Manage different base templates from database in Symfony - php

Question

I'm trying to manage multiple templates in Symfony. The active Template comes from a database and I have a controller which gives the correct path entry.
My Problem is to tell symfony about this path. I have searched the Twig render method in multiple classes but changes are not successfully.
My TemplateController.php
public function loadtpl() {
$repo = $this->getDoctrine()->getRepository(Templates::class);
$found = $repo->findByActive(1);
$tpl = $found[0]->getPath();
return $tpl;
}
This gives me the template path but I find no way to tell symfony about it.
UPDATE:
What I have - 2 different layouts located in templates/layout1 and template/layout2
What I get - my TemplateController (above) returns the active layout path (layout1/)
Now I can edit my twig.yaml to say twig my template path to ../templates/layout1 so I can use render(mysite.html.twig); which is located in layout1 (and layout2) but its not what I want.
What I want - I want to extend the base template path dynamically with my layout paths so that I can use the method render (mysite.html.twig) without editing twig.yaml manually.
What I need - I need the twig or symfony class to edit the main render() method but I can't find the right File. OR: Anyone have an idea which is better to solve this problem.

Answer 1

The render funtion expects the following params:
/**
* Renders a view.
*
* #param string $view The view name
* #param array $parameters An array of parameters to pass to the view
* #param Response $response A response instance
*
* #return Response A Response instance
*
* #final since version 3.4
*/
So as long as you pass the correct view name: #BUNDLE_NAME:RESOURCE_NAME_FOLDER:TWIG_FILE then you should be good to go.
UPDATE:
I think I understand what you need after you provided more details. As no example was provided I will try to work with realistic scenario.
Imagine you have 2 templates, blue and red, they have structure and color differences but the content is mostly the same. I would then have 2 directories under my template folder.
/app
/Resources
/views
/blue
base_template.html.twig
/red
base_template.html.twig (they can have different names it doesn't really matter)
each one would define a base_template where you set your imports and other specifics of the template.
Now on you controller you get the base_template value from the DB as your function already does.
Then in your controller, you can use that value and pass it to your template that will extend it dynamically.
public function indexAction()
{
return $this->render('AppBundle:Home:index.html.twig',["base_template"=>loadTpl()]);
}
Finally in your twig file you would extend the template like this:
{% extends base_template %}
{% block content %}
<div class="container">
My content
</div>
{% endblock %}
Here is a link to : Twig Dynamic Inheritance