Mercurial > hg > isophonics-drupal-site
view core/lib/Drupal/Core/EventSubscriber/RouteAccessResponseSubscriber.php @ 16:c2387f117808
Routine composer update
author | Chris Cannam |
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date | Tue, 10 Jul 2018 15:07:59 +0100 |
parents | 4c8ae668cc8c |
children |
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<?php namespace Drupal\Core\EventSubscriber; use Drupal\Core\Cache\CacheableResponseInterface; use Drupal\Core\Routing\AccessAwareRouterInterface; use Symfony\Component\HttpKernel\Event\FilterResponseEvent; use Symfony\Component\HttpKernel\KernelEvents; use Symfony\Component\EventDispatcher\EventSubscriberInterface; /** * Response subscriber to bubble the route's access result's cacheability. * * During routing, access checking is performed. The corresponding access result * is stored in the Request object's attributes, just like the matching route * object is. In case of a cacheable response, the route's access result also * determined the content of the response, and therefore the cacheability of the * route's access result should also be applied to the resulting response. * * @see \Drupal\Core\Routing\AccessAwareRouterInterface::ACCESS_RESULT * @see \Drupal\Core\Routing\AccessAwareRouter::matchRequest() * @see \Drupal\Core\Routing\AccessAwareRouter::checkAccess() */ class RouteAccessResponseSubscriber implements EventSubscriberInterface { /** * Bubbles the route's access result' cacheability metadata. * * @param \Symfony\Component\HttpKernel\Event\FilterResponseEvent $event * The event to process. */ public function onRespond(FilterResponseEvent $event) { if (!$event->isMasterRequest()) { return; } $response = $event->getResponse(); if (!$response instanceof CacheableResponseInterface) { return; } $request = $event->getRequest(); $access_result = $request->attributes->get(AccessAwareRouterInterface::ACCESS_RESULT); $response->addCacheableDependency($access_result); } /** * {@inheritdoc} */ public static function getSubscribedEvents() { // Priority 10, so that it runs before FinishResponseSubscriber, which will // expose the cacheability metadata in the form of headers. $events[KernelEvents::RESPONSE][] = ['onRespond', 10]; return $events; } }