node.js - 使用 Mongoose 查询

Question

这是我的结构文件夹
--express_example
|---- app.js
|----型号
|--------歌曲.js
|-------- albums.js
|----以及expressjs的其他文件

song.js

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}
});

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

album.js

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

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

mongoose.model('Album', AlbumSchema);

如何在文件 album.js

中按专辑 ID 放置代码查询专辑

Answer 1

示例:

var mongoose = require('mongoose')
  , Album = mongoose.model('Album'); 

app.get('/posts/:id', function(req, res, next) {
  Album.findById(req.params.id, function(err, album) {
    // album is available here
  });      
});

参见http://mongoosejs.com/docs/finding-documents.html了解有关查找文档的更多信息。

PS:这是我第三次回答你的问题了:)