一つのモノゴセの例

var express = require('express'),

	mongoose = require('mongoose'); //  mongoose  

//  mongodb   　nodejs      

mongoose.connect('mongodb://localhost/nodejs');



//  Schema    ObjectId   

var Schema = mongoose.Schema,

	ObjectId = Schema.ObjectId;



//      Schema(  ＆  )      mongodb  collection(  )

var commentsShema = new Schema({

	name:String,

	content:String

});

//        comments  collection Ｍodel  　　      mongodb  collection  （     ）

var CommentModel = mongoose.model('comments', commentsShema);



//  Schema

var newsSchema = new Schema({

	title : String,

	source : String,

	content : String,

	comments :{type:[commentsShema], default:[]} //     ，        (collection),            (type:[commentsShema])，        (default:[])

});

//     Model

var NewsModel = mongoose.model('news', newsSchema);



//      

var news = new NewsModel();

news.title = '      ：           ';

news.source = 'http://finance.qq.com/a/20120221/001221.htm';

news.content = '  ，                      ....';

news.save(function(err){

	console.log(err);

});



//    

NewsModel.find({}, function(err,docs){



	if(!err){

		if(docs[0]){

			//      

			var comment = new CommentModel();

			comment.name = 'iblue';

			comment.content = '    !';

			docs[0].comments.push(comment);

			NewsModel.update({_id:docs[0]._id}, {comments:docs[0].comments}, function(err){

				console.log(err);

			});

		}

	}

});