Event identifiers for anonymizations

app/Domains/Event/Controllers/SignupController.php

@@ -18,13 +18,13 @@ use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Mail;
 
 class SignupController extends CommonController {
-    public function __invoke(int $eventId, Request $request) {
+    public function __invoke(string $eventId, Request $request) {
         $availableEvents = [];
         foreach ($this->events->getAvailable(false) as $event) {
             $availableEvents[] = $event->toResource()->toArray($request);
         };
 
-        $event = $this->events->getById($eventId, false)?->toResource()->toArray($request);
+        $event = $this->events->getByIdentifier($eventId, false)?->toResource()->toArray($request);
 
         $participantData = [
             'firstname' => '',