Support oft parent groups

app/Domains/Event/Actions/UpdateEvent/UpdateEventCommand.php

@@ -2,6 +2,8 @@
 
 namespace App\Domains\Event\Actions\UpdateEvent;
 
+use App\Repositories\EventParticipantRepository;
+
 class UpdateEventCommand {
     public UpdateEventRequest $request;
     public function __construct(UpdateEventRequest $request) {
@@ -26,6 +28,14 @@ class UpdateEventCommand {
         $this->request->event->registration_allowed = $this->request->registrationAllowed;
         $this->request->event->short_registration = $this->request->shortRegistration;
         $this->request->event->swimming_permission_required = $this->request->swimmingPermissionRequired;
+
+        // Umstellen zwischen Local und Parent Group nur ohne Anmeldungen -- sonst stünden in einer Veranstaltung
+        // beide Arten von Antworten nebeneinander.
+        if ($this->request->participantGroupType !== null
+            && !new EventParticipantRepository()->existsForEvent($this->request->event)) {
+            $this->request->event->participant_group_type = $this->request->participantGroupType->value;
+        }
+
         $this->request->event->save();
 
         $this->request->event->resetAllowedEatingHabits();