src/EventSubscriber/ExceptionSubscriber.php line 38

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  1. <?php
  3. // src/EventSubscriber/ExceptionSubscriber.php
  4. namespace App\EventSubscriber;
  6. use App\Exception\ServiceException;
  7. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  8. use Symfony\Component\HttpFoundation\RedirectResponse;
  9. use Symfony\Component\HttpKernel\Event\ExceptionEvent;
  10. use Symfony\Component\HttpKernel\KernelEvents;
  11. use Symfony\Component\HttpFoundation\Session\Flash\FlashBagInterface;
  12. use Symfony\Component\HttpFoundation\Session\Session;
  13. use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
  15. class ExceptionSubscriber implements EventSubscriberInterface
  16. {
  17.     public static function getSubscribedEvents()
  18.     {
  19.         return [
  20.             KernelEvents::EXCEPTION => [
  21.                 ['processException', 10],
  22.                 ['logException', 0],
  23.                 ['notifyException', -10],
  24.             ],
  25.         ];
  26.     }
  28.     public function processException(ExceptionEvent $event)
  29.     {
  30.         // ...
  31.     }
  33.     public function logException(ExceptionEvent $event)
  34.     {
  35.         // ...
  36.     }
  38.     public function notifyException(ExceptionEvent $event)
  39.     {
  40.         $exception = $event->getThrowable();
  42.         if ($exception instanceof ServiceException) {    
  43.             $session = new Session();
  44.             $session->getFlashBag()->add('notice', $exception->getMessage());
  46.             $referrerUrl = $this->getReferrer($event->getRequest()->getRequestUri());
  47.             if (!$referrerUrl) {
  48.                 $referrerUrl = $event->getRequest()->getRequestUri();
  49.             }
  50.         
  51.             $event->setResponse(new RedirectResponse($referrerUrl, 301));
  52.         }
  54.         return;
  55.     }
  57.     private function getReferrer(string $url): ?string
  58.     {
  59.         $parts = parse_url($url);
  60.         if (isset($parts['query'])) {
  61.         parse_str($parts['query'], $query);
  62.             if (isset($query['referrer'])) {
  63.                 return $query['referrer'];
  64.             }
  66.             return null;
  67.         }
  68.     }
  69. }