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view core/lib/Drupal/Core/EventSubscriber/ExceptionJsonSubscriber.php @ 19:fa3358dc1485 tip
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author | Chris Cannam |
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date | Wed, 28 Aug 2019 13:14:47 +0100 |
parents | 1fec387a4317 |
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<?php namespace Drupal\Core\EventSubscriber; use Drupal\Core\Cache\CacheableDependencyInterface; use Drupal\Core\Cache\CacheableJsonResponse; use Symfony\Component\HttpFoundation\JsonResponse; use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent; /** * Default handling for JSON errors. */ class ExceptionJsonSubscriber extends HttpExceptionSubscriberBase { /** * {@inheritdoc} */ protected function getHandledFormats() { return ['json', 'drupal_modal', 'drupal_dialog', 'drupal_ajax']; } /** * {@inheritdoc} */ protected static function getPriority() { // This will fire after the most common HTML handler, since HTML requests // are still more common than JSON requests. return -75; } /** * Handles all 4xx errors for JSON. * * @param \Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event * The event to process. */ public function on4xx(GetResponseForExceptionEvent $event) { /** @var \Symfony\Component\HttpKernel\Exception\HttpExceptionInterface $exception */ $exception = $event->getException(); // If the exception is cacheable, generate a cacheable response. if ($exception instanceof CacheableDependencyInterface) { $response = new CacheableJsonResponse(['message' => $event->getException()->getMessage()], $exception->getStatusCode(), $exception->getHeaders()); $response->addCacheableDependency($exception); } else { $response = new JsonResponse(['message' => $event->getException()->getMessage()], $exception->getStatusCode(), $exception->getHeaders()); } $event->setResponse($response); } }