Chapter 3. Template files

Twig namespaces

Usually, when you refer to a template, you'll use the relative path from the main directory at the root of the theme:

{# this template is located in themes/harmony/acme-theme/layout.html.twig #}
{% extends "layout.html.twig" %}
‚Äč
{# this template is located in themes/harmony/acme-theme/user/profile.html.twig #}
{{ include('user/profile.html.twig') }}

If the application defines lots of templates and stores them in deep nested directories, you may consider using Twig namespaces, which create shortcuts to template directories.

In HarmonyCMS, the HarmonyThemeBundle take care of that for you! This bundle will register each themes (activated or not) has a Twig namespace.

In our case, the registered namespace if called HarmonyAcmeTheme, but you must prefix the @ character when using it in templates (that's how Twig can differentiate namespaces from regular paths). Assuming there's a file called sidebar.html.twig in the themes/harmony/acme-theme/ directory, you can refer to it as:

{{ include('@HarmonyAcmeTheme/sidebar.html.twig') }}

Execute this command to verify if your template name is correct and know which template file will be loaded:

php bin/console debug:twig @HarmonyAcmeTheme/sidebar.html.twig