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<?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;
}
}