What do you need to know about Twig in Drupal?
Twig in Drupal Twig is a template engine for PHP and it is part of the Symfony2 framework. In Drupal 8 Twig replaces PHPTemplate as the default templating engine. One of the results of this change is that all of the theme_ * functions and PHPTemplate based *. tpl. php files have been replaced by *. html. twig templating files.
Which is the default templating engine in Drupal 8?
Twig is a template engine for PHP and it is part of the Symfony2 framework. In Drupal 8 Twig replaces PHPTemplate as the default templating engine. One of the results of this change is that all of the theme_ * functions and PHPTemplate based *. tpl. php files have been replaced by *. html. twig templating files.
How to make changes to a Twig template?
You can find out what templates are in use for any part of the page by using the Twig debugging tools. Sometimes you want to make changes to a template file, but only for some of the places that it’s used. A common example is making changes to the node template file for only nodes of a specific type.
What can you do with templates in Drupal?
Drupal allows you to override all of the templates that are used to produce HTML markup so that you can fully control the markup that is shown as output within a custom theme. There are templates for each page element ranging from the high level HTML to small fields.
When to use theme or theme in twig?
Always return render arrays instead of calling theme() or drupal_render() within preprocess functions. Twig renders everything automatically so there is no need to call drupal_render() or theme() within a preprocess function.
What are some examples of rendering using twig?
The “before” examples here are generally in the style of Drupal 7 code. For additional options for rendering via twig consider the twig_tweak contributed module.