Twig include variable path name with concatenation

Question

How do I specify an include to a view path that is a "concatenation". A simple example;

In form.twig;

{% include {path: 'survey.'group]} %}

group is a variable, that is passed in to the view from the controller. The view I am trying to load here is views/survey/example.twig

Answer 1

The twig concatenation operator is ~.

So you should have have something like

 {% include 'survey/' ~ group ~ '.html.twig' %}

(or however exactly your concatenation needs to go).