规格bug修改

@@ -121,7 +121,7 @@ class Style extends Backend
                 $params = $this->preExcludeFields($params);
 
                 if ($params['pid'] != $row['pid']) {
-                    $childrenIds = Tree::instance()->init(collection(\app\common\model\style::select())->toArray())->getChildrenIds($row['id'], true);
+                    $childrenIds = Tree::instance()->init(collection($this->model->select())->toArray())->getChildrenIds($row['id'], true);
                     if (in_array($params['pid'], $childrenIds)) {
                         $this->error(__('父组别不能是它自己'));
                     }