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annotate core/lib/Drupal/Core/EventSubscriber/RenderArrayNonHtmlSubscriber.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 | 4c8ae668cc8c |
children |
rev | line source |
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Chris@0 | 1 <?php |
Chris@0 | 2 |
Chris@0 | 3 namespace Drupal\Core\EventSubscriber; |
Chris@0 | 4 |
Chris@0 | 5 use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
Chris@0 | 6 use Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent; |
Chris@0 | 7 use Symfony\Component\HttpKernel\Exception\NotAcceptableHttpException; |
Chris@0 | 8 use Symfony\Component\HttpKernel\KernelEvents; |
Chris@0 | 9 |
Chris@0 | 10 /** |
Chris@0 | 11 * Throws 406 if requesting non-HTML format and controller returns render array. |
Chris@0 | 12 */ |
Chris@0 | 13 class RenderArrayNonHtmlSubscriber implements EventSubscriberInterface { |
Chris@0 | 14 |
Chris@0 | 15 /** |
Chris@0 | 16 * Throws an HTTP 406 error if client requested a non-HTML format. |
Chris@0 | 17 * |
Chris@0 | 18 * @param \Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent $event |
Chris@0 | 19 * The event to process. |
Chris@0 | 20 */ |
Chris@0 | 21 public function onRespond(GetResponseForControllerResultEvent $event) { |
Chris@0 | 22 $request = $event->getRequest(); |
Chris@0 | 23 $result = $event->getControllerResult(); |
Chris@0 | 24 |
Chris@0 | 25 // If this is a render array then we assume that the router went with the |
Chris@0 | 26 // generic controller and not one with a format. If the format requested is |
Chris@0 | 27 // not HTML though, we can also assume that the requested format is invalid |
Chris@0 | 28 // so we provide a 406 response. |
Chris@0 | 29 if (is_array($result) && $request->getRequestFormat() !== 'html') { |
Chris@0 | 30 throw new NotAcceptableHttpException('Not acceptable format: ' . $request->getRequestFormat()); |
Chris@0 | 31 } |
Chris@0 | 32 } |
Chris@0 | 33 |
Chris@0 | 34 /** |
Chris@0 | 35 * {@inheritdoc} |
Chris@0 | 36 */ |
Chris@0 | 37 public static function getSubscribedEvents() { |
Chris@0 | 38 $events[KernelEvents::VIEW][] = ['onRespond', -10]; |
Chris@0 | 39 return $events; |
Chris@0 | 40 } |
Chris@0 | 41 |
Chris@0 | 42 } |