Symfony2 Listener, that will check if a redirect to our page has a route defined.

RedirectResponseListener.php

<?php
/**
 * Symfony2 Listener, that will check if a redirect to our page has a route defined.
 *
 * @author Julius Beckmann
 * @date 27.05.13
 */

namespace h4cc\PennerZoneBundle;

use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
use \Symfony\Bundle\FrameworkBundle\Routing\Router;
use \Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\Routing\Exception\ResourceNotFoundException;

class ResponseListener
{

  private $router;

  public function __construct(Router $router) {
    $this->router = $router;
  }


  public function onKernelResponse(FilterResponseEvent $event)
  {
    $response = $event->getResponse();
    if($response instanceof RedirectResponse) {
      if(!$this->isRedirectToOtherDomain($response)) {
        try {
          $this->matchResponseWithRouter($response);
        }catch(ResourceNotFoundException $e) {
          // Router does not know that url
          $this->redirectToSafePage($response);
        }
      }
    }
  }

  /**
   * @param $response
   * @throws ResourceNotFoundException

   */
  protected function matchResponseWithRouter($response) {
    $url = $response->getTargetUrl();
    $this->router->match($url);
  }

  protected function isRedirectToOtherDomain($response) {
    //TODO: Implement
    return false;
  }

  protected function redirectToSafePage($response) {
    $response->setTargetUrl('/');
  }
}

services.xml

        <service id="acme_demo.filter_response_listener" class="Acme\DemoBundle\ResponseListener">
            <tag name="kernel.event_listener" event="kernel.response" method="onKernelResponse" />
            <argument type="service" id="router" />
        </service>