CODEWITHSUNDEEP
symfony
David
David

Reputation: 2783

How to redirect 500 within an event listener?

I have a defined listener watching the onKernelException in which errors could occur.

class SpecificExceptionListener
{
    public function onKernelException(GetResponseForExceptionEvent $event)
    {
        $exception = $event->getException();
        if ($exception instanceof SpecificExceptionToBeProcessed) {
            // ...
            if ($somethingWentWrong) {
                // here, redirect to the default/overriden Symfony error page
            }
            // ...
        }
    }
}

How do you redirect to the standard/customized error page in case of an error?

Upvotes: 1

Views: 1033

Answers (1)

David
David

Reputation: 2783

For those who might be interested, here's how it can be done:

use Symfony\Bundle\TwigBundle\TwigEngine;
use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
use Symfony\Component\HttpFoundation\Response;
// ...

class SpecificExceptionListener
{
    protected $templating;

    public function __construct(TwigEngine $templating)
    {
        $this->templating = $templating;
    }

    public function onKernelException(GetResponseForExceptionEvent $event)
    {
        $exception = $event->getException();
        if ($exception instanceof SpecificExceptionToBeProcessed) {
            // ...
            if ($somethingWentWrong) {
                // build response to display Symfony default error page
                // replace by your own template if needed
                $response = new Response();
                $response->setContent(
                    $this->templating->render('TwigBundle:Exception:error.html.twig')
                );

                $event->setResponse($response);

                return;
            }
            // ...
        }
    }
}

Upvotes: 1

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