fix bug đồng bộ dữ liệu

models/Staff.php

@@ -131,7 +131,9 @@ class Staff extends \yii\db\ActiveRecord {
         if ($this->door_access) {
             $ls = json_decode($this->door_access, true);
             foreach ($ls as $key => $value) {
-                $doors[] = Door::findOne($value)->name;
+                $dInfo = Door::findOne($value);
+                if ($dInfo)
+                    $doors[] = $dInfo->name;
             }
         }
         return implode(", ", $doors);