CoContent - проверка уникальности url + catrgory_id

common/modules/content/models/CoContent.php

@@ -125,7 +125,7 @@ class CoContent extends \common\components\ActiveRecordModel
             [['file'], 'file', 'skipOnEmpty' => true, 'extensions' => 'png, jpg, jpeg, gif'],
             [['url', 'type', 'priority'], 'required'],
             [['url'], 'string', 'max' => 250],
-            [['url'], 'unique'],
+            [['url'], 'unique', 'targetAttribute' => ['url', 'category_id']],
             [['category_id', 'custom'], 'safe'],
         ];
     }