mongoose 常用数据库操作 更新

　更新 

　　Model.update(conditions, update, [options], [callback])

db.js

var mongoose = require('mongoose');
mongoose.connect('mongodb://127.0.0.1:27017/whhhh', { useMongoClient: true });
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function (callback) {
    console.log("数据库成功连接");
});
module.exports = db;

user.js

var mongoose = require('mongoose');
var db = require("./db.js");
  var   Schema=mongoose.Schema;

var UserSchema = new mongoose.Schema({
    username:{type:String},
    usersex:{type:String},
    userage:{type:Number}
});

module.exports = mongoose.model('User',UserSchema);

try.js

var User = require("./user.js");


function update(){
    var wherestr = {'username' : 'zhangming'};
    var updatestr = {'userage': '20'};

    User.update(wherestr, updatestr, function(err, res){
        if (err) {
            console.log("Error:" + err);
        }
        else {
            console.log("Res:" + res);
        }
    })
}

update();

更新前：

更新后：

findByIdAndUpdate，这种比较有指定性，就是根据_id

　　Model.findByIdAndUpdate(id, [update], [options], [callback])

try.js

var User = require("./user.js");


function findByIdAndUpdate() {
    var id='59fa714f16ee5b557824b8e5';
    var updatestr={'usersex':'nu'};


    User.findByIdAndUpdate (id,updatestr,function(err,res)
    {
        if (err) {
            console.log("Error:" + err);
        }
        else {
            console.log("Res:" + res);
        }
    }
)

}
findByIdAndUpdate();

效果：

在webstorm:

 在robmongo工具中查看

2017-11-02  09:24:06