貓鼬模式如何添加數組

Question

我想知道如何在Moongoose模式中添加字符串數組。

我有以下代碼，但無法正常工作：

var message = new Schema({
    topic: String,
    content: String,
    restriction:String,
    sender:String,
    reciever:String,
    users:[String],
    read:{type: String, default: 'no'},
    like:{ type: Number, default: 0 },
    created_at: {type: Date, default: Date.now}
});

我說的是users 。 你能幫我嗎？

Answer 1

將您在評論和主要帖子中所說的話匯總在一起，我不禁認為您缺少貓鼬的建模步驟。

首先，定義架構：

const mongoose = require('mongoose');
const Schema = mongoose.Schema;

var MessageSchema = new Schema({
    topic: String,
    content: String,
    restriction:String,
    sender:String,
    reciever:String,
    users:[String],
    read:{type: String, default: 'no'},
    like:{ type: Number, default: 0 },
    created_at: {type: Date, default: Date.now}
});

然后，您必須告訴貓鼬：

const Message = mongoose.model('Message', MessageSchema);

然后，您可以創建一個實例以將數據放入：

mongoose.connect('mongodb://localhost:27017/mydb'); // assuming that's a working mongo instance
let message = new Message();
message.users.push('Juliana');
message.save((e,u) => { console.log('New user saved!'); });

如果我寫錯了，請發布更多有關無法正常工作的信息。

Answer 2

var message = new Schema({
      topic: String,
      content: String,
      restriction:String,
      sender:String,
      reciever:String,
      users:[{
        type: String
      }],
      read:{type: String, default: 'no'},
      like:{ type: Number, default: 0 },
      created_at: {type: Date, default: Date.now}
    });

Answer 3

嘗試這個

var message = new Schema({
      topic: String,
      content: String,
      restriction:String,
      sender:String,
      reciever:String,
      users:[
      {name: String}],
      read:{type: String, default: 'no'},
      like:{ type: Number, default: 0 },
      created_at: {type: Date, default: Date.now}

    });