@@ -770,7 +770,7 @@ |
||
770 | 770 | * Get column name by order column index. |
771 | 771 | * |
772 | 772 | * @param int $index |
773 | - * @return mixed |
|
773 | + * @return boolean|string |
|
774 | 774 | */ |
775 | 775 | protected function getColumnNameByIndex($index) |
776 | 776 | { |