src/EventSubscriber/MaintenanceSubscriber.php line 29

  1. <?php
  3. namespace App\EventSubscriber;
  5. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  6. use Symfony\Component\HttpFoundation\Response;
  7. use Symfony\Component\HttpKernel\Event\RequestEvent;
  8. use Symfony\Component\HttpKernel\KernelEvents;
  9. use Twig\Environment;
  11. class MaintenanceSubscriber implements EventSubscriberInterface
  12. {
  13.     private Environment $twig;
  15.     public function __construct(Environment $twig)
  16.     {
  17.         $this->twig = $twig;
  18.     }
  20.     public static function getSubscribedEvents(): array
  21.     {
  22.         return [
  23.             KernelEvents::REQUEST => [
  24.                 ['onMaintenance', \PHP_INT_MAX - 1000],
  25.             ],
  26.         ];
  27.     }
  29.     public function onMaintenance(RequestEvent $event): void
  30.     {
  31.         /** @var bool $isMaintenance */
  32.         $isMaintenance = \filter_var($_ENV['MAINTENANCE_MODE'] ?? '0', \FILTER_VALIDATE_BOOLEAN);
  34.         if ($isMaintenance) {
  35.             $event->setResponse(new Response(
  36.                 $this->twig->render('maintenance.html.twig'),
  37.                 Response::HTTP_SERVICE_UNAVAILABLE,
  38.             ));
  39.             $event->stopPropagation();
  40.         }
  41.     }
  42. }