'How can I define global variables inside a twig template file?

Is it possible to set global variables in a twig file, so that I can access that variables from other files, macros and blocks.

For example, I want to have variables.twig file and in it set my variables and then I can include it in other templates.

I know that setting global variables is possible from the framework (e.g. Symfony) but I want a solution using twig features only.

phpvariablestwigglobaltemplating


Solution 1:[1]

It seems that you can assign global READONLY variables in your top-level template and use them in all underlying templates. But you can't override them of course. It covers my case, maybe will be useful for somebody else.

base.html.twig

<!DOCTYPE html>
{# assign global vars here #}
{% set myReadonlyJar = your_custom_ext_twig_function() %} 
<html>
    <body>
        {% block body %}{% endblock %}
    </body>
</html>

my_page.twig

{% extends 'stack/base.html.twig' %}

{% block body %}
    {{ myReadonlyJar.v1 }}

    {{ myReadonlyJar.v2 }}
    {{ include('stack/deep.twig') }}
{% endblock %}

deep.twig

Check top vars very deep inside: <br>
{{ myReadonlyJar.v2 }}

Solution 2:[2]

Since Symfony 4, you can set the globals in config/packages/twig.yaml.

# config/packages/twig.yaml
twig:
    # ...
    globals:
        ga_tracking: 'UA-xxxxx-x'

Solution 3:[3]

Using SlimFramework and Twig-View:3.0

You can use the following method Twig::offsetSet

$twig = Twig::create('view/templates');
$twig->offsetSet('globalVar', 'globalVarValue');

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Yehor
Solution 2
Solution 3 SamHoque

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