
||||
#else |
||||
#define PHP_TWIG_API |
||||
#endif |
||||
|
||||
#ifdef ZTS |
||||
#include "TSRM.h" |
||||
#endif |
||||
|
||||
PHP_FUNCTION(twig_template_get_attributes); |
||||
|
||||
PHP_MINIT_FUNCTION(twig); |
||||
PHP_MSHUTDOWN_FUNCTION(twig); |
||||
PHP_RINIT_FUNCTION(twig); |
||||
PHP_RSHUTDOWN_FUNCTION(twig); |
||||
PHP_MINFO_FUNCTION(twig); |
||||
|
||||
#ifdef ZTS |
||||
#define TWIG_G(v) TSRMG(twig_globals_id, zend_twig_globals *, v) |
||||
#else |
||||
#define TWIG_G(v) (twig_globals.v) |
||||
#endif |
||||
|
||||
#endif |
File diff suppressed because it is too large
Load Diff
@ -1,176 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) 2009 Fabien Potencier |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
|
||||
/** |
||||
* Twig base exception. |
||||
* |
||||
* @package twig |
||||
* @author Fabien Potencier <fabien@symfony.com> |
||||
*/ |
||||
class Twig_Error extends Exception |
||||
{ |
||||
protected $lineno; |
||||
protected $filename; |
||||
protected $rawMessage; |
||||
protected $previous; |
||||
|
||||
/** |
||||
* Constructor. |
||||
* |
||||
* @param string $message The error message |
||||
* @param integer $lineno The template line where the error occurred |
||||
* @param string $filename The template file name where the error occurred |
||||
* @param Exception $previous The previous exception |
||||
*/ |
||||
public function __construct($message, $lineno = -1, $filename = null, Exception $previous = null) |
||||
{ |
||||
if (-1 === $lineno || null === $filename) { |
||||
if ($trace = $this->getTemplateTrace()) { |
||||
if (-1 === $lineno) { |
||||
$lineno = $this->guessTemplateLine($trace); |
||||
} |
||||
|
||||
if (null === $filename) { |
||||
$filename = $trace['object']->getTemplateName(); |
||||
} |
||||
} |
||||
} |
||||
|
||||
$this->lineno = $lineno; |
||||
$this->filename = $filename; |
||||
$this->rawMessage = $message; |
||||
|
||||
$this->updateRepr(); |
||||
|
||||
if (version_compare(PHP_VERSION, '5.3.0', '<')) { |
||||
$this->previous = $previous; |
||||
parent::__construct($this->message); |
||||
} else { |
||||
parent::__construct($this->message, 0, $previous); |
||||
} |
||||
} |
||||
|
||||
/** |
||||
* Gets the raw message. |
||||
* |
||||
* @return string The raw message |
||||
*/ |
||||
public function getRawMessage() |
||||
{ |
||||
return $this->rawMessage; |
||||
} |
||||
|
||||
/** |
||||
* Gets the filename where the error occurred. |
||||
* |
||||
* @return string The filename |
||||
*/ |
||||
public function getTemplateFile() |
||||
{ |
||||
return $this->filename; |
||||
} |
||||
|
||||
/** |
||||
* Sets the filename where the error occurred. |
||||
* |
||||
* @param string $filename The filename |
||||
*/ |
||||
public function setTemplateFile($filename) |
||||
{ |
||||
$this->filename = $filename; |
||||
|
||||
$this->updateRepr(); |
||||
} |
||||
|
||||
/** |
||||
* Gets the template line where the error occurred. |
||||
* |
||||
* @return integer The template line |
||||
*/ |
||||
public function getTemplateLine() |
||||
{ |
||||
return $this->lineno; |
||||
} |
||||
|
||||
/** |
||||
* Sets the template line where the error occurred. |
||||
* |
||||
* @param integer $lineno The template line |
||||
*/ |
||||
public function setTemplateLine($lineno) |
||||
{ |
||||
$this->lineno = $lineno; |
||||
|
||||
$this->updateRepr(); |
||||
} |
||||
|
||||
/** |
||||
* For PHP < 5.3.0, provides access to the getPrevious() method. |
||||
* |
||||
* @param string $method The method name |
||||
* @param array $arguments The parameters to be passed to the method |
||||
* |
||||
* @return Exception The previous exception or null |
||||
*/ |
||||
public function __call($method, $arguments) |
||||
{ |
||||
if ('getprevious' == strtolower($method)) { |
||||
return $this->previous; |
||||
} |
||||
|
||||
throw new BadMethodCallException(sprintf('Method "Twig_Error::%s()" does not exist.', $method)); |
||||
} |
||||
|
||||
protected function updateRepr() |
||||
{ |
||||
$this->message = $this->rawMessage; |
||||
|
||||
$dot = false; |
||||
if ('.' === substr($this->message, -1)) { |
||||
$this->message = substr($this->message, 0, -1); |
||||
$dot = true; |
||||
} |
||||
|
||||
if (null !== $this->filename) { |
||||
$this->message .= sprintf(' in %s', is_string($this->filename) ? '"'.$this->filename.'"' : json_encode($this->filename)); |
||||
} |
||||
|
||||
if ($this->lineno >= 0) { |
||||
$this->message .= sprintf(' at line %d', $this->lineno); |
||||
} |
||||
|
||||
if ($dot) { |
||||
$this->message .= '.'; |
||||
} |
||||
} |
||||
|
||||
protected function getTemplateTrace() |
||||
{ |
||||
foreach (debug_backtrace() as $trace) { |
||||
if (isset($trace['object']) && $trace['object'] instanceof Twig_Template) { |
||||
return $trace; |
||||
} |
||||
} |
||||
} |
||||
|
||||
protected function guessTemplateLine($trace) |
||||
{ |
||||
if (isset($trace['line'])) { |
||||
foreach ($trace['object']->getDebugInfo() as $codeLine => $templateLine) { |
||||
if ($codeLine <= $trace['line']) { |
||||
return $templateLine; |
||||
} |
||||
} |
||||
} |
||||
|
||||
return -1; |
||||
} |
||||
} |
@ -1,20 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) 2010 Fabien Potencier |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
|
||||
/** |
||||
* Exception thrown when an error occurs during template loading. |
||||
* |
||||
* @package twig |
||||
* @author Fabien Potencier <fabien@symfony.com> |
||||
*/ |
||||
class Twig_Error_Loader extends Twig_Error |
||||
{ |
||||
} |
@ -1,38 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) 2010 Fabien Potencier |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
|
||||
/** |
||||
* Represents a template filter. |
||||
* |
||||
* @package twig |
||||
* @author Fabien Potencier <fabien@symfony.com> |
||||
*/ |
||||
interface Twig_FilterInterface |
||||
{ |
||||
/** |
||||
* Compiles a filter. |
||||
* |
||||
* @return string The PHP code for the filter |
||||
*/ |
||||
function compile(); |
||||
|
||||
function needsEnvironment(); |
||||
|
||||
function needsContext(); |
||||
|
||||
function getSafe(Twig_Node $filterArgs); |
||||
|
||||
function getPreEscape(); |
||||
|
||||
function setArguments($arguments); |
||||
|
||||
function getArguments(); |
||||
} |
@ -1,100 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) 2011 Fabien Potencier |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
|
||||
/** |
||||
* Loads templates from other loaders. |
||||
* |
||||
* @package twig |
||||
* @author Fabien Potencier <fabien@symfony.com> |
||||
*/ |
||||
class Twig_Loader_Chain implements Twig_LoaderInterface |
||||
{ |
||||
protected $loaders; |
||||
|
||||
/** |
||||
* Constructor. |
||||
* |
||||
* @param Twig_LoaderInterface[] $loaders An array of loader instances |
||||
*/ |
||||
public function __construct(array $loaders = array()) |
||||
{ |
||||
$this->loaders = array(); |
||||
foreach ($loaders as $loader) { |
||||
$this->addLoader($loader); |
||||
} |
||||
} |
||||
|
||||
/** |
||||
* Adds a loader instance. |
||||
* |
||||
* @param Twig_LoaderInterface $loader A Loader instance |
||||
*/ |
||||
public function addLoader(Twig_LoaderInterface $loader) |
||||
{ |
||||
$this->loaders[] = $loader; |
||||
} |
||||
|
||||
/** |
||||
* Gets the source code of a template, given its name. |
||||
* |
||||
* @param string $name The name of the template to load |
||||
* |
||||
* @return string The template source code |
||||
*/ |
||||
public function getSource($name) |
||||
{ |
||||
foreach ($this->loaders as $loader) { |
||||
try { |
||||
return $loader->getSource($name); |
||||
} catch (Twig_Error_Loader $e) { |
||||
} |
||||
} |
||||
|
||||
throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name)); |
||||
} |
||||
|
||||
/** |
||||
* Gets the cache key to use for the cache for a given template name. |
||||
* |
||||
* @param string $name The name of the template to load |
||||
* |
||||
* @return string The cache key |
||||
*/ |
||||
public function getCacheKey($name) |
||||
{ |
||||
foreach ($this->loaders as $loader) { |
||||
try { |
||||
return $loader->getCacheKey($name); |
||||
} catch (Twig_Error_Loader $e) { |
||||
} |
||||
} |
||||
|
||||
throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name)); |
||||
} |
||||
|
||||
/** |
||||
* Returns true if the template is still fresh. |
||||
* |
||||
* @param string $name The template name |
||||
* @param timestamp $time The last modification time of the cached template |
||||
*/ |
||||
public function isFresh($name, $time) |
||||
{ |
||||
foreach ($this->loaders as $loader) { |
||||
try { |
||||
return $loader->isFresh($name, $time); |
||||
} catch (Twig_Error_Loader $e) { |
||||
} |
||||
} |
||||
|
||||
throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name)); |
||||
} |
||||
} |
@ -1,152 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) 2009 Fabien Potencier |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
|
||||
/** |
||||
* Loads template from the filesystem. |
||||
* |
||||
* @package twig |
||||
* @author Fabien Potencier <fabien@symfony.com> |
||||
*/ |
||||
class Twig_Loader_Filesystem implements Twig_LoaderInterface |
||||
{ |
||||
protected $paths; |
||||
protected $cache; |
||||
|
||||
/** |
||||
* Constructor. |
||||
* |
||||
* @param string|array $paths A path or an array of paths where to look for templates |
||||
*/ |
||||
public function __construct($paths) |
||||
{ |
||||
$this->setPaths($paths); |
||||
} |
||||
|
||||
/** |
||||
* Returns the paths to the templates. |
||||
* |
||||
* @return array The array of paths where to look for templates |
||||
*/ |
||||
public function getPaths() |
||||
{ |
||||
return $this->paths; |
||||
} |
||||
|
||||
/** |
||||
* Sets the paths where templates are stored. |
||||
* |
||||
* @param string|array $paths A path or an array of paths where to look for templates |
||||
*/ |
||||
public function setPaths($paths) |
||||
{ |
||||
if (!is_array($paths)) { |
||||
$paths = array($paths); |
||||
} |
||||
|
||||
$this->paths = array(); |
||||
foreach ($paths as $path) { |
||||
$this->addPath($path); |
||||
} |
||||
} |
||||
|
||||
/** |
||||
* Adds a path where templates are stored. |
||||
* |
||||
* @param string $path A path where to look for templates |
||||
*/ |
||||
public function addPath($path) |
||||
{ |
||||
// invalidate the cache |
||||
$this->cache = array(); |
||||
|
||||
if (!is_dir($path)) { |
||||
throw new Twig_Error_Loader(sprintf('The "%s" directory does not exist.', $path)); |
||||
} |
||||
|
||||
$this->paths[] = $path; |
||||
} |
||||
|
||||
/** |
||||
* Gets the source code of a template, given its name. |
||||
* |
||||
* @param string $name The name of the template to load |
||||
* |
||||
* @return string The template source code |
||||
*/ |
||||
public function getSource($name) |
||||
{ |
||||
return file_get_contents($this->findTemplate($name)); |
||||
} |
||||
|
||||
/** |
||||
* Gets the cache key to use for the cache for a given template name. |
||||
* |
||||
* @param string $name The name of the template to load |
||||
* |
||||
* @return string The cache key |
||||
*/ |
||||
public function getCacheKey($name) |
||||
{ |
||||
return $this->findTemplate($name); |
||||
} |
||||
|
||||
/** |
||||
* Returns true if the template is still fresh. |
||||
* |
||||
* @param string $name The template name |
||||
* @param timestamp $time The last modification time of the cached template |
||||
*/ |
||||
public function isFresh($name, $time) |
||||
{ |
||||
return filemtime($this->findTemplate($name)) < $time; |
||||
} |
||||
|
||||
protected function findTemplate($name) |
||||
{ |
||||
// normalize name |
||||
$name = preg_replace('#/{2,}#', '/', strtr($name, '\\', '/')); |
||||
|
||||
if (isset($this->cache[$name])) { |
||||
return $this->cache[$name]; |
||||
} |
||||
|
||||
$this->validateName($name); |
||||
|
||||
foreach ($this->paths as $path) { |
||||
if (is_file($path.'/'.$name)) { |
||||
return $this->cache[$name] = $path.'/'.$name; |
||||
} |
||||
} |
||||
|
||||
throw new Twig_Error_Loader(sprintf('Unable to find template "%s" (looked into: %s).', $name, implode(', ', $this->paths))); |
||||
} |
||||
|
||||
protected function validateName($name) |
||||
{ |
||||
if (false !== strpos($name, "\0")) { |
||||
throw new Twig_Error_Loader('A template name cannot contain NUL bytes.'); |
||||
} |
||||
|
||||
$parts = explode('/', $name); |
||||
$level = 0; |
||||
foreach ($parts as $part) { |
||||
if ('..' === $part) { |
||||
--$level; |
||||
} elseif ('.' !== $part) { |
||||
++$level; |
||||
} |
||||
|
||||
if ($level < 0) { |
||||
throw new Twig_Error_Loader(sprintf('Looks like you try to load a template outside configured directories (%s).', $name)); |
||||
} |
||||
} |
||||
} |
||||
} |
@ -1,61 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) 2009 Fabien Potencier |
||||
* (c) 2009 Armin Ronacher |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
class Twig_Node_Expression_Filter extends Twig_Node_Expression |
||||
{ |
||||
public function __construct(Twig_NodeInterface $node, Twig_Node_Expression_Constant $filterName, Twig_NodeInterface $arguments, $lineno, $tag = null) |
||||
{ |
||||
parent::__construct(array('node' => $node, 'filter' => $filterName, 'arguments' => $arguments), array(), $lineno, $tag); |
||||
} |
||||
|
||||
public function compile(Twig_Compiler $compiler) |
||||
{ |
||||
$name = $this->getNode('filter')->getAttribute('value'); |
||||
|
||||
if (false === $filter = $compiler->getEnvironment()->getFilter($name)) { |
||||
$message = sprintf('The filter "%s" does not exist', $name); |
||||
if ($alternatives = $compiler->getEnvironment()->computeAlternatives($name, array_keys($compiler->getEnvironment()->getFilters()))) { |
||||
$message = sprintf('%s. Did you mean "%s"', $message, implode('", "', $alternatives)); |
||||
} |
||||
|
||||
throw new Twig_Error_Syntax($message, $this->getLine()); |
||||
} |
||||
|
||||
$this->compileFilter($compiler, $filter); |
||||
} |
||||
|
||||
protected function compileFilter(Twig_Compiler $compiler, Twig_FilterInterface $filter) |
||||
{ |
||||
$compiler |
||||
->raw($filter->compile().'(') |
||||
->raw($filter->needsEnvironment() ? '$this->env, ' : '') |
||||
->raw($filter->needsContext() ? '$context, ' : '') |
||||
; |
||||
|
||||
foreach ($filter->getArguments() as $argument) { |
||||
$compiler |
||||
->string($argument) |
||||
->raw(', ') |
||||
; |
||||
} |
||||
|
||||
$compiler->subcompile($this->getNode('node')); |
||||
|
||||
foreach ($this->getNode('arguments') as $node) { |
||||
$compiler |
||||
->raw(', ') |
||||
->subcompile($node) |
||||
; |
||||
} |
||||
|
||||
$compiler->raw(')'); |
||||
} |
||||
} |
@ -1,66 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) 2010 Fabien Potencier |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
class Twig_Node_Expression_Function extends Twig_Node_Expression |
||||
{ |
||||
public function __construct($name, Twig_NodeInterface $arguments, $lineno) |
||||
{ |
||||
parent::__construct(array('arguments' => $arguments), array('name' => $name), $lineno); |
||||
} |
||||
|
||||
public function compile(Twig_Compiler $compiler) |
||||
{ |
||||
$name = $this->getAttribute('name'); |
||||
|
||||
if (false === $function = $compiler->getEnvironment()->getFunction($name)) { |
||||
$message = sprintf('The function "%s" does not exist', $name); |
||||
if ($alternatives = $compiler->getEnvironment()->computeAlternatives($name, array_keys($compiler->getEnvironment()->getFunctions()))) { |
||||
$message = sprintf('%s. Did you mean "%s"', $message, implode('", "', $alternatives)); |
||||
} |
||||
|
||||
throw new Twig_Error_Syntax($message, $this->getLine()); |
||||
} |
||||
|
||||
$compiler->raw($function->compile().'('); |
||||
|
||||
$first = true; |
||||
|
||||
if ($function->needsEnvironment()) { |
||||
$compiler->raw('$this->env'); |
||||
$first = false; |
||||
} |
||||
|
||||
if ($function->needsContext()) { |
||||
if (!$first) { |
||||
$compiler->raw(', '); |
||||
} |
||||
$compiler->raw('$context'); |
||||
$first = false; |
||||
} |
||||
|
||||
foreach ($function->getArguments() as $argument) { |
||||
if (!$first) { |
||||
$compiler->raw(', '); |
||||
} |
||||
$compiler->string($argument); |
||||
$first = false; |
||||
} |
||||
|
||||
foreach ($this->getNode('arguments') as $node) { |
||||
if (!$first) { |
||||
$compiler->raw(', '); |
||||
} |
||||
$compiler->subcompile($node); |
||||
$first = false; |
||||
} |
||||
|
||||
$compiler->raw(')'); |
||||
} |
||||
} |
@ -1,54 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) 2010 Fabien Potencier |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
class Twig_Node_Expression_Test extends Twig_Node_Expression |
||||
{ |
||||
public function __construct(Twig_NodeInterface $node, $name, Twig_NodeInterface $arguments = null, $lineno) |
||||
{ |
||||
parent::__construct(array('node' => $node, 'arguments' => $arguments), array('name' => $name), $lineno); |
||||
} |
||||
|
||||
public function compile(Twig_Compiler $compiler) |
||||
{ |
||||
$name = $this->getAttribute('name'); |
||||
$testMap = $compiler->getEnvironment()->getTests(); |
||||
if (!isset($testMap[$name])) { |
||||
$message = sprintf('The test "%s" does not exist', $name); |
||||
if ($alternatives = $compiler->getEnvironment()->computeAlternatives($name, array_keys($compiler->getEnvironment()->getTests()))) { |
||||
$message = sprintf('%s. Did you mean "%s"', $message, implode('", "', $alternatives)); |
||||
} |
||||
|
||||
throw new Twig_Error_Syntax($message, $this->getLine()); |
||||
} |
||||
|
||||
$name = $this->getAttribute('name'); |
||||
$node = $this->getNode('node'); |
||||
|
||||
$compiler |
||||
->raw($testMap[$name]->compile().'(') |
||||
->subcompile($node) |
||||
; |
||||
|
||||
if (null !== $this->getNode('arguments')) { |
||||
$compiler->raw(', '); |
||||
|
||||
$max = count($this->getNode('arguments')) - 1; |
||||
foreach ($this->getNode('arguments') as $i => $arg) { |
||||
$compiler->subcompile($arg); |
||||
|
||||
if ($i != $max) { |
||||
$compiler->raw(', '); |
||||
} |
||||
} |
||||
} |
||||
|
||||
$compiler->raw(')'); |
||||
} |
||||
} |
@ -1,89 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) 2009 Fabien Potencier |
||||
* (c) 2009 Armin Ronacher |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
|
||||
/** |
||||
* Loops over each item of a sequence. |
||||
* |
||||
* <pre> |
||||
* <ul> |
||||
* {% for user in users %} |
||||
* <li>{{ user.username|e }}</li> |
||||
* {% endfor %} |
||||
* </ul> |
||||
* </pre> |
||||
*/ |
||||
class Twig_TokenParser_For extends Twig_TokenParser |
||||
{ |
||||
/** |
||||
* Parses a token and returns a node. |
||||
* |
||||
* @param Twig_Token $token A Twig_Token instance |
||||
* |
||||
* @return Twig_NodeInterface A Twig_NodeInterface instance |
||||
*/ |
||||
public function parse(Twig_Token $token) |
||||
{ |
||||
$lineno = $token->getLine(); |
||||
$targets = $this->parser->getExpressionParser()->parseAssignmentExpression(); |
||||
$this->parser->getStream()->expect(Twig_Token::OPERATOR_TYPE, 'in'); |
||||
$seq = $this->parser->getExpressionParser()->parseExpression(); |
||||
|
||||
$ifexpr = null; |
||||
if ($this->parser->getStream()->test(Twig_Token::NAME_TYPE, 'if')) { |
||||
$this->parser->getStream()->next(); |
||||
$ifexpr = $this->parser->getExpressionParser()->parseExpression(); |
||||
} |
||||
|
||||
$this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); |
||||
$body = $this->parser->subparse(array($this, 'decideForFork')); |
||||
if ($this->parser->getStream()->next()->getValue() == 'else') { |
||||
$this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); |
||||
$else = $this->parser->subparse(array($this, 'decideForEnd'), true); |
||||
} else { |
||||
$else = null; |
||||
} |
||||
$this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); |
||||
|
||||
if (count($targets) > 1) { |
||||
$keyTarget = $targets->getNode(0); |
||||
$keyTarget = new Twig_Node_Expression_AssignName($keyTarget->getAttribute('name'), $keyTarget->getLine()); |
||||
$valueTarget = $targets->getNode(1); |
||||
$valueTarget = new Twig_Node_Expression_AssignName($valueTarget->getAttribute('name'), $valueTarget->getLine()); |
||||
} else { |
||||
$keyTarget = new Twig_Node_Expression_AssignName('_key', $lineno); |
||||
$valueTarget = $targets->getNode(0); |
||||
$valueTarget = new Twig_Node_Expression_AssignName($valueTarget->getAttribute('name'), $valueTarget->getLine()); |
||||
} |
||||
|
||||
return new Twig_Node_For($keyTarget, $valueTarget, $seq, $ifexpr, $body, $else, $lineno, $this->getTag()); |
||||
} |
||||
|
||||
public function decideForFork(Twig_Token $token) |
||||
{ |
||||
return $token->test(array('else', 'endfor')); |
||||
} |
||||
|
||||
public function decideForEnd(Twig_Token $token) |
||||
{ |
||||
return $token->test('endfor'); |
||||
} |
||||
|
||||
/** |
||||
* Gets the tag name associated with this token parser. |
||||
* |
||||
* @return string The tag name |
||||
*/ |
||||
public function getTag() |
||||
{ |
||||
return 'for'; |
||||
} |
||||
} |
@ -1,64 +0,0 @@ |
||||
<?xml version="1.0" encoding="UTF-8"?> |
||||
<package packagerversion="1.8.0" version="2.0" xmlns="http://pear.php.net/dtd/package-2.0" xmlns:tasks="http://pear.php.net/dtd/tasks-1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://pear.php.net/dtd/tasks-1.0 |
||||
http://pear.php.net/dtd/tasks-1.0.xsd |
||||
http://pear.php.net/dtd/package-2.0 |
||||
http://pear.php.net/dtd/package-2.0.xsd"> |
||||
<name>Twig</name> |
||||
<channel>pear.twig-project.org</channel> |
||||
<summary>Twig is a PHP template engine.</summary> |
||||
<description> |
||||
Twig is a template language for PHP, released under the new BSD license |
||||
(code and documentation). |
||||
|
||||
Twig uses a syntax similar to the Django and Jinja template languages which |
||||
inspired the Twig runtime environment. |
||||
</description> |
||||
<lead> |
||||
<name>Fabien Potencier</name> |
||||
<user>fabpot</user> |
||||
<email>fabien.potencier@symfony-project.org</email> |
||||
<active>yes</active> |
||||
</lead> |
||||
<lead> |
||||
<name>Armin Ronacher</name> |
||||
<user>armin</user> |
||||
<email>armin.ronacher@active-4.com</email> |
||||
<active>no</active> |
||||
</lead> |
||||
<date>{{ date }}</date> |
||||
<time>{{ time }}</time> |
||||
<version> |
||||
<release>{{ version }}</release> |
||||
<api>{{ api_version }}</api> |
||||
</version> |
||||
<stability> |
||||
<release>{{ stability }}</release> |
||||
<api>{{ stability }}</api> |
||||
</stability> |
||||
<license uri="http://www.opensource.org/licenses/bsd-license.php">BSD Style</license> |
||||
<notes>-</notes> |
||||
<contents> |
||||
<dir name="/"> |
||||
<file name="AUTHORS" role="doc" /> |
||||
<file name="CHANGELOG" role="doc" /> |
||||
<file name="LICENSE" role="doc" /> |
||||
<file name="README.markdown" role="doc" /> |
||||
<dir name="lib"> |
||||
<dir name="Twig"> |
||||
{{ files }} |
||||
</dir> |
||||
</dir> |
||||
</dir> |
||||
</contents> |
||||
<dependencies> |
||||
<required> |
||||
<php> |
||||
<min>5.2.4</min> |
||||
</php> |
||||
<pearinstaller> |
||||
<min>1.4.0</min> |
||||
</pearinstaller> |
||||
</required> |
||||
</dependencies> |
||||
<phprelease /> |
||||
</package> |
@ -1,21 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) Fabien Potencier |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
|
||||
class Twig_Tests_AutoloaderTest extends PHPUnit_Framework_TestCase |
||||
{ |
||||
public function testAutoload() |
||||
{ |
||||
$this->assertFalse(class_exists('FooBarFoo'), '->autoload() does not try to load classes that does not begin with Twig'); |
||||
|
||||
$autoloader = new Twig_Autoloader(); |
||||
$this->assertNull($autoloader->autoload('Foo'), '->autoload() returns false if it is not able to load a class'); |
||||
} |
||||
} |
@ -1,33 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) Fabien Potencier |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
|
||||
class Twig_Tests_CompilerTest extends PHPUnit_Framework_TestCase |
||||
{ |
||||
public function testReprNumericValueWithLocale() |
||||
{ |
||||
$compiler = new Twig_Compiler(new Twig_Environment()); |
||||
|
||||
$locale = setlocale(LC_NUMERIC, 0); |
||||
if (false === $locale) { |
||||
$this->markTestSkipped('Your platform does not support locales.'); |
||||
} |
||||
|
||||
$required_locales = array('fr_FR.UTF-8', 'fr_FR.UTF8', 'fr_FR.utf-8', 'fr_FR.utf8', 'French_France.1252'); |
||||
if (false === setlocale(LC_ALL, $required_locales)) { |
||||
$this->markTestSkipped('Could not set any of required locales: ' . implode(", ", $required_locales)); |
||||
} |
||||
|
||||
$this->assertEquals('1.2', $compiler->repr(1.2)->getSource()); |
||||
$this->assertContains('fr', strtolower(setlocale(LC_NUMERIC, 0))); |
||||
|
||||
setlocale(LC_ALL, $locale); |
||||
} |
||||
} |
@ -1,81 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) Fabien Potencier |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
|
||||
class Twig_Tests_ErrorTest extends PHPUnit_Framework_TestCase |
||||
{ |
||||
public function testTwigExceptionAddsFileAndLineWhenMissing() |
||||
{ |
||||
$loader = new Twig_Loader_Array(array('index' => "\n\n{{ foo.bar }}")); |
||||
$twig = new Twig_Environment($loader, array('strict_variables' => true, 'debug' => true, 'cache' => false)); |
||||
|
||||
$template = $twig->loadTemplate('index'); |
||||
|
||||
try { |
||||
$template->render(array()); |
||||
|
||||
$this->fail(); |
||||
} catch (Twig_Error_Runtime $e) { |
||||
$this->assertEquals('Variable "foo" does not exist in "index" at line 3', $e->getMessage()); |
||||
$this->assertEquals(3, $e->getTemplateLine()); |
||||
$this->assertEquals('index', $e->getTemplateFile()); |
||||
} |
||||
} |
||||
|
||||
public function testRenderWrapsExceptions() |
||||
{ |
||||
$loader = new Twig_Loader_Array(array('index' => "\n\n\n{{ foo.bar }}")); |
||||
$twig = new Twig_Environment($loader, array('strict_variables' => true, 'debug' => true, 'cache' => false)); |
||||
|
||||
$template = $twig->loadTemplate('index'); |
||||
|
||||
try { |
||||
$template->render(array('foo' => new Twig_Tests_ErrorTest_Foo())); |
||||
|
||||
$this->fail(); |
||||
} catch (Twig_Error_Runtime $e) { |
||||
$this->assertEquals('An exception has been thrown during the rendering of a template ("Runtime error...") in "index" at line 4.', $e->getMessage()); |
||||
$this->assertEquals(4, $e->getTemplateLine()); |
||||
$this->assertEquals('index', $e->getTemplateFile()); |
||||
} |
||||
} |
||||
|
||||
public function testTwigExceptionAddsFileAndLineWhenMissingWithInheritance() |
||||
{ |
||||
$loader = new Twig_Loader_Array(array( |
||||
'index' => "{% extends 'base' %} |
||||
{% block content %} |
||||
{{ foo.bar }} |
||||
{% endblock %}", |
||||
'base' => '{% block content %}{% endblock %}' |
||||
)); |
||||
$twig = new Twig_Environment($loader, array('strict_variables' => true, 'debug' => true, 'cache' => false)); |
||||
|
||||
$template = $twig->loadTemplate('index'); |
||||
|
||||
try { |
||||
$template->render(array()); |
||||
|
||||
$this->fail(); |
||||
} catch (Twig_Error_Runtime $e) { |
||||
$this->assertEquals('Variable "foo" does not exist in "index" at line 3', $e->getMessage()); |
||||
$this->assertEquals(3, $e->getTemplateLine()); |
||||
$this->assertEquals('index', $e->getTemplateFile()); |
||||
} |
||||
} |
||||
} |
||||
|
||||
class Twig_Tests_ErrorTest_Foo |
||||
{ |
||||
public function bar() |
||||
{ |
||||
throw new Exception('Runtime error...'); |
||||
} |
||||
} |
@ -1,217 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) Fabien Potencier |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
|
||||
class Twig_Tests_ExpressionParserTest extends PHPUnit_Framework_TestCase |
||||
{ |
||||
/** |
||||
* @expectedException Twig_Error_Syntax |
||||
* @dataProvider getFailingTestsForAssignment |
||||
*/ |
||||
public function testCanOnlyAssignToNames($template) |
||||
{ |
||||
$env = new Twig_Environment(new Twig_Loader_String(), array('cache' => false, 'autoescape' => false)); |
||||
$parser = new Twig_Parser($env); |
||||
|
||||
$parser->parse($env->tokenize($template, 'index')); |
||||
} |
||||
|
||||
public function getFailingTestsForAssignment() |
||||
{ |
||||
return array( |
||||
array('{% set false = "foo" %}'), |
||||
array('{% set true = "foo" %}'), |
||||
array('{% set none = "foo" %}'), |
||||
array('{% set 3 = "foo" %}'), |
||||
array('{% set 1 + 2 = "foo" %}'), |
||||
array('{% set "bar" = "foo" %}'), |
||||
array('{% set %}{% endset %}') |
||||
); |
||||
} |
||||
|
||||
/** |
||||
* @dataProvider getTestsForArray |
||||
*/ |
||||
public function testArrayExpression($template, $expected) |
||||
{ |
||||
$env = new Twig_Environment(new Twig_Loader_String(), array('cache' => false, 'autoescape' => false)); |
||||
$stream = $env->tokenize($template, 'index'); |
||||
$parser = new Twig_Parser($env); |
||||
|
||||
$this->assertEquals($expected, $parser->parse($stream)->getNode('body')->getNode(0)->getNode('expr')); |
||||
} |
||||
|
||||
/** |
||||
* @expectedException Twig_Error_Syntax |
||||
* @dataProvider getFailingTestsForArray |
||||
*/ |
||||
public function testArraySyntaxError($template) |
||||
{ |
||||
$env = new Twig_Environment(new Twig_Loader_String(), array('cache' => false, 'autoescape' => false)); |
||||
$parser = new Twig_Parser($env); |
||||
|
||||
$parser->parse($env->tokenize($template, 'index')); |
||||
} |
||||
|
||||
public function getFailingTestsForArray() |
||||
{ |
||||
return array( |
||||
array('{{ [1, "a": "b"] }}'), |
||||
array('{{ {"a": "b", 2} }}'), |
||||
); |
||||
} |
||||
|
||||
public function getTestsForArray() |
||||
{ |
||||
return array( |
||||
// simple array |
||||
array('{{ [1, 2] }}', new Twig_Node_Expression_Array(array( |
||||
new Twig_Node_Expression_Constant(0, 1), |
||||
new Twig_Node_Expression_Constant(1, 1), |
||||
|
||||
new Twig_Node_Expression_Constant(1, 1), |
||||
new Twig_Node_Expression_Constant(2, 1), |
||||
), 1), |
||||
), |
||||
|
||||
// array with trailing , |
||||
array('{{ [1, 2, ] }}', new Twig_Node_Expression_Array(array( |
||||
new Twig_Node_Expression_Constant(0, 1), |
||||
new Twig_Node_Expression_Constant(1, 1), |
||||
|
||||
new Twig_Node_Expression_Constant(1, 1), |
||||
new Twig_Node_Expression_Constant(2, 1), |
||||
), 1), |
||||
), |
||||
|
||||
// simple hash |
||||
array('{{ {"a": "b", "b": "c"} }}', new Twig_Node_Expression_Array(array( |
||||
new Twig_Node_Expression_Constant('a', 1), |
||||
new Twig_Node_Expression_Constant('b', 1), |
||||
|
||||
new Twig_Node_Expression_Constant('b', 1), |
||||
new Twig_Node_Expression_Constant('c', 1), |
||||
), 1), |
||||
), |
||||
|
||||
// hash with trailing , |
||||
array('{{ {"a": "b", "b": "c", } }}', new Twig_Node_Expression_Array(array( |
||||
new Twig_Node_Expression_Constant('a', 1), |
||||
new Twig_Node_Expression_Constant('b', 1), |
||||
|
||||
new Twig_Node_Expression_Constant('b', 1), |
||||
new Twig_Node_Expression_Constant('c', 1), |
||||
), 1), |
||||
), |
||||
|
||||
// hash in an array |
||||
array('{{ [1, {"a": "b", "b": "c"}] }}', new Twig_Node_Expression_Array(array( |
||||
new Twig_Node_Expression_Constant(0, 1), |
||||
new Twig_Node_Expression_Constant(1, 1), |
||||
|
||||
new Twig_Node_Expression_Constant(1, 1), |
||||
new Twig_Node_Expression_Array(array( |
||||
new Twig_Node_Expression_Constant('a', 1), |
||||
new Twig_Node_Expression_Constant('b', 1), |
||||
|
||||
new Twig_Node_Expression_Constant('b', 1), |
||||
new Twig_Node_Expression_Constant('c', 1), |
||||
), 1), |
||||
), 1), |
||||
), |
||||
|
||||
// array in a hash |
||||
array('{{ {"a": [1, 2], "b": "c"} }}', new Twig_Node_Expression_Array(array( |
||||
new Twig_Node_Expression_Constant('a', 1), |
||||
new Twig_Node_Expression_Array(array( |
||||
new Twig_Node_Expression_Constant(0, 1), |
||||
new Twig_Node_Expression_Constant(1, 1), |
||||
|
||||
new Twig_Node_Expression_Constant(1, 1), |
||||
new Twig_Node_Expression_Constant(2, 1), |
||||
), 1), |
||||
new Twig_Node_Expression_Constant('b', 1), |
||||
new Twig_Node_Expression_Constant('c', 1), |
||||
), 1), |
||||
), |
||||
); |
||||
} |
||||
|
||||
/** |
||||
* @expectedException Twig_Error_Syntax |
||||
*/ |
||||
public function testStringExpressionDoesNotConcatenateTwoConsecutiveStrings() |
||||
{ |
||||
$env = new Twig_Environment(new Twig_Loader_String(), array('cache' => false, 'autoescape' => false, 'optimizations' => 0)); |
||||
$stream = $env->tokenize('{{ "a" "b" }}', 'index'); |
||||
$parser = new Twig_Parser($env); |
||||
|
||||
$parser->parse($stream); |
||||
} |
||||
|
||||
/** |
||||
* @dataProvider getTestsForString |
||||
*/ |
||||
public function testStringExpression($template, $expected) |
||||
{ |
||||
$env = new Twig_Environment(new Twig_Loader_String(), array('cache' => false, 'autoescape' => false, 'optimizations' => 0)); |
||||
$stream = $env->tokenize($template, 'index'); |
||||
$parser = new Twig_Parser($env); |
||||
|
||||
$this->assertEquals($expected, $parser->parse($stream)->getNode('body')->getNode(0)->getNode('expr')); |
||||
} |
||||
|
||||
public function getTestsForString() |
||||
{ |
||||
return array( |
||||
array( |
||||
'{{ "foo" }}', new Twig_Node_Expression_Constant('foo', 1), |
||||
), |
||||
array( |
||||
'{{ "foo #{bar}" }}', new Twig_Node_Expression_Binary_Concat( |
||||
new Twig_Node_Expression_Constant('foo ', 1), |
||||
new Twig_Node_Expression_Name('bar', 1), |
||||
1 |
||||
), |
||||
), |
||||
array( |
||||
'{{ "foo #{bar} baz" }}', new Twig_Node_Expression_Binary_Concat( |
||||
new Twig_Node_Expression_Binary_Concat( |
||||
new Twig_Node_Expression_Constant('foo ', 1), |
||||
new Twig_Node_Expression_Name('bar', 1), |
||||
1 |
||||
), |
||||
new Twig_Node_Expression_Constant(' baz', 1), |
||||
1 |
||||
) |
||||
), |
||||
|
||||
array( |
||||
'{{ "foo #{"foo #{bar} baz"} baz" }}', new Twig_Node_Expression_Binary_Concat( |
||||
new Twig_Node_Expression_Binary_Concat( |
||||
new Twig_Node_Expression_Constant('foo ', 1), |
||||
new Twig_Node_Expression_Binary_Concat( |
||||
new Twig_Node_Expression_Binary_Concat( |
||||
new Twig_Node_Expression_Constant('foo ', 1), |
||||
new Twig_Node_Expression_Name('bar', 1), |
||||
1 |
||||
), |
||||
new Twig_Node_Expression_Constant(' baz', 1), |
||||
1 |
||||
), |
||||
1 |
||||
), |
||||
new Twig_Node_Expression_Constant(' baz', 1), |
||||
1 |
||||
), |
||||
), |
||||
); |
||||
} |
||||
} |
@ -1,114 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) Fabien Potencier |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
|
||||
class Twig_Tests_Extension_CoreTest extends PHPUnit_Framework_TestCase |
||||
{ |
||||
/** |
||||
* @dataProvider getRandomFunctionTestData |
||||
*/ |
||||
public function testRandomFunction($value, $expectedInArray) |
||||
{ |
||||
for ($i = 0; $i < 100; $i++) { |
||||
$this->assertTrue(in_array(twig_random(new Twig_Environment(), $value), $expectedInArray, true)); // assertContains() would not consider the type |
||||
} |
||||
} |
||||
|
||||
public function getRandomFunctionTestData() |
||||
{ |
||||
return array( |
||||
array( // array |
||||
array('apple', 'orange', 'citrus'), |
||||
array('apple', 'orange', 'citrus'), |
||||
), |
||||
array( // Traversable |
||||
new ArrayObject(array('apple', 'orange', 'citrus')), |
||||
array('apple', 'orange', 'citrus'), |
||||
), |
||||
array( // unicode string |
||||
'Ä€é', |
||||
array('Ä', '€', 'é'), |
||||
), |
||||
array( // numeric but string |
||||
'123', |
||||
array('1', '2', '3'), |
||||
), |
||||
array( // integer |
||||
5, |
||||
range(0, 5, 1), |
||||
), |
||||
array( // float |
||||
5.9, |
||||
range(0, 5, 1), |
||||
), |
||||
array( // negative |
||||
-2, |
||||
array(0, -1, -2), |
||||
), |
||||
); |
||||
} |
||||
|
||||
public function testRandomFunctionWithoutParameter() |
||||
{ |
||||
$max = mt_getrandmax(); |
||||
|
||||
for ($i = 0; $i < 100; $i++) { |
||||
$val = twig_random(new Twig_Environment()); |
||||
$this->assertTrue(is_int($val) && $val >= 0 && $val <= $max); |
||||
} |
||||
} |
||||
|
||||
public function testRandomFunctionReturnsAsIs() |
||||
{ |
||||
$this->assertSame('', twig_random(new Twig_Environment(), '')); |
||||
|
||||
$instance = new stdClass(); |
||||
$this->assertSame($instance, twig_random(new Twig_Environment(), $instance)); |
||||
} |
||||
|
||||
/** |
||||
* @expectedException Twig_Error_Runtime |
||||
*/ |
||||
public function testRandomFunctionOfEmptyArrayThrowsException() |
||||
{ |
||||
twig_random(new Twig_Environment(), array()); |
||||
} |
||||
|
||||
public function testRandomFunctionOnNonUTF8String() |
||||
{ |
||||
if (!function_exists('iconv') && !function_exists('mb_convert_encoding')) { |
||||
$this->markTestSkipped('needs iconv or mbstring'); |
||||
} |
||||
|
||||
$twig = new Twig_Environment(); |
||||
$twig->setCharset('ISO-8859-1'); |
||||
|
||||
$text = twig_convert_encoding('Äé', 'ISO-8859-1', 'UTF-8'); |
||||
for ($i = 0; $i < 30; $i++) { |
||||
$rand = twig_random($twig, $text); |
||||
$this->assertTrue(in_array(twig_convert_encoding($rand, 'UTF-8', 'ISO-8859-1'), array('Ä', 'é'), true)); |
||||
} |
||||
} |
||||
|
||||
public function testReverseFilterOnNonUTF8String() |
||||
{ |
||||
if (!function_exists('iconv') && !function_exists('mb_convert_encoding')) { |
||||
$this->markTestSkipped('needs iconv or mbstring'); |
||||
} |
||||
|
||||
$twig = new Twig_Environment(); |
||||
$twig->setCharset('ISO-8859-1'); |
||||
|
||||
$input = twig_convert_encoding('Äé', 'ISO-8859-1', 'UTF-8'); |
||||
$output = twig_convert_encoding(twig_reverse_filter($twig, $input), 'UTF-8', 'ISO-8859-1'); |
||||
|
||||
$this->assertEquals($output, 'éÄ'); |
||||
} |
||||
} |
@ -1,209 +0,0 @@ |
||||
<?php |
||||
|
||||
/* |
||||
* This file is part of Twig. |
||||
* |
||||
* (c) Fabien Potencier |
||||
* |
||||
* For the full copyright and license information, please view the LICENSE |
||||
* file that was distributed with this source code. |
||||
*/ |
||||
|
||||
class Twig_Tests_Extension_SandboxTest extends PHPUnit_Framework_TestCase |
||||
{ |
||||
static protected $params, $templates; |
||||
|
||||
public function setUp() |
||||
{ |
||||
self::$params = array( |
||||
'name' => 'Fabien', |
||||
'obj' => new FooObject(), |
||||
'arr' => array('obj' => new FooObject()), |
||||
); |
||||
|
||||
self::$templates = array( |
||||
'1_basic1' => '{{ obj.foo }}', |
||||
'1_basic2' => '{{ name|upper }}', |
||||
'1_basic3' => '{% if name %}foo{% endif %}', |
||||
'1_basic4' => '{{ obj.bar }}', |
||||
'1_basic5' => '{{ obj }}', |
||||
'1_basic6' => '{{ arr.obj }}', |
||||
'1_basic7' => '{{ cycle(["foo","bar"], 1) }}', |
||||
'1_basic8' => '{{ obj.getfoobar }}{{ obj.getFooBar }}', |
||||
'1_basic' => '{% if obj.foo %}{{ obj.foo|upper }}{% endif %}', |
||||
'1_layout' => '{% block content %}{% endblock %}', |
||||
'1_child' => '{% extends "1_layout" %}{% block content %}{{ "a"|json_encode }}{% endblock %}', |
||||
); |
||||
} |
||||
|
||||
/** |
||||
* @expectedException Twig_Sandbox_SecurityError |
||||
* @expectedExceptionMessage Filter "json_encode" is not allowed in "1_child". |
||||
*/ |
||||
public function testSandboxWithInheritance() |
||||
{ |
||||
$twig = $this->getEnvironment(true, array(), self::$templates, array('block')); |
||||
$twig->loadTemplate('1_child')->render(array()); |
||||
} |
||||
|
||||
public function testSandboxGloballySet() |
||||
{ |
||||
$twig = $this->getEnvironment(false, array(), self::$templates); |
||||
$this->assertEquals('FOO', $twig->loadTemplate('1_basic')->render(self::$params), 'Sandbox does nothing if it is disabled globally'); |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates); |
||||
try { |
||||
$twig->loadTemplate('1_basic1')->render(self::$params); |
||||
$this->fail('Sandbox throws a SecurityError exception if an unallowed method is called'); |
||||
} catch (Twig_Sandbox_SecurityError $e) { |
||||
} |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates); |
||||
try { |
||||
$twig->loadTemplate('1_basic2')->render(self::$params); |
||||
$this->fail('Sandbox throws a SecurityError exception if an unallowed filter is called'); |
||||
} catch (Twig_Sandbox_SecurityError $e) { |
||||
} |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates); |
||||
try { |
||||
$twig->loadTemplate('1_basic3')->render(self::$params); |
||||
$this->fail('Sandbox throws a SecurityError exception if an unallowed tag is used in the template'); |
||||
} catch (Twig_Sandbox_SecurityError $e) { |
||||
} |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates); |
||||
try { |
||||
$twig->loadTemplate('1_basic4')->render(self::$params); |
||||
$this->fail('Sandbox throws a SecurityError exception if an unallowed property is called in the template'); |
||||
} catch (Twig_Sandbox_SecurityError $e) { |
||||
} |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates); |
||||
try { |
||||
$twig->loadTemplate('1_basic5')->render(self::$params); |
||||
$this->fail('Sandbox throws a SecurityError exception if an unallowed method (__toString()) is called in the template'); |
||||
} catch (Twig_Sandbox_SecurityError $e) { |
||||
} |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates); |
||||
try { |
||||
$twig->loadTemplate('1_basic6')->render(self::$params); |
||||
$this->fail('Sandbox throws a SecurityError exception if an unallowed method (__toString()) is called in the template'); |
||||
} catch (Twig_Sandbox_SecurityError $e) { |
||||
} |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates); |
||||
try { |
||||
$twig->loadTemplate('1_basic7')->render(self::$params); |
||||
$this->fail('Sandbox throws a SecurityError exception if an unallowed function is called in the template'); |
||||
} catch (Twig_Sandbox_SecurityError $e) { |
||||
} |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array('FooObject' => 'foo')); |
||||
FooObject::reset(); |
||||
$this->assertEquals('foo', $twig->loadTemplate('1_basic1')->render(self::$params), 'Sandbox allow some methods'); |
||||
$this->assertEquals(1, FooObject::$called['foo'], 'Sandbox only calls method once'); |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array('FooObject' => '__toString')); |
||||
FooObject::reset(); |
||||
$this->assertEquals('foo', $twig->loadTemplate('1_basic5')->render(self::$params), 'Sandbox allow some methods'); |
||||
$this->assertEquals(1, FooObject::$called['__toString'], 'Sandbox only calls method once'); |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates, array(), array('upper')); |
||||
$this->assertEquals('FABIEN', $twig->loadTemplate('1_basic2')->render(self::$params), 'Sandbox allow some filters'); |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates, array('if')); |
||||
$this->assertEquals('foo', $twig->loadTemplate('1_basic3')->render(self::$params), 'Sandbox allow some tags'); |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array(), array('FooObject' => 'bar')); |
||||
$this->assertEquals('bar', $twig->loadTemplate('1_basic4')->render(self::$params), 'Sandbox allow some properties'); |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array(), array(), array('cycle')); |
||||
$this->assertEquals('bar', $twig->loadTemplate('1_basic7')->render(self::$params), 'Sandbox allow some functions'); |
||||
|
||||
foreach (array('getfoobar', 'getFoobar', 'getFooBar') as $name) { |
||||
$twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array('FooObject' => $name)); |
||||
FooObject::reset(); |
||||
$this->assertEquals('foobarfoobar', $twig->loadTemplate('1_basic8')->render(self::$params), 'Sandbox allow methods in a case-insensitive way'); |
||||
$this->assertEquals(2, FooObject::$called['getFooBar'], 'Sandbox only calls method once'); |
||||
} |
||||
} |
||||
|
||||
public function testSandboxLocallySetForAnInclude() |
||||
{ |
||||
self::$templates = array( |
||||
'2_basic' => '{{ obj.foo }}{% include "2_included" %}{{ obj.foo }}', |
||||
'2_included' => '{% if obj.foo %}{{ obj.foo|upper }}{% endif %}', |
||||
); |
||||
|
||||
$twig = $this->getEnvironment(false, array(), self::$templates); |
||||
$this->assertEquals('fooFOOfoo', $twig->loadTemplate('2_basic')->render(self::$params), 'Sandbox does nothing if disabled globally and sandboxed not used for the include'); |
||||
|
||||
self::$templates = array( |
||||
'3_basic' => '{{ obj.foo }}{% sandbox %}{% include "3_included" %}{% endsandbox %}{{ obj.foo }}', |
||||
'3_included' => '{% if obj.foo %}{{ obj.foo|upper }}{% endif %}', |
||||
); |
||||
|
||||
$twig = $this->getEnvironment(true, array(), self::$templates); |
||||
try { |
||||
$twig->loadTemplate('3_basic')->render(self::$params); |
||||
$this->fail('Sandbox throws a SecurityError exception when the included file is sandboxed'); |
||||
} catch (Twig_Sandbox_SecurityError $e) { |
||||
} |
||||
} |
||||
|
||||
public function testMacrosInASandbox() |
||||
{ |
||||
$twig = $this->getEnvironment(true, array('autoescape' => true), array('index' => <<<EOF |
||||
{% macro test(text) %}<p>{{ text }}</p>{% endmacro %} |
||||
{{ _self.test('username') }} |
||||
EOF |
||||
), array('macro'), array('escape')); |
||||
|
||||
$this->assertEquals('<p>username</p>', $twig->loadTemplate('index')->render(array())); |
||||
} |
||||
|
||||
protected function getEnvironment($sandboxed, $options, $templates, $tags = array(), $filters = array(), $methods = array(), $properties = array(), $functions = array()) |
||||
{ |
||||
$loader = new Twig_Loader_Array($templates); |
||||
$twig = new Twig_Environment($loader, array_merge(array('debug' => true, 'cache' => false, 'autoescape' => false), $options)); |
||||
$policy = new Twig_Sandbox_SecurityPolicy($tags, $filters, $methods, $properties, $functions); |
||||
$twig->addExtension(new Twig_Extension_Sandbox($policy, $sandboxed)); |
||||
|
||||
return $twig; |
||||
} |
||||
} |
||||
|
||||
class FooObject |
||||
{ |
||||
static public $called = array('__toString' => 0, 'foo' => 0, 'getFooBar' => 0); |
||||
|
||||
public $bar = 'bar'; |
||||
|
||||
static public function reset() |
||||
{ |
||||
self::$called = array('__toString' => 0, 'foo' => 0, 'getFooBar' => 0); |
||||
} |
||||
|
||||
public function __toString() |
||||
{ |
||||
++self::$called['__toString']; |
||||
|
||||
return 'foo'; |
||||
} |
||||
|
||||
public function foo() |
||||
{ |
||||
++self::$called['foo']; |
||||
|
||||
return 'foo'; |
||||
} |
||||
|
||||
public function getFooBar() |
||||
{ |
||||
++self::$called['getFooBar']; |
||||
|
||||
return 'foobar'; |
||||
} |
||||
} |
@ -1,70 +0,0 @@ |
||||
<?php |
||||
|
||||
class Twig_Tests_FileCachingTest extends PHPUnit_Framework_TestCase |
||||
{ |
||||
protected $fileName; |
||||
protected $env; |
||||
protected $tmpDir; |
||||
|
||||
public function setUp() |
||||
{ |
||||
$this->tmpDir = sys_get_temp_dir().'/TwigTests'; |
||||
if (!file_exists($this->tmpDir)) { |
||||
@mkdir($this->tmpDir, 0777, true);; |
||||
} |
||||
|
||||
if (!is_writable($this->tmpDir)) { |
||||
$this->markTestSkipped(sprintf('Unable to run the tests as "%s" is not writable.', $this->tmpDir)); |
||||
} |
||||
|
||||
$this->env = new Twig_Environment(new Twig_Loader_String(), array('cache' => $this->tmpDir)); |
||||
} |
||||
|
||||
public function tearDown() |
||||
{ |
||||
if ($this->fileName) { |
||||
unlink($this->fileName); |
||||
} |
||||
|
||||
$this->removeDir($this->tmpDir); |
||||
} |
||||
|
||||
public function testWritingCacheFiles() |
||||
{ |
||||
$name = 'This is just text.'; |
||||
$template = $this->env->loadTemplate($name); |
||||
$cacheFileName = $this->env->getCacheFilename($name); |
||||
|
||||
$this->assertTrue(file_exists($cacheFileName), 'Cache file does not exist.'); |
||||
$this->fileName = $cacheFileName; |
||||
} |
||||
|
||||
public function testClearingCacheFiles() |
||||
{ |
||||
$name = 'I will be deleted.'; |
||||
$template = $this->env->loadTemplate($name); |
||||
$cacheFileName = $this->env->getCacheFilename($name); |
||||
|
||||
$this->assertTrue(file_exists($cacheFileName), 'Cache file does not exist.'); |
||||
$this->env->clearCacheFiles(); |
||||
$this->assertFalse(file_exists($cacheFileName), 'Cache file was not cleared.'); |
||||
} |
||||
|
||||
private function removeDir($target) |
||||
{ |
||||
$fp = opendir($target); |
||||
while (false !== $file = readdir($fp)) { |
||||
if (in_array($file, array('.', '..'))) { |
||||
continue; |
||||
} |
||||
|
||||
if (is_dir($target.'/'.$file)) { |
||||
self::removeDir($target.'/'.$file); |
||||
} else { |
||||
unlink($target.'/'.$file); |
||||
} |
||||
} |
||||
closedir($fp); |
||||
rmdir($target); |
||||
} |
||||
} |
@ -1,20 +0,0 @@ |
||||
--TEST-- |
||||
Exception for an unclosed tag |
||||
--TEMPLATE-- |
||||
{% block foo %} |
||||
{% if foo %} |
||||
|
||||
|
||||
|
||||
|
||||
{% for i in fo %} |
||||
|
||||
|
||||
|
||||
{% endfor %} |
||||
|
||||
|
||||
|
||||
{% endblock %} |
||||
--EXCEPTION-- |
||||
Twig_Error_Syntax: Unexpected tag name "endblock" (expecting closing tag for the "if" tag defined near line 4) in "index.twig" at line 16 |
@ -1,61 +0,0 @@ |
||||
--TEST-- |
||||
Twig supports array notation |
||||
--TEMPLATE-- |
||||
{# empty array #} |
||||
{{ []|join(',') }} |
||||
|
||||
{{ [1, 2]|join(',') }} |
||||
{{ ['foo', "bar"]|join(',') }} |
||||
{{ {0: 1, 'foo': 'bar'}|join(',') }} |
||||
{{ {0: 1, 'foo': 'bar'}|keys|join(',') }} |
||||
|
||||
{{ {0: 1, foo: 'bar'}|join(',') }} |
||||
{{ {0: 1, foo: 'bar'}|keys|join(',') }} |
||||
|
||||
{# nested arrays #} |
||||
{% set a = [1, 2, [1, 2], {'foo': {'foo': 'bar'}}] %} |
||||
{{ a[2]|join(',') }} |
||||
{{ a[3]["foo"]|join(',') }} |
||||
|
||||
{# works even if [] is used inside the array #} |
||||
{{ [foo[bar]]|join(',') }} |
||||
|
||||
{# elements can be any expression #} |
||||
{{ ['foo'|upper, bar|upper, bar == foo]|join(',') }} |
||||
|
||||
{# arrays can have a trailing , like in PHP #} |
||||
{{ |
||||
[ |
||||
1, |
||||
2, |
||||
]|join(',') |
||||
}} |
||||
|
||||
{# keys can be any expression #} |
||||
{% set a = 1 %} |
||||
{% set b = "foo" %} |
||||
{% set ary = { (a): 'a', (b): 'b', 'c': 'c', (a ~ b): 'd' } %} |
||||
{{ ary|keys|join(',') }} |
||||
{{ ary|join(',') }} |
||||
--DATA-- |
||||
return array('bar' => 'bar', 'foo' => array('bar' => 'bar')) |
||||
--EXPECT-- |
||||
1,2 |
||||
foo,bar |
||||
1,bar |
||||
0,foo |
||||
|
||||
1,bar |
||||
0,foo |
||||
|
||||
1,2 |
||||
bar |
||||
|
||||
bar |
||||
|
||||
FOO,BAR, |
||||
|
||||
1,2 |
||||
|
||||
1,foo,c,1foo |
||||
a,b,c,d |
@ -1,14 +0,0 @@ |
||||
--TEST-- |
||||
Twig supports method calls |
||||
--TEMPLATE-- |
||||
{{ items.foo }} |
||||
{{ items['foo'] }} |
||||
{{ items[foo] }} |
||||
{{ items[items[foo]] }} |
||||
--DATA-- |
||||
return array('foo' => 'bar', 'items' => array('foo' => 'bar', 'bar' => 'foo')) |
||||
--EXPECT-- |
||||
bar |
||||
bar |
||||
foo |
||||
bar |
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