Bug处理：Mod on _id not allowed

services/search/MongoSearch.php

@@ -134,6 +134,7 @@ class MongoSearch extends Service implements SearchInterface
                             $one['description'] = Yii::$service->fecshoplang->getLangAttrVal($one_description, 'description', $langCode);
                             $one['short_description'] = Yii::$service->fecshoplang->getLangAttrVal($one_short_description, 'short_description', $langCode);
                             $one['sync_updated_at'] = time();
+                            unset($one['_id']);
                             Yii::$service->helper->ar->save($searchModel, $one);
                             if ($errors = Yii::$service->helper->errors->get()) {
                                 // 报错。