如何在猫鼬中更新嵌套数组值答案

【问题标题】：How to update nested array value in mongoose如何在猫鼬中更新嵌套数组值
【发布时间】：2017-05-19 22:24:30
【问题描述】：

如何使用 express 和 mongoose 更新嵌套数组值，其中是多维数组，需要更新单个对象键值。这是我的数据模型

{
"_id" : ObjectId("5847b92a20352925039432de"),
"user" : {
    "email" : "email@mail.io",
    "fullName" : "Name"
}
"availabilities" : [
    [
        {
            "status" : "Close",
            "end" : "03:00",
            "start" : "00:00",
            "day" : "Sunday",
            "id" : "Sunday00:00"
        },
        {
            "status" : "Close",
            "end" : "06:00",
            "start" : "03:00",
            "day" : "Sunday",
            "id" : "Sunday03:00"
        },
        {
            "status" : "Open",
            "end" : "09:00",
            "start" : "06:00",
            "day" : "Sunday",
            "id" : "Sunday06:00"
        },
        {
            "status" : "Open",
            "end" : "12:00",
            "start" : "09:00",
            "day" : "Sunday",
            "id" : "Sunday09:00"
        },
        {
            "status" : "Open",
            "end" : "15:00",
            "start" : "12:00",
            "day" : "Sunday",
            "id" : "Sunday12:00"
        },
        {
            "status" : "Open",
            "end" : "18:00",
            "start" : "15:00",
            "day" : "Sunday",
            "id" : "Sunday15:00"
        },
        {
            "status" : "Open",
            "end" : "21:00",
            "start" : "18:00",
            "day" : "Sunday",
            "id" : "Sunday18:00"
        },
        {
            "status" : "Open",
            "end" : "24:00",
            "start" : "21:00",
            "day" : "Sunday",
            "id" : "Sunday21:00"
        }
    ],
    [
        {
            "status" : "Close",
            "end" : "03:00",
            "start" : "00:00",
            "day" : "Monday",
            "id" : "Monday00:00"
        },
        {
            "status" : "Close",
            "end" : "06:00",
            "start" : "03:00",
            "day" : "Monday",
            "id" : "Monday03:00"
        },
        {
            "status" : "Open",
            "end" : "09:00",
            "start" : "06:00",
            "day" : "Monday",
            "id" : "Monday06:00"
        },
        {
            "status" : "Open",
            "end" : "12:00",
            "start" : "09:00",
            "day" : "Monday",
            "id" : "Monday09:00"
        },
        {
            "status" : "Open",
            "end" : "15:00",
            "start" : "12:00",
            "day" : "Monday",
            "id" : "Monday12:00"
        },
        {
            "status" : "Open",
            "end" : "18:00",
            "start" : "15:00",
            "day" : "Monday",
            "id" : "Monday15:00"
        },
        {
            "status" : "Open",
            "end" : "21:00",
            "start" : "18:00",
            "day" : "Monday",
            "id" : "Monday18:00"
        },
        {
            "status" : "Open",
            "end" : "24:00",
            "start" : "21:00",
            "day" : "Monday",
            "id" : "Monday21:00"
        }
    ]
]

}

在这里，我想更改可用性数组中的第一个索引，然后更改第一个索引对象状态键值。即：{ "status" : "Close", "end" : "03:00", "start" : "00:00", "day" : "Sunday", "id" : "Sunday00:00" }

【问题讨论】：

描述此架构的 model.js 的名称是什么？？

标签： arrays node.js mongodb mongoose mongoose-schema

【解决方案1】：

您可以使用positional $ operator 或索引号来定位数组条目。

db.students.update(
   { _id: 4, "grades.grade": 85 },
   { $set: { "grades.$.std" : 6 } }
)

【讨论】：

请用我的模型举个例子，因为我没有固定索引，它会根据场景动态变化。
@OsmanGoniNahid 您需要事先知道要查找的索引。如果这样做，只需使用索引号即可。
这种情况有没有办法使用Mongoose动态查找索引？

【解决方案2】：

yourMoongosemodel.findByIdAndUpdate(id : giveId, 
 { $push: {
         availabilities[0].status : 'open'
          }
 }, {new : true}, function(err, data){
 console.log(data);
  } )

【讨论】：

通常最好在您的帖子中添加解释代码如何工作的说明。这使新开发人员能够了解代码的作用。