Version 1

[yaffs-website] / web / core / lib / Drupal / Core / EventSubscriber / EntityRouteProviderSubscriber.php

diff --git a/web/core/lib/Drupal/Core/EventSubscriber/EntityRouteProviderSubscriber.php b/web/core/lib/Drupal/Core/EventSubscriber/EntityRouteProviderSubscriber.php
new file mode 100644 (file)
index 0000000..36a539d
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+++ b/web/core/lib/Drupal/Core/EventSubscriber/EntityRouteProviderSubscriber.php
@@ -0,0 +1,70 @@
+<?php
+
+namespace Drupal\Core\EventSubscriber;
+
+use Drupal\Core\Entity\EntityManagerInterface;
+use Drupal\Core\Routing\RouteBuildEvent;
+use Drupal\Core\Routing\RoutingEvents;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * Ensures that routes can be provided by entity types.
+ */
+class EntityRouteProviderSubscriber implements EventSubscriberInterface {
+
+  /**
+   * The entity manager.
+   *
+   * @var \Drupal\Core\Entity\EntityManagerInterface
+   */
+  protected $entityManager;
+
+  /**
+   * Constructs a new EntityRouteProviderSubscriber instance.
+   *
+   * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
+   *   The entity manager.
+   */
+  public function __construct(EntityManagerInterface $entity_manager) {
+    $this->entityManager = $entity_manager;
+  }
+
+  /**
+   * Provides routes on route rebuild time.
+   *
+   * @param \Drupal\Core\Routing\RouteBuildEvent $event
+   *   The route build event.
+   */
+  public function onDynamicRouteEvent(RouteBuildEvent $event) {
+    $route_collection = $event->getRouteCollection();
+    foreach ($this->entityManager->getDefinitions() as $entity_type) {
+      if ($entity_type->hasRouteProviders()) {
+        foreach ($this->entityManager->getRouteProviders($entity_type->id()) as $route_provider) {
+          // Allow to both return an array of routes or a route collection,
+          // like route_callbacks in the routing.yml file.
+
+          $routes = $route_provider->getRoutes($entity_type);
+          if ($routes instanceof RouteCollection) {
+            $routes = $routes->all();
+          }
+          foreach ($routes as $route_name => $route) {
+            // Don't override existing routes.
+            if (!$route_collection->get($route_name)) {
+              $route_collection->add($route_name, $route);
+            }
+          }
+        }
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    $events[RoutingEvents::DYNAMIC][] = ['onDynamicRouteEvent'];
+    return $events;
+  }
+
+}