diff core/lib/Drupal/Core/EventSubscriber/RouteMethodSubscriber.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/EventSubscriber/RouteMethodSubscriber.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,45 @@
+<?php
+
+namespace Drupal\Core\EventSubscriber;
+
+use Drupal\Core\Routing\RouteBuildEvent;
+use Drupal\Core\Routing\RoutingEvents;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * Provides a default value for the HTTP method restriction on routes.
+ *
+ * Most routes will only deal with GET and POST requests, so we restrict them to
+ * those two if nothing else is specified. This is necessary to give other
+ * routes a chance during the route matching process when they are listening
+ * for example to DELETE requests on the same path. A typical use case are REST
+ * web service routes that use the full spectrum of HTTP methods.
+ */
+class RouteMethodSubscriber implements EventSubscriberInterface {
+
+  /**
+   * Sets a default value of GET|POST for the _method route property.
+   *
+   * @param \Drupal\Core\Routing\RouteBuildEvent $event
+   *   The event containing the build routes.
+   */
+  public function onRouteBuilding(RouteBuildEvent $event) {
+    foreach ($event->getRouteCollection() as $route) {
+      $methods = $route->getMethods();
+      if (empty($methods)) {
+        $route->setMethods(['GET', 'POST']);
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    // Set a higher priority to ensure that routes get the default HTTP methods
+    // as early as possible.
+    $events[RoutingEvents::ALTER][] = ['onRouteBuilding', 5000];
+    return $events;
+  }
+
+}