Node.js mongoose操作mongoDB, 注册静态方法(statics)


demo.js:

var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/test');

var db = mongoose.connection;  // 获取数据库的连接对象。
db.once('open', function (callback) {
    console.log("数据库成功打开");
});

// Schema 博客的结构 (表结构)
var blogSchema = new mongoose.Schema({
    title:  String,
    author: String,
    body:   String,
    comments: [{ body: String, date: Date }],
    date: { type: Date, default: Date.now },
    hidden: Boolean,
    meta: {
        votes: Number,
        favs:  Number
    }
});

// 注册静态方法(statics)  (实例方法用methods)
blogSchema.statics.findByTitle = function(mytitle,callback){
    return this.find({title: mytitle},callback);
}

var Blog = mongoose.model('Blog', blogSchema);  // 根据schema创建模型(类)

// 调用静态方法
Blog.findByTitle('博客标题',function(err,blog) {
    console.log(blog);
});


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转载自blog.csdn.net/houyanhua1/article/details/80381631
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