Question

我有一个引用另一个对象的模式。

模型/ message.js

var moogoose = require('mongoose');
var Schema = moogoose.Schema;

var schema = new Schema({
           .
  user: {type: Schema.Types.ObjectId, ref: 'User'}
           .
});

module.exports = moogoose.model('Message', schema);

假设user是从数据库中提取的对象我应该将user._id或user对象分配给消息模型的user属性。我尝试了两种方法，它们产生的结果与_id相同，作为用户属性的值。

var message = new Message({
      user: user._id,
});

或：

var message = new Message({
      user: user
});

Answer 1

这是我使用的架构之一。

var mongoose=require('mongoose');
var config=require('./config'); //configuarations and APIS keys stored in this file
mongoose.connect(config.MONGO_URL, {server:{poolSize:10}});
var Schema = mongoose.Schema, ObjectId = Schema.ObjectId;

var users = new mongoose.Schema({
    mobile: { type: String, unique: true },
    hash: String,
    location:{ type:[Number, Number], index:'2d'},
    locName: String,
    created_at: Number,
    image: {type: String, default: 'NONE'},
    role: {type: String, default: 'USER'},
    name: {type: String, default: 'NONE'},
});
exports.users = mongoose.model('users', users);

var comments = new mongoose.Schema({
    uid: { ObjectId, ref: 'users'},
    liked_by: {type: [ObjectId], default: []},
    like_count: {type: Number, default: 0},
    created_at: Number
});

comments.index({spark_id:1, created_at:1});
exports.comments = mongoose.model('comments', comments);

这是其中一项功能

dbase.comments.find({uid: req.body.user._id, function(err, response){
    if(!err){
        //do what you want
    }else{
        //handle error
    }
}).sort({created_at: -1}).skip(count).limit(50).lean();

将_id或Object分配给mongoose.Schema.Types.ObjectId

1 个答案: