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Symfony 5 maintenance mode
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| MAINTENANCE_MODE=0 |
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| <?php | |
| declare(strict_types=1); | |
| namespace App\EventSubscriber; | |
| use Symfony\Component\EventDispatcher\EventSubscriberInterface; | |
| use Symfony\Component\HttpFoundation\Response; | |
| use Symfony\Component\HttpKernel\Event\RequestEvent; | |
| use Symfony\Component\HttpKernel\KernelEvents; | |
| use Twig\Environment as TwigEnvironment; | |
| class KernelRequestSubscriber implements EventSubscriberInterface | |
| { | |
| private TwigEnvironment $twig; | |
| public function __construct(TwigEnvironment $twig) | |
| { | |
| $this->twig = $twig; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public static function getSubscribedEvents(): array | |
| { | |
| return [ | |
| KernelEvents::REQUEST => [ | |
| ['onMaintenance', \PHP_INT_MAX - 1000], | |
| ], | |
| ]; | |
| } | |
| public function onMaintenance(RequestEvent $event): void | |
| { | |
| /** @var bool $isMaintenance */ | |
| $isMaintenance = \filter_var($_ENV['MAINTENANCE_MODE'] ?? '0', \FILTER_VALIDATE_BOOLEAN); | |
| $isCli = \PHP_SAPI === 'cli'; | |
| if ($isMaintenance && !$isCli) { | |
| $event->setResponse(new Response( | |
| $this->twig->render('maintenance.html.twig'), | |
| Response::HTTP_SERVICE_UNAVAILABLE, | |
| )); | |
| $event->stopPropagation(); | |
| } | |
| } | |
| } |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Site temporarily under maintenance</title> | |
| </head> | |
| <body> | |
| <h1>Site temporarily under maintenance</h1> | |
| <p>Sorry for the inconvenience, we will get back soon!</p> | |
| </body> | |
| </html> |
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