Basic implementation of payment methods

app/Models/Event.php

@@ -153,6 +153,10 @@ class Event extends InstancedModel
         return $this->belongsToMany(EatingHabit::class, 'event_allowed_eating_habits', 'event_id', 'eating_habit_id');
     }
 
+    public function paymentMethods() : BelongsToMany {
+        return $this->belongsToMany(AvailablePaymentMethod::class, 'event_payment_methods', 'event_id', 'available_payment_method_id')->withTimestamps();
+    }
+
     public function resetContributingLocalGroups() {
         $this->localGroups()->detach();
         $this->save();
@@ -163,6 +167,11 @@ class Event extends InstancedModel
         $this->save();
     }
 
+    public function resetPaymentMethods() {
+        $this->paymentMethods()->detach();
+        $this->save();
+    }
+
     public function resetMangers() {
         $this->eventManagers()->detach();
         $this->save();