mongoose系列——几行代码实现CRUD

1. nodejs 确实好用，mongoose封装了mongodb，代码很简洁。

const mongoose = require('mongoose');
 
mongoose.connect("mongodb://localhost/xinliao");
 
var Workshop = mongoose.model('Workshop', new mongoose.Schema({test: String}));
Workshop.find({}).exec((err, resp) => {
    console.log(resp);
})
 
data = new Workshop({
    test: 'safasdfa111111'
})
data.save((err, resp) => {
    console.log(resp);
})

　　这几行代码就可以实现 查询，和插入功能了，确实方便。

完整的代码如下：

 const mongoose = require('mongoose');
 mongoose.connect("mongodb://localhost/xinliao");
 
 var Workshop = mongoose.model('Workshop', new mongoose.Schema({zzz: String}));
 
 //read
 Workshop.find({}).exec((err, resp) => {
     console.log(resp);
 })
 
 //create
 new Workshop({
     zzz: 'ljl'
 }).save((err, res) => {
     console.log(res);
 })
 
 //update
 Workshop.find({_id: "5c3340d4ead83930960170f0"}).exec((err, res) => {
     console.log(res);
     if(res.length){
         res[0].zzz ="alias_ljl";
         res[0].save((err, res) => {
             console.log('updadte success', res);
         })
 
     }
    })
 //delete
 Workshop.deleteOne({_id: "5c3340a1bf097c30727d9cfb"}).exec((err, res) => {
     console.log(res);
 });