javascript - 如何获取在另一个模型中定义的 Mongoose 数据库的架构

Question

这是我的文件夹结构:

+-- express_example
|---- app.js
|---- models
|-------- songs.js
|-------- albums.js
|---- and another files of expressjs

我在文件 song.js 中的代码

var mongoose = require('mongoose')
, Schema = mongoose.Schema
, ObjectId = Schema.ObjectId;

var SongSchema = new Schema({
name: {type: String, default: 'songname'}
, link: {type: String, default: './data/train.mp3'}
, date: {type: Date, default: Date.now()}
, position: {type: Number, default: 0}
, weekOnChart: {type: Number, default: 0}
, listend: {type: Number, default: 0}
});

module.exports = mongoose.model('Song', SongSchema);

这是我在文件 albums.js 中的代码

var mongoose = require('mongoose')
, Schema = mongoose.Schema
, ObjectId = Schema.ObjectId;

var AlbumSchema = new Schema({
name: {type: String, default: 'songname'}
, thumbnail: {type:String, default: './images/U1.jpg'}
, date: {type: Date, default: Date.now()}
, songs: [SongSchema]
});

module.exports = mongoose.model('Album', AlbumSchema);

我怎样才能让albums.js知道SongSchema被定义为AlbumSchema

Answer 1

您可以使用 Mongoose 直接在别处定义模型:

require('mongoose').model(name_of_model)

要在 Albums.js 中获取示例中的架构，您可以这样做:

var SongSchema = require('mongoose').model('Song').schema