Question

我有两个系列：＆＃39;预订＆＃39;和＆＃39;用户＆＃39;。我想加入来自booking和user的数据，其中usrLastname按升序排序。

以下是样本数据。

booking:- {"_id": ObjectId("59a00979bb4d731037000029"),
   "cabinname": "xxxx",
   "user": ObjectId("57877d23049ac1b819000029"),
}

user:- { "_id": ObjectId("578610de049ac1741d000029"),
   "usrName": "xxxxx",
   "usrFirstname": "xx",
   "usrLastname": "xxxx",
}

但排序不起作用 - 它不会对asc或desc进行排序。

这是我的代码

$results = $collection->aggregate(array(
       array( '$match' => array('status'=>array('$in' => array('1', '4')),'is_delete' => 0,'cabinname'=>$eachcabin['name'],'checkin_from'=> array('$lte' => new  MongoDate()),'reserve_to'=>array('$gt' => new  MongoDate()))),
       array( '$lookup' => array(
         'from' => 'user',
         'localField' => 'user',
         'foreignField' => '_id',
         'as' => 'u'
       )),
       array( '$unwind' =>  '$u'),
       array( '$sort' => array(
         'u.usrLastname' => -1, 
       )),
     ));'

Answer 1

此代码适用于我：

$mongo = new \MongoClient();
$db = MASTER_DB_NAME;
$table = $this->__table;
$c = $mongo->$db->selectCollection($table);
$search_array['deletedAt'] = "";
$pipeline = array(
    array(
        '$match' => $search_array
    ),
    array(
        '$lookup' => array('from' => "stm_userDetails",
            'localField' => "fkUserId",
            'foreignField' => "_id",
            'as' => "userArray",
        ),
    ),
    array(
        '$addFields' => array( 'userArray' => 
            array('$arrayElemAt' => array(array('$filter' => array('input' => '$userArray', 'as' => 'comp', 'cond' => array('$eq' => array('$$comp.fkUserId', $UserId)))),0))),
    ),
    array(
        '$unwind' => '$userArray',
    ),
    array(
        '$sort' => array( 'addedAt' => -1 ),
    ),
);
$cursor = $c->aggregate($pipeline);
return $cursor;

希望这可以帮到你。：）

$ sort的$ lookup无法正常工作

1 个答案: