Node.js 发送post到mongoose时数组的完全id

我需要帮助用这个模型创建数据库。 （对于api mongoose和express，我可以使用mongoshell或mongoose模式）

但是当我将数组发布到MongoDB时，会自动为我的数组创建

\u id:“

”，我可以删除它吗？我需要

\u id

，但对于数组中的文档，我获得如下内容：

{"_id": "5e181fed9fc1883a69797e3a", 
  "hotels":[
    {
    "name" : "Hotel Emperador",
    "stars" : 4,
    "price" : 1596,
    "imagen" : "https://i.ibb.co.jpg",
    "id": 1
    },...]}

 // Option : 1
 const hotelesSchema = new Schema({
    "_id" : Number, // This is optional now
    "nombre": String,
    "direccion": String,
    "telefono": String,
    "estrellas": String,
    "precio": String,
    "imagenes": String
}) 

 /** Option : 2

(Or if you don't even need it at all -> _id will not be created automatically or even if you pass it won't be inserted)

const hotelesSchema = new Schema({
    "nombre": String,
    "direccion": String,
    "telefono": String,
    "estrellas": String,
    "precio": String,
    "imagenes": String
}, { _id: false }) */


const mainSchema = new Schema({
    hoteles: [ hotelesSchema ]
}, { _id: false }); // Adding { _id: false } will not create _id on top level.

const MainColModel = mongoose.model('yourActualCollectionName', mainSchema, 'yourActualCollectionName');

我需要这样的东西，因为这对我来说很难。查找具有上一代码的文档

{
"hoteles": [
    {
        "_id": "5e1217b81c9d440000632fd7",
        "nombre": "Hotel Sonesta",
        "direccion": "Cerritos",
        "telefono": "3152020",
        "estrellas": "5",
        "precio": "850000",
        "imagenes": "https://i.ibb.co/t2Hc8c4/Hotel-Sonesta.jpg"
    },
    {
        "_id": "5e1218211c9d440000632fd8",
        "nombre": "Hotel Soratama",
        "direccion": "Centro",
        "telefono": "3204545",
        "estrellas": "4",
        "precio": "540000",
        "imagenes": "https://i.ibb.co/vcyqQSf/Soratama.jpg"
    },..]}

我知道模型模式可能会有帮助，但尝试过，但没有成功

---

你能帮我吗？

你的模式应该是这样的：

{"_id": "5e181fed9fc1883a69797e3a", 
  "hotels":[
    {
    "name" : "Hotel Emperador",
    "stars" : 4,
    "price" : 1596,
    "imagen" : "https://i.ibb.co.jpg",
    "id": 1
    },...]}

 // Option : 1
 const hotelesSchema = new Schema({
    "_id" : Number, // This is optional now
    "nombre": String,
    "direccion": String,
    "telefono": String,
    "estrellas": String,
    "precio": String,
    "imagenes": String
}) 

 /** Option : 2

(Or if you don't even need it at all -> _id will not be created automatically or even if you pass it won't be inserted)

const hotelesSchema = new Schema({
    "nombre": String,
    "direccion": String,
    "telefono": String,
    "estrellas": String,
    "precio": String,
    "imagenes": String
}, { _id: false }) */


const mainSchema = new Schema({
    hoteles: [ hotelesSchema ]
}, { _id: false }); // Adding { _id: false } will not create _id on top level.

const MainColModel = mongoose.model('yourActualCollectionName', mainSchema, 'yourActualCollectionName');

代码：

const mainColObj = new MainColModel({
            hoteles: [{
                "_id": 123, // If you don't pass it here it won't be created.
                "nombre": "Hotel Sonesta",
                "direccion": "Cerritos",
                "telefono": "3152020",
                "estrellas": "5",
                "precio": "850000",
                "imagenes": "https://i.ibb.co/t2Hc8c4/Hotel-Sonesta.jpg"
            },
            {
                "_id": 456,
                "nombre": "Hotel Soratama",
                "direccion": "Centro",
                "telefono": "3204545",
                "estrellas": "4",
                "precio": "540000",
                "imagenes": "https://i.ibb.co/vcyqQSf/Soratama.jpg"
            }]
        })

let dbResp = await mainColObj.save();

{
    "_id" : ObjectId("5e1bee2a39ae20e06dc116db"), // Won't be created if you add , { _id: false } to mainSchema
    "hoteles" : [ 
        {
            "_id" : 123, // You don't see _id in Option : 2
            "nombre" : "Hotel Sonesta",
            "direccion" : "Cerritos",
            "telefono" : "3152020",
            "estrellas" : "5",
            "precio" : "850000",
            "imagenes" : "https://i.ibb.co/t2Hc8c4/Hotel-Sonesta.jpg"
        }, 
        {
            "_id" : 456, // You don't see _id in Option : 2
            "nombre" : "Hotel Soratama",
            "direccion" : "Centro",
            "telefono" : "3204545",
            "estrellas" : "4",
            "precio" : "540000",
            "imagenes" : "https://i.ibb.co/vcyqQSf/Soratama.jpg"
        }
    ],
    "__v" : 0
}

var mongoose = require('mongoose');

var Schema = mongoose.Schema;

var hotelSchema = new Schema({
    _id: false, //remove this line , it will automatic generate the _id for document which is not harmfull for you case
    hoteles: [{
        _id : true, // even if we do not mention the key _id , it will auto generate the unique _id for every object in the array of hotels
        nombre: {type : String} ,
        direccion: {type : String},
        telefono: {type : String}, 
        estrellas: {type : String},
        precio: {type : String}, 
        imagenes: {type : String}, 
    }],

});


module.exports = mongoose.model('hotel' , hotelSchema);  

结果：

const mainColObj = new MainColModel({
            hoteles: [{
                "_id": 123, // If you don't pass it here it won't be created.
                "nombre": "Hotel Sonesta",
                "direccion": "Cerritos",
                "telefono": "3152020",
                "estrellas": "5",
                "precio": "850000",
                "imagenes": "https://i.ibb.co/t2Hc8c4/Hotel-Sonesta.jpg"
            },
            {
                "_id": 456,
                "nombre": "Hotel Soratama",
                "direccion": "Centro",
                "telefono": "3204545",
                "estrellas": "4",
                "precio": "540000",
                "imagenes": "https://i.ibb.co/vcyqQSf/Soratama.jpg"
            }]
        })

let dbResp = await mainColObj.save();

{
    "_id" : ObjectId("5e1bee2a39ae20e06dc116db"), // Won't be created if you add , { _id: false } to mainSchema
    "hoteles" : [ 
        {
            "_id" : 123, // You don't see _id in Option : 2
            "nombre" : "Hotel Sonesta",
            "direccion" : "Cerritos",
            "telefono" : "3152020",
            "estrellas" : "5",
            "precio" : "850000",
            "imagenes" : "https://i.ibb.co/t2Hc8c4/Hotel-Sonesta.jpg"
        }, 
        {
            "_id" : 456, // You don't see _id in Option : 2
            "nombre" : "Hotel Soratama",
            "direccion" : "Centro",
            "telefono" : "3204545",
            "estrellas" : "4",
            "precio" : "540000",
            "imagenes" : "https://i.ibb.co/vcyqQSf/Soratama.jpg"
        }
    ],
    "__v" : 0
}

var mongoose = require('mongoose');

var Schema = mongoose.Schema;

var hotelSchema = new Schema({
    _id: false, //remove this line , it will automatic generate the _id for document which is not harmfull for you case
    hoteles: [{
        _id : true, // even if we do not mention the key _id , it will auto generate the unique _id for every object in the array of hotels
        nombre: {type : String} ,
        direccion: {type : String},
        telefono: {type : String}, 
        estrellas: {type : String},
        precio: {type : String}, 
        imagenes: {type : String}, 
    }],

});


module.exports = mongoose.model('hotel' , hotelSchema);  

---

您的架构应该如下所示：

{"_id": "5e181fed9fc1883a69797e3a", 
  "hotels":[
    {
    "name" : "Hotel Emperador",
    "stars" : 4,
    "price" : 1596,
    "imagen" : "https://i.ibb.co.jpg",
    "id": 1
    },...]}

 // Option : 1
 const hotelesSchema = new Schema({
    "_id" : Number, // This is optional now
    "nombre": String,
    "direccion": String,
    "telefono": String,
    "estrellas": String,
    "precio": String,
    "imagenes": String
}) 

 /** Option : 2

(Or if you don't even need it at all -> _id will not be created automatically or even if you pass it won't be inserted)

const hotelesSchema = new Schema({
    "nombre": String,
    "direccion": String,
    "telefono": String,
    "estrellas": String,
    "precio": String,
    "imagenes": String
}, { _id: false }) */


const mainSchema = new Schema({
    hoteles: [ hotelesSchema ]
}, { _id: false }); // Adding { _id: false } will not create _id on top level.

const MainColModel = mongoose.model('yourActualCollectionName', mainSchema, 'yourActualCollectionName');

代码：

const mainColObj = new MainColModel({
            hoteles: [{
                "_id": 123, // If you don't pass it here it won't be created.
                "nombre": "Hotel Sonesta",
                "direccion": "Cerritos",
                "telefono": "3152020",
                "estrellas": "5",
                "precio": "850000",
                "imagenes": "https://i.ibb.co/t2Hc8c4/Hotel-Sonesta.jpg"
            },
            {
                "_id": 456,
                "nombre": "Hotel Soratama",
                "direccion": "Centro",
                "telefono": "3204545",
                "estrellas": "4",
                "precio": "540000",
                "imagenes": "https://i.ibb.co/vcyqQSf/Soratama.jpg"
            }]
        })

let dbResp = await mainColObj.save();

{
    "_id" : ObjectId("5e1bee2a39ae20e06dc116db"), // Won't be created if you add , { _id: false } to mainSchema
    "hoteles" : [ 
        {
            "_id" : 123, // You don't see _id in Option : 2
            "nombre" : "Hotel Sonesta",
            "direccion" : "Cerritos",
            "telefono" : "3152020",
            "estrellas" : "5",
            "precio" : "850000",
            "imagenes" : "https://i.ibb.co/t2Hc8c4/Hotel-Sonesta.jpg"
        }, 
        {
            "_id" : 456, // You don't see _id in Option : 2
            "nombre" : "Hotel Soratama",
            "direccion" : "Centro",
            "telefono" : "3204545",
            "estrellas" : "4",
            "precio" : "540000",
            "imagenes" : "https://i.ibb.co/vcyqQSf/Soratama.jpg"
        }
    ],
    "__v" : 0
}

var mongoose = require('mongoose');

var Schema = mongoose.Schema;

var hotelSchema = new Schema({
    _id: false, //remove this line , it will automatic generate the _id for document which is not harmfull for you case
    hoteles: [{
        _id : true, // even if we do not mention the key _id , it will auto generate the unique _id for every object in the array of hotels
        nombre: {type : String} ,
        direccion: {type : String},
        telefono: {type : String}, 
        estrellas: {type : String},
        precio: {type : String}, 
        imagenes: {type : String}, 
    }],

});


module.exports = mongoose.model('hotel' , hotelSchema);  

结果：

const mainColObj = new MainColModel({
            hoteles: [{
                "_id": 123, // If you don't pass it here it won't be created.
                "nombre": "Hotel Sonesta",
                "direccion": "Cerritos",
                "telefono": "3152020",
                "estrellas": "5",
                "precio": "850000",
                "imagenes": "https://i.ibb.co/t2Hc8c4/Hotel-Sonesta.jpg"
            },
            {
                "_id": 456,
                "nombre": "Hotel Soratama",
                "direccion": "Centro",
                "telefono": "3204545",
                "estrellas": "4",
                "precio": "540000",
                "imagenes": "https://i.ibb.co/vcyqQSf/Soratama.jpg"
            }]
        })

let dbResp = await mainColObj.save();

{
    "_id" : ObjectId("5e1bee2a39ae20e06dc116db"), // Won't be created if you add , { _id: false } to mainSchema
    "hoteles" : [ 
        {
            "_id" : 123, // You don't see _id in Option : 2
            "nombre" : "Hotel Sonesta",
            "direccion" : "Cerritos",
            "telefono" : "3152020",
            "estrellas" : "5",
            "precio" : "850000",
            "imagenes" : "https://i.ibb.co/t2Hc8c4/Hotel-Sonesta.jpg"
        }, 
        {
            "_id" : 456, // You don't see _id in Option : 2
            "nombre" : "Hotel Soratama",
            "direccion" : "Centro",
            "telefono" : "3204545",
            "estrellas" : "4",
            "precio" : "540000",
            "imagenes" : "https://i.ibb.co/vcyqQSf/Soratama.jpg"
        }
    ],
    "__v" : 0
}

var mongoose = require('mongoose');

var Schema = mongoose.Schema;

var hotelSchema = new Schema({
    _id: false, //remove this line , it will automatic generate the _id for document which is not harmfull for you case
    hoteles: [{
        _id : true, // even if we do not mention the key _id , it will auto generate the unique _id for every object in the array of hotels
        nombre: {type : String} ,
        direccion: {type : String},
        telefono: {type : String}, 
        estrellas: {type : String},
        precio: {type : String}, 
        imagenes: {type : String}, 
    }],

});


module.exports = mongoose.model('hotel' , hotelSchema);  

---

您的模型应如下所示：

型号：

const mainColObj = new MainColModel({
            hoteles: [{
                "_id": 123, // If you don't pass it here it won't be created.
                "nombre": "Hotel Sonesta",
                "direccion": "Cerritos",
                "telefono": "3152020",
                "estrellas": "5",
                "precio": "850000",
                "imagenes": "https://i.ibb.co/t2Hc8c4/Hotel-Sonesta.jpg"
            },
            {
                "_id": 456,
                "nombre": "Hotel Soratama",
                "direccion": "Centro",
                "telefono": "3204545",
                "estrellas": "4",
                "precio": "540000",
                "imagenes": "https://i.ibb.co/vcyqQSf/Soratama.jpg"
            }]
        })

let dbResp = await mainColObj.save();

{
    "_id" : ObjectId("5e1bee2a39ae20e06dc116db"), // Won't be created if you add , { _id: false } to mainSchema
    "hoteles" : [ 
        {
            "_id" : 123, // You don't see _id in Option : 2
            "nombre" : "Hotel Sonesta",
            "direccion" : "Cerritos",
            "telefono" : "3152020",
            "estrellas" : "5",
            "precio" : "850000",
            "imagenes" : "https://i.ibb.co/t2Hc8c4/Hotel-Sonesta.jpg"
        }, 
        {
            "_id" : 456, // You don't see _id in Option : 2
            "nombre" : "Hotel Soratama",
            "direccion" : "Centro",
            "telefono" : "3204545",
            "estrellas" : "4",
            "precio" : "540000",
            "imagenes" : "https://i.ibb.co/vcyqQSf/Soratama.jpg"
        }
    ],
    "__v" : 0
}

var mongoose = require('mongoose');

var Schema = mongoose.Schema;

var hotelSchema = new Schema({
    _id: false, //remove this line , it will automatic generate the _id for document which is not harmfull for you case
    hoteles: [{
        _id : true, // even if we do not mention the key _id , it will auto generate the unique _id for every object in the array of hotels
        nombre: {type : String} ,
        direccion: {type : String},
        telefono: {type : String}, 
        estrellas: {type : String},
        precio: {type : String}, 
        imagenes: {type : String}, 
    }],

});


module.exports = mongoose.model('hotel' , hotelSchema);  

---

尝试此代码

您的模型应如下所示：

型号：

const mainColObj = new MainColModel({
            hoteles: [{
                "_id": 123, // If you don't pass it here it won't be created.
                "nombre": "Hotel Sonesta",
                "direccion": "Cerritos",
                "telefono": "3152020",
                "estrellas": "5",
                "precio": "850000",
                "imagenes": "https://i.ibb.co/t2Hc8c4/Hotel-Sonesta.jpg"
            },
            {
                "_id": 456,
                "nombre": "Hotel Soratama",
                "direccion": "Centro",
                "telefono": "3204545",
                "estrellas": "4",
                "precio": "540000",
                "imagenes": "https://i.ibb.co/vcyqQSf/Soratama.jpg"
            }]
        })

let dbResp = await mainColObj.save();

{
    "_id" : ObjectId("5e1bee2a39ae20e06dc116db"), // Won't be created if you add , { _id: false } to mainSchema
    "hoteles" : [ 
        {
            "_id" : 123, // You don't see _id in Option : 2
            "nombre" : "Hotel Sonesta",
            "direccion" : "Cerritos",
            "telefono" : "3152020",
            "estrellas" : "5",
            "precio" : "850000",
            "imagenes" : "https://i.ibb.co/t2Hc8c4/Hotel-Sonesta.jpg"
        }, 
        {
            "_id" : 456, // You don't see _id in Option : 2
            "nombre" : "Hotel Soratama",
            "direccion" : "Centro",
            "telefono" : "3204545",
            "estrellas" : "4",
            "precio" : "540000",
            "imagenes" : "https://i.ibb.co/vcyqQSf/Soratama.jpg"
        }
    ],
    "__v" : 0
}

var mongoose = require('mongoose');

var Schema = mongoose.Schema;

var hotelSchema = new Schema({
    _id: false, //remove this line , it will automatic generate the _id for document which is not harmfull for you case
    hoteles: [{
        _id : true, // even if we do not mention the key _id , it will auto generate the unique _id for every object in the array of hotels
        nombre: {type : String} ,
        direccion: {type : String},
        telefono: {type : String}, 
        estrellas: {type : String},
        precio: {type : String}, 
        imagenes: {type : String}, 
    }],

});


module.exports = mongoose.model('hotel' , hotelSchema);  

---

试用此代码

您到底需要什么？那么，您是需要在hotels数组的每个对象中使用

\u id

，还是需要在插入时删除它？这就是问题所在吗？我只需要嵌入数组的对象的id。我的数组不需要。你的意思是你想插入由你生成或分配的

\u id

对象吗？我需要mongo db不自动生成数组id，但为我的嵌套对象生成id。是的。有可能吗？很抱歉，延迟了，我尝试使用你的代码并重新生成了此id“消息”：“文档在保存之前必须有一个_id”//带有{u id:“false”}into mainSchema不允许将请求发布到mongodb。您到底需要什么？那么您需要在hotels数组的每个对象中使用

\u id

，还是需要在插入时删除它？这就是问题所在吗？我只需要嵌入我的对象的id，而我的数组不需要。您的意思是要插入生成了

\u id

的对象吗由您分配？我需要mongo db不自动生成id我的数组，但为我的嵌套对象生成id是的。有可能吗？很抱歉延迟，我尝试使用您的代码并重新收到此“消息”：“文档在保存前必须有_id”//带有{u id:“false”}进入主模式不允许请求发布到mongodb。@Steven Ramirez:如果您需要在顶层发生相同的事情，即，如果您不需要

“\u id”：ObjectId（“5e1bee2a39ae20e06dc116db”）

从上面的

结果

，那么您需要添加

{id:false}

to

mainSchema

@Steven Ramirez:如果您需要在顶层发生相同的事情，即；如果您不需要

“\u id”：ObjectId（“5e1bee2a39ae20e06dc116db”）

从上面的

结果

，那么您需要将

{id:false}

添加到

mainSchema

您好，我尝试了您的代码，但是我的VS（编辑说，_idno it valid为true，然后我更改了其作品的编号，但当我发送post请求时：“消息”：“文档在保存之前必须有一个_id”，因此现在将有文档以及您的

hotels

数组的_id。这是正确的，因此您可以访问所有文档。@StevenRamirezhello，我尝试了您的代码，但我的VS（编辑说，_idno it valid为true，然后我更改了它的作品编号，但当我发送post请求时：“消息”：“文档在保存之前必须有一个_id”，因此现在将有文档以及您的

hotels

数组的_id。这是正确的，因此您可以访问所有文档。@StevenRamirez）