feat: decouple logic using events

src/Controller/Teamer/Application/CreateController.php

@@ -5,6 +5,7 @@ namespace App\Controller\Teamer\Application;
 use App\Entity\Application;
 use App\Entity\Assignment;
 use App\Entity\User;
+use App\Event\ApplicationCreatedEvent;
 use App\Form\TeamerApplicationType;
 use Doctrine\ORM\EntityManagerInterface;
 use Psr\Log\LoggerInterface;
@@ -13,11 +14,13 @@ use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Attribute\Route;
 use Symfony\Component\Security\Http\Attribute\IsGranted;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
 
 class CreateController extends AbstractController
 {
     public function __construct(
         private readonly EntityManagerInterface $entityManager,
+        private readonly EventDispatcherInterface $eventDispatcher,
         private readonly LoggerInterface $logger
     ) {
     }
@@ -39,9 +42,10 @@ class CreateController extends AbstractController
             $this->entityManager->persist($application);
             $this->entityManager->flush();
 
-            // Update staffing status of related assignment
-            $assignment->updateStaffingStatus();
-            $this->entityManager->flush();
+            $this->eventDispatcher->dispatch(
+                new ApplicationCreatedEvent($application),
+                ApplicationCreatedEvent::NAME
+            );
 
             $this->addFlash('success', 'Deine Bewerbung wurde entgegengenommen');
             $this->logger->info('Create application', [