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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);
});