yii\mongodb\Query::from PHP Method

    public function from($collection)
    {
        $this->from = $collection;
        return $this;
    }

 public function actionGetList()
 {
     $currentPage = Yii::$app->request->get("currentPage", 1);
     $pageSize = Yii::$app->request->get("pageSize", 10);
     $offset = ($currentPage - 1) * $pageSize;
     $sortName = "_id";
     $sortDesc = Yii::$app->request->get('sortDesc', 'ASC');
     $sort = $sortName . ' ' . $sortDesc;
     $keyword = Yii::$app->request->get("keyword", '');
     $query = new Query();
     $accountId = $this->getAccountId();
     if ($keyword == '') {
         $records = $query->from('uhkklpOrder')->select(['_id', 'createdAt', 'name', 'mobile', 'restaurantName', 'address', 'businessForm', 'product'])->where(['accountId' => $accountId])->orderBy($sort)->offset($offset)->limit($pageSize)->all();
     } else {
         $records = $query->from('uhkklpOrder')->select(['_id', 'createdAt', 'name', 'mobile', 'restaurantName', 'address', 'businessForm', 'product'])->where(['accountId' => $accountId])->andWhere(['like', 'mobile', $keyword])->orderBy($sort)->offset($offset)->limit($pageSize)->all();
     }
     for ($i = 0; $i < count($records); $i++) {
         $records[$i]['createdAt'] = MongodbUtil::MongoDate2String($records[$i]['createdAt'], 'Y-m-d H:i:s', null);
         $records[$i]['_id'] = (string) $records[$i]['_id'];
     }
     $query = new Query();
     if ($keyword == '') {
         $totalPageCount = $query->from('uhkklpOrder')->where(['accountId' => $accountId])->count();
     } else {
         $totalPageCount = $query->from('uhkklpOrder')->where(['accountId' => $accountId])->andWhere(['like', 'name', $keyword])->count();
     }
     // LogUtil::error(date('Y-m-d h:i:s') . ' $totalPageCount: ' . $totalPageCount);
     Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
     return ['code' => 200, 'list' => $records, 'totalPageCount' => $totalPageCount];
 }