@@ -357,4 +357,23 @@ class WeinanlieferungReservationContainerListener

             $this->eventDispatcher->dispatch($event, CheckInCompletedEvent::NAME);

         }

     }

+

+    /**

+     * @Callback (table="tl_vr_wa_reservation", target="config.onload")

+     */

+    public function onLoadCallback(DataContainer $dc)

+    {

+        if ($_GET['act'] == 'edit' && ($reservation = WeinanlieferungReservationModel::findByPk($dc->id)) !== null && $reservation->checked_in_export_generated)

+        {

+            foreach ($GLOBALS['TL_DCA'][$dc->table]['fields'] as &$field)

+            {

+                $field['eval']['disabled'] = true;

+                $field['eval']['readonly'] = true;

+                if (!empty($field['eval']['chosen']))

+                {

+                    $field['eval']['chosen'] = false;

+                }

+            }

+        }

+    }

 }