src/EventSubscriber/MaintenanceSubscriber.php line 34

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  1. <?php
  4. namespace App\EventSubscriber;
  7. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  8. use Symfony\Component\HttpFoundation\Response;
  9. use Symfony\Component\HttpKernel\Event\RequestEvent;
  10. use Symfony\Component\HttpKernel\KernelEvents;
  11. use Twig\Environment;
  12. use Twig\Error\LoaderError;
  13. use Twig\Error\RuntimeError;
  14. use Twig\Error\SyntaxError;
  16. class MaintenanceSubscriber implements EventSubscriberInterface
  17. {
  18.     private $environment;
  20.     private $twig;
  22.     public function __construct(string $env, Environment $twig)
  23.     {
  24.         $this->environment = $env;
  25.         $this->twig = $twig;
  26.     }
  28.     /**
  29.      * @param RequestEvent $event
  30.      * @throws LoaderError
  31.      * @throws RuntimeError
  32.      * @throws SyntaxError
  33.      */
  34.     public function onKernelRequest(RequestEvent $event)
  35.     {
  36.         if ($this->environment !== 'update') {
  37.             return;
  38.         }
  40.         $html = $this->twig->render('maintenance_page.html.twig');
  41.         $response = new Response($html);
  43.         $event->setResponse($response);
  44.     }
  46.     /**
  47.      * @inheritDoc
  48.      */
  49.     public static function getSubscribedEvents()
  50.     {
  51.         return [
  52.             KernelEvents::REQUEST => [
  53.                 ['onKernelRequest', 10],
  54.             ],
  55.         ];
  56.     }
  57. }