Symfony2 - how can I set custom CORS Headers?

Question

I want to set following Headers for TWIG Template from within my DefaultController:

header(\'Access-Control-Allow-Methods: GET, POST, OPTIONS\');
header(\'Ac         


        

Answer 1

from this article:

CorsListener.php

getResponse()->headers;

        $responseHeaders->set('Access-Control-Allow-Headers', 'origin, content-type, accept');
        $responseHeaders->set('Access-Control-Allow-Origin', '*');
        $responseHeaders->set('Access-Control-Allow-Methods', 'POST, GET, PUT, DELETE, PATCH, OPTIONS');
    }   
}

services.yml

app.cors_listener:
    class:      MyCorp\MyBundle\Listener\CorsListener
    tags:
       - { name: kernel.event_listener, event: kernel.response, method: onKernelResponse }