+<?php
+
+namespace Drupal\token\Routing;
+
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Routing\RouteSubscriberBase;
+use Drupal\Core\Routing\RoutingEvents;
+use Symfony\Component\Routing\Route;
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * Subscriber for Devel routes.
+ */
+class RouteSubscriber extends RouteSubscriberBase {
+
+ /**
+ * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+ */
+ protected $entityTypeManager;
+
+ /**
+ * @var \Drupal\Core\Extension\ModuleHandlerInterface
+ */
+ protected $moduleHandler;
+
+ public function __construct(EntityTypeManagerInterface $entity_type_manager, ModuleHandlerInterface $module_handler) {
+ $this->entityTypeManager = $entity_type_manager;
+ $this->moduleHandler = $module_handler;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function alterRoutes(RouteCollection $collection) {
+ foreach ($this->entityTypeManager->getDefinitions() as $entity_type_id => $entity_type) {
+ if ($devel_render = $entity_type->getLinkTemplate('token-devel')) {
+ $options = [
+ '_admin_route' => TRUE,
+ '_token_entity_type_id' => $entity_type_id,
+ 'parameters' => [
+ $entity_type_id => [
+ 'type' => 'entity:' . $entity_type_id,
+ ],
+ ],
+ ];
+
+ $route = new Route(
+ $devel_render,
+ [
+ '_controller' => '\Drupal\token\Controller\TokenDevelController::entityTokens',
+ '_title' => 'Devel Tokens',
+ ],
+ [
+ '_permission' => 'access devel information',
+ '_module_dependencies' => 'devel',
+ ],
+ $options
+ );
+
+ $collection->add("entity.$entity_type_id.token_devel", $route);
+ }
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function getSubscribedEvents() {
+ $events = parent::getSubscribedEvents();
+ $events[RoutingEvents::ALTER] = array('onAlterRoutes', 100);
+ return $events;
+ }
+}