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How to use and Register namespaced Twig Paths

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How to use and Register namespaced Twig Paths

New in version 2.2: Namespaced path support was added in 2.2.

Usually, when you refer to a template, you'll use the MyBundle:Subdir:filename.html.twig format (see Template Naming and Locations).

Twig also natively offers a feature called "namespaced paths", and support is built-in automatically for all of your bundles.

Take the following paths as an example:

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{% extends "AcmeDemoBundle::layout.html.twig" %}
{% include "AcmeDemoBundle:Foo:bar.html.twig" %}

With namespaced paths, the following works as well:

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{% extends "@AcmeDemo/layout.html.twig" %}
{% include "@AcmeDemo/Foo/bar.html.twig" %}

Both paths are valid and functional by default in Symfony2.

Tip

As an added bonus, the namespaced syntax is faster.

Registering your own namespaces

You can also register your own custom namespaces. Suppose that you're using some third-party library that includes Twig templates that live in vendor/acme/foo-project/templates. First, register a namespace for this directory:

  • YAML
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    # app/config/config.yml
twig:
    # ...
    paths:
        "%kernel.root_dir%/../vendor/acme/foo-bar/templates": foo_bar
  • XML
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    <!-- app/config/config.xml -->
<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:twig="http://symfony.com/schema/dic/twig"
>

    <twig:config debug="%kernel.debug%" strict-variables="%kernel.debug%">
        <twig:path namespace="foo_bar">%kernel.root_dir%/../vendor/acme/foo-bar/templates</twig:path>
    </twig:config>
</container>
  • PHP
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    // app/config/config.php
$container->loadFromExtension('twig', array(
    'paths' => array(
        '%kernel.root_dir%/../vendor/acme/foo-bar/templates' => 'foo_bar',
    );
));

The registered namespace is called foo_bar, which refers to the vendor/acme/foo-project/templates directory. Assuming there's a file called sidebar.twig in that directory, you can use it easily:

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{% include '@foo_bar/side.bar.twig` %}

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.