Use Twig Custom Set Variables From an Include

Question

I'm trying to include a twig file with a bunch of custom set variables and then use the variables in the multiple other template files. Similar to how including a PHP file works.

I don't seem to have access to the variables set inside the include in my index file.

Is there any way to do this?

Sample Code *Edited

Included File:

{# variables.html #}
{% set width = "100" %}
{% set height = "250" %}

Template File:

{# index.html #} 
{% include 'variables.html' %}
{{ width }}
{{ height }}

Expected Outcome:

100 250

Actual Outcome:

// Nothing gets output

Answer 1

As far as I know it is only possible with {% extends %} tag. Instead of including template with variables you should extend it.

Example:

variables.tpl:

{% set some_variable='123' %}
... more variables ...

{% block content %}
{% endblock %}

template.tpl

{% extends 'variables.tpl' %}

{% block content %}
{{ some_variable }}
... more code which uses variables assigned in variables.tpl ...
{% endblock %}