Can't get Exception Controller working - Symfony2 - php

Question

namespace etc...
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Bundle\TwigBundle\Controller\ExceptionController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\HttpKernel;
use Symfony\Component\HttpKernel\Exception\FlattenException;
use Symfony\Component\HttpKernel\Log\DebugLoggerInterface;
use Symfony\Component\HttpFoundation\Response;
class MyExceptionController extends ExceptionController
{
public function showAction(Request $request, FlattenException $exception, DebugLoggerInterface $logger = null, $format = 'html')
{
}
}
Doing nothing inside the controller returns a "Uncaught exception 'Symfony\Component\Routing\Exception\ResourceNotFoundException' in..." error. Not sure if that's right, or if that's another problem. I'd expect it to just do the usual action.
I just need to do it so it shows a specified route exactly as it would if I went to domain.com/page.
I've tried this:
$httpKernel = $this->container->get('kernel');
$response = $httpKernel->forward('AcmeMyBundle:Default:pageAction');
$this->setResponse(new Response($response));
...but get this error:
Call to a member function get() on a non-object in...

Answer 1

Your code looks similar to something I did yesterday. I wanted to get all NotFoundHttpException Exception and try to forward them to a default controller. I achieved this with an exception listener like this:
<?php
namespace Acme\MyBundle\Listener;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
class NotFoundHttpExceptionListener
{
protected $container;
public function setContainer($container)
{
$this->container = $container;
}
public function onKernelException(GetResponseForExceptionEvent $event)
{
$exception = $event->getException();
if ($exception instanceof NotFoundHttpException) {
$httpKernel = $this->container->get('http_kernel');
$response = $httpKernel->forward(
'AcmeMyBundle:Controller:action',
array(
'uri' => $_SERVER['REQUEST_URI'],
)
);
$response->headers->set('X-Status-Code', '200');
$event->setResponse($response);
$event->stopPropagation();
}
}
}
Note that X-Status-Code is necessary if you want to return another status code than 404 because the handleException method in HttpKernel will use this to set the final status code and removes it from the header section.
My services.yml looks something like this:
notfoundhttp.exception.listener:
class: Acme\MyBundle\Listener\NotFoundHttpExceptionListener
calls:
- [ setContainer, [#service_container] ]
tags:
- { name: kernel.event_listener, event: kernel.exception, method: onKernelException }