Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Core\EventSubscriber;
Chris@0: 
Chris@0: use Drupal\Core\Routing\RouteBuildEvent;
Chris@0: use Drupal\Core\Routing\RoutingEvents;
Chris@0: use Symfony\Component\EventDispatcher\EventSubscriberInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Provides a default value for the HTTP method restriction on routes.
Chris@0:  *
Chris@0:  * Most routes will only deal with GET and POST requests, so we restrict them to
Chris@0:  * those two if nothing else is specified. This is necessary to give other
Chris@0:  * routes a chance during the route matching process when they are listening
Chris@0:  * for example to DELETE requests on the same path. A typical use case are REST
Chris@0:  * web service routes that use the full spectrum of HTTP methods.
Chris@0:  */
Chris@0: class RouteMethodSubscriber implements EventSubscriberInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * Sets a default value of GET|POST for the _method route property.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Routing\RouteBuildEvent $event
Chris@0:    *   The event containing the build routes.
Chris@0:    */
Chris@0:   public function onRouteBuilding(RouteBuildEvent $event) {
Chris@0:     foreach ($event->getRouteCollection() as $route) {
Chris@0:       $methods = $route->getMethods();
Chris@0:       if (empty($methods)) {
Chris@0:         $route->setMethods(['GET', 'POST']);
Chris@0:       }
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public static function getSubscribedEvents() {
Chris@0:     // Set a higher priority to ensure that routes get the default HTTP methods
Chris@0:     // as early as possible.
Chris@0:     $events[RoutingEvents::ALTER][] = ['onRouteBuilding', 5000];
Chris@0:     return $events;
Chris@0:   }
Chris@0: 
Chris@0: }