Added and event and an event dispatch upon voting

src/Controller/AdminFeedbackController.php

@@ -12,6 +12,8 @@ use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpFoundation\JsonResponse;
 use Symfony\Component\HttpFoundation\RequestStack;
 use Symfony\Component\HttpFoundation\Response;
+use Drupal\admin_feedback\Event\VoteEvent;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 
 /**
  * Controller for the admin_feedback module.
@@ -39,6 +41,13 @@ class AdminFeedbackController extends ControllerBase {
    */
   protected $langcode;
 
+  /**
+   * Event Dispatcher Service.
+   *
+   * @var \Symfony\Component\EventDispatcher\EventDispatcherInterface
+   */
+  protected $eventDispatcher;
+
   /**
    * {@inheritdoc}
    */
@@ -46,7 +55,8 @@ class AdminFeedbackController extends ControllerBase {
     return new static(
       $container->get('database'),
       $container->get('request_stack'),
-      $container->get('language_manager')
+      $container->get('language_manager'),
+      $container->get('event_dispatcher')
     );
   }
 
@@ -57,10 +67,11 @@ class AdminFeedbackController extends ControllerBase {
    * @param \Symfony\Component\HttpFoundation\RequestStack $requestStack
    * @param \Drupal\Core\Language\LanguageManagerInterface $languageManager
    */
-  public function __construct(Connection $database, RequestStack $requestStack, LanguageManagerInterface $languageManager) {
+  public function __construct(Connection $database, RequestStack $requestStack, LanguageManagerInterface $languageManager, EventDispatcherInterface $eventDispatcher) {
     $this->database = $database;
     $this->requestStack = $requestStack->getCurrentRequest();
     $this->langcode = $languageManager->getCurrentLanguage()->getId();
+    $this->eventDispatcher = $eventDispatcher;
   }
 
   /**
@@ -171,6 +182,12 @@ class AdminFeedbackController extends ControllerBase {
     $feedback = $this->requestStack->request->get('vote');
     $node_id = $this->requestStack->request->get('node_id');
 
+    // Dispatch a Vote event, in case any module needs to update this with custom logic.
+    $event = new VoteEvent();
+    $event->setNid($node_id);
+    $event->setVote($feedback);
+    $this->eventDispatcher->dispatch(VoteEvent::VOTE_EVENT, $event);
+
     switch ($feedback) {
       case 'yes':
         $feedback = ADMIN_FEEDBACK_YES_VALUE;