src/Event/EventSubscriber/CanonicalRedirectSubscriber.php line 40

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  1. <?php
  3. declare(strict_types=1);
  5. namespace App\Event\EventSubscriber;
  7. use App\Exception\CanonicalRedirectException;
  8. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  9. use Symfony\Component\HttpKernel\Event\ExceptionEvent;
  10. use Symfony\Component\HttpFoundation\RedirectResponse;
  11. use Symfony\Component\Routing\RouterInterface;
  13. final class CanonicalRedirectSubscriber implements EventSubscriberInterface
  14. {
  15.     private RouterInterface $router;
  17.     /**
  18.      * @param RouterInterface $router
  19.      */
  20.     public function __construct(RouterInterface $router)
  21.     {
  22.         $this->router = $router;
  23.     }
  25.     /**
  26.      * @inheritDoc
  27.      */
  28.     public static function getSubscribedEvents(): array
  29.     {
  30.         return [
  31.             ExceptionEvent::class => 'onKernelException',
  32.         ];
  33.     }
  35.     /**
  36.      * @param ExceptionEvent $event
  37.      *
  38.      * @return void
  39.      */
  40.     public function onKernelException(ExceptionEvent $event): void
  41.     {
  42.         $exception = $event->getThrowable();
  44.         if (!$exception instanceof CanonicalRedirectException) {
  45.             return;
  46.         }
  48.         $route = $exception->getHeaders()['X-Canonical-Route'];
  49.         $params = json_decode($exception->getHeaders()['X-Canonical-Params'], true);
  51.         $url = $this->router->generate($route, $params);
  53.         $event->setResponse(new RedirectResponse($url, 302));
  54.     }
  55. }