mongodb - Mongoose 更新参数为空

Question

初始化 ' update = {'$inc': {"Prodects.$.price": 1}},'

但无法传入update 参数中, 结果为'$inc': {} ,

版本号

node v6.6.0 
"mongoose": "^4.7.5",
MongoDB shell version v3.4.0

---

app.js

#开启调试模式
var mongoose = require('mongoose').set('debug', true);;

router.js

router.get('/test', function(req, res, next){

var conditions = {"Prodects.id": "2"},
          update =  {'$inc': {"Prodects.$.price": 1}},
          options =  {upsert:true};
          
      CartModel.update(conditions, update, options, function(err) {
      });
});

终端显示第二个参数的数据为空, 但是声明的是一个对象

hotnode  node process restarted

{ '$inc': { 'Prodects.$.price': 1 } }
Mongoose: carts.update({ 'Prodects.id': '2' }, { '$inc': {}, '$setOnInsert': { __v: 0 } }, { upsert: true })

第二个参数 ---- '$inc': {} , 初始化 ' update = {'$inc': {"Prodects.$.price": 1}},'

以至于无法更新数据库中的数据

Answer 1

A summary of problems encountered by Mongoose

var conditions = {"Prodects.id": "2"},
          update =  {'$inc': {"Prodects.$.price": 1}},
          options =  {upsert:true};

      CartModel.update(conditions, update, options, function(err) {
      });
});

Print results

{ '$inc': { 'Prodects.$.price': 1 } }
Mongoose: carts.update({ 'Prodects.id': '2' }, { '$inc': {}, '$setOnInsert': { __v: 0 } }, { upsert: true })

The following methods are available

 Model.collection.update(conditions, update, function(err, result){
          res.send(result)
        });

Answer 2

Mongoose’s documentation is a bit too concise, so there are many usage problems.

I hope everyone can work together to compile some good Chinese documents for Mongoose.

Love MongoDB! Have Fun!