Question

我有一份MongoDB文件：

{
    "_id" : ObjectId("553e0c2ec9ad2dbe13cc17cc"),
    "country" : "ireland",
    "games" : [
            {
                    "title" : "Test",
                    "draws" : [ ]
            },
            {
                    "title" : "Test 2",
                    "draws" : [ ]
            },
            {
                    "title" : "Test 3",
                    "draws" : [ ]
            }
    ]
}

我想在绘制键下存储多个具有相同结构的对象。现在，如果我想返回测试游戏，我会执行以下Mongo查询：

db.data.find({country:"ireland"},{games:{$elemMatch:{title:"Test"}}})

...返回：

{
    "_id" : ObjectId("553e0c2ec9ad2dbe13cc17cc"),
    "games" : [
            {
                    "title" : "Test",
                    "draws" : [ ]
            }
    ]
}

如何在提取键中输入数据？这是我想要实现的一个例子：

{
    "_id" : ObjectId("553e0c2ec9ad2dbe13cc17cc"),
    "country" : "ireland",
    "games" : [
            {
                    "title" : "Test",
                    "draws" : [{
                        "date":"20150207",
                        "numbers":[10,20,30,40,50,60]
                    },
                    {
                        "date":"20150214",
                        "numbers":[09,07,22,31,39,30]
                    },
                    {
                        "date":"20150221",
                        "numbers":[11,07,22,13,30,01]
                    }]
            },
            {
                    "title" : "Test 2",
                    draws : [{
                        "date":"20150207",
                        "numbers":[03,08,21,19,24,01]
                    },
                    {
                        "date":"20150214",
                        "numbers":[19,17,02,11,19,32]
                    },
                    {
                        "date":"20150221",
                        "numbers":[31,27,12,10,15,11]
                    }]
            },
            {
                    "title" : "Test 3",
                    draws : [{
                        "date":"20150207",
                        "numbers":[10,17,29,33,31,11]
                    },
                    {
                        "date":"20150214",
                        "numbers":[12,17,19,33,31,02]
                    },
                    {
                        "date":"20150221",
                        "numbers":[01,17,32,23,31,01]
                    }]
            }
    ]
}

我尝试使用 upsert 更新（）但每次都在编写新文档。

Answer 1

我使用以下代码插入子文档。

db.data.update({country:"ireland",games:{$elemMatch:{title:"Test"}}}, 
       {
           $push: {
               'games.$.draws': [

               {"date":"20150207",
                "numbers":[10,20,30,40,50,60]}


               ]}

           })

结果如下。

{
    "_id" : ObjectId("553e2a32f077cac2cbb9a033"),
    "country" : "ireland",
    "games" : [ 
        {
            "title" : "Test",
            "draws" : [ 
                [ 
                    {
                        "date" : "20150207",
                        "numbers" : [ 
                            10, 
                            20, 
                            30, 
                            40, 
                            50, 
                            60
                        ]
                    }
                ]
            ]
        }, 
        {
            "title" : "Test 2",
            "draws" : []
        }, 
        {
            "title" : "Test 3",
            "draws" : []
        }
    ]
}

如何在MongoDB文档中的特定级别插入数据？

1 个答案: