Symfony 2: Setting a cookie for the current session upon login

Question

Is it possible to set a session cookie, upon successful login? An event listener? If so, which event? And how i can access the response object to attach the cookie to it?

Answer 1

You can create an EventListener which listens to the kernel.response Event and modify the response.

namespace Acme\DemoBundle\EventListener
use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
use Symfony\Component\HttpFoundation\Cookie;

class AddMyCookie
{
    public function onKernelResponse(FilterResponseEvent $event)
    {
        $response = $event->getResponse();

        if (/** whatever **/) {
            $response->headers->setCookie(new Cookie('cookie_name', 'cookie_value'));
        }
    }
}

in your services.yml:

parameters:
    acme_demo.add_my_cookie.class: Acme\DemoBundle\EventListener\AddMyCookie

services:
    acme_demo.add_my_cookie.kernel_response_listener:
        class: %acme_demo.add_my_cookie.class%
        tags:
            - { name: kernel.event_listener, event: kernel.response, method: onKernelResponse }

Whatever you need to decide to set the cookie (security_context, usermanager, session, etc.) can be injected trough the DI Container.