Question

我有一个像这样的数据集合

 "Name": "....",
  ...
 "RoomStatusDetails": [
 {
   "StatusEntryId": ObjectId("5be1895dbb2c5620c4003ae0"),
   "RoomId": "41964158-0131-7b55-7781-a29084879e1a",
   "CurrentStatus": ObjectId("5bd17295d2ccda11f0007765"),
   "StartDate": ISODate("2018-11-06T05:00:00.0Z"),
   "Notes": "",
   "Discrepancy": "",
   "Waiver": "",
   "TFlight": "",
   "IsActive": "Inactive" 
},
 {
   "StatusEntryId": ObjectId("5be1896cbb2c5620c4003ae1"),
   "RoomId": "41964158-0131-7b55-7781-a29084879e1a",
   "CurrentStatus": ObjectId("5bd17295d2ccda11f0007766"),
   "StartDate": ISODate("2018-11-06T05:00:00.0Z"),
   "Notes": "",
   "Discrepancy": "",
   "Waiver": "",
   "TFlight": "",
   "IsActive": "Active" 
},
 {
   "StatusEntryId": ObjectId("5bf4e8a83250041388000edf"),
   "RoomId": "d72136ac-b295-d4ea-2d32-0f9ef26b7df1",
   "CurrentStatus": ObjectId("5bd17295d2ccda11f0007766"),
   "StartDate": ISODate("2018-11-26T23:00:00.0Z"),
   "Notes": "",
   "Discrepancy": "",
   "Waiver": "",
   "TFlight": "",
   "IsActive": "Active" 
},
 {
   "StatusEntryId": ObjectId("5bf4e8db3250041388000ee0"),
   "RoomId": "4c980185-65eb-eece-8176-7f187eed3132",
   "CurrentStatus": ObjectId("5bd17295d2ccda11f0007765"),
   "StartDate": ISODate("2018-11-18T23:00:00.0Z"),
   "Notes": "",
   "Discrepancy": "",
   "Waiver": "",
   "TFlight": "",
   "IsActive": "Active" 
},
 {
   "StatusEntryId": ObjectId("5bf4e97f3250041388000ee1"),
   "RoomId": "407225eb-2990-263b-4112-068d3ef0e1b2",
   "CurrentStatus": ObjectId("5bd17295d2ccda11f0007768"),
   "StartDate": ISODate("2018-12-05T23:00:00.0Z"),
   "Notes": "",
   "Discrepancy": "",
   "Waiver": "",
   "TFlight": "",
   "IsActive": "Active" 
}

]，

我正在尝试以下代码行

       $this->collection->aggregate(array(

                array(
                    '$project' => array(
                          'RoomStatusDetails' => array(
                            '$filter' => array(
                                'input' => '$RoomStatusDetails',
                                'as' => 'item',
                                'cond' => array(
                                    '$or' => [
                                      ['$eq' => ['$$item.CurrentStatus', new MongoDB\BSON\ObjectID($this->CAOutOfService)]],
                                      ['$eq' => ['$$item.CurrentStatus', new MongoDB\BSON\ObjectID($this->OutOfService)]]
                                    ],
                                  ['$eq' => ['$$item.IsActive', 'Active']]
                                )
                            )
                        ),
                        'Name' => 1,
                        'Address' => 1,
                        'NoOfFloors' => 1,
                        'Image' => 1,
                        'Bay' => 1,
                        'Approved' => 1,
                        'RoomsDetails' => 1,
                        'AllotmentsDetails' => 1,
                        //'TotalNumberOfCapacitiesArray' => 1
                    )
                ),
                ))->toArray();

我正在尝试投影嵌入式文档RoomStatusDetails，并且仅尝试获取其中$ this-> CAOutOfService或$ this-> OutOfService变量分别存在的“当前状态”可以为“ 5bd17295d2ccda11f0007765”或“ 5bd17295d2ccda11f0007766”的那些RoomStatusDetails数据。而他们的IsActive为“有效”。

上面的代码抛出错误“表示表达式的对象必须具有一个完全相同的字段：{$ or：[{$ eq：[\“ $$ item.CurrentStatus \”，ObjectId（'5bd17295d2ccda11f0007769'）]}， {$ eq：[\“ $$ item.CurrentStatus \”，ObjectId（'5bd17295d2ccda11f0007766'）]}]，0：{$ eq：[\“ $$ item.IsActive \”，\“ Active \”]}} “

请帮助！！！

Answer 1

您可以这样构建查询

db.col.aggregate([{
        "$project": {
            "RoomStatusDetails": {
                "$filter": {
                    "input": "$RoomStatusDetails",
                    "as": "stat",
                    cond: {
                        "$and": [{
                                $or: [{
                                        $eq: ["$$stat.CurrentStatus", ObjectId("5bd17295d2ccda11f0007766")]
                                    },
                                    {
                                        $eq: ["$$stat.CurrentStatus", ObjectId("5bd17295d2ccda11f0007765")]
                                    }
                                ]
                            },
                            {
                                $eq: ["$$stat.IsActive", "Active"]
                            }
                        ]
                    }
                }
            }
        }
    }

])

处理“或”和“与”条件以在项目中获取数据

1 个答案: