Contents
How to define custom functions in twig templates?
You can also define your own custom Twig functions in a custom module (but not in a theme). To find an example for how to do this, see this example in core/modules/system/tests/modules/twig_extension_test/src/TwigExtension/TestExtension.php. Attaches an asset library to the template.
How are twig functions defined in Drupal core?
Twig provides a number of handy functions that can be used directly within Templates. Drupal core adds a handful of custom functions that are Drupal specific. These are defined in the TwigExtension class. You can also define your own custom Twig functions in a custom module (but not in a theme).
Can you extend twig without creating an extension?
When extending Twig without creating an extension, Twig won’t be able to recompile your templates when the PHP code is updated. To see your changes in real-time, either disable template caching or package your code into an extension (see the next section of this chapter).
How to generate absolute URL in twig templates?
Generates a [relative] URL path given a route name and parameters. The url and path function are defined in close parallel to those found in \\Symfony\\Bridge\\Twig\\Extension\\RoutingExtension. If you are working in a node template and have a node variable available, you can generate an absolute URL to the current node:
How to create a Twig template in Drupal?
Prints the relative path to the active theme. Create new Attribute objects using the create_attribute() function inside a Twig template. These objects can then be manipulated just like other Attribute objects coming into the Twig template. Convenience function around render().
How to write a Twig template in PHP?
Just like in PHP, you can write anything and it’ll just be displayed as HTML on the page: Hello Twig Viewers! To see this amazing message, go to the index.php file in your browser. This works because we made the index.php file render the homepage.twig template.