Express - 4장 : Mongoose 의 CRUD

이 친구가 Mongoose다

1. CRUD란 ? 

- create

- read

- update

- delete

 

2. Cheat Sheet

Schema 세팅

var mongoose = require("mongoose");
var Schema = mongoose.Schema;

var ProductSchema = new Schema({
 
  name: {
    type: String,
    required: true
  },
  brand: {
    type: String,
    required: false
  },
  order: {
    type: Schema.Types.ObjectId,
    ref: "Order"
  }
});

// This creates our model from the above schema, using mongoose's model method
var Product = mongoose.model("Product", ProductSchema);

// Export the Article model
module.exports = Product;

 

연결하기

var mongoose = require("mongoose");
var db = require("./models");
mongoose.connect("mongo_URI", { useNewUrlParser: true });

 

Create

var product = { name: "Soda", brand: "demoBrand" };
db.Product.create(product)
.then(function(dbProduct) {
    console.log(dbProduct);
})
.catch(function(err) {
    console.log(err);
});

 

Read

db.Product.find({}) //모두찾기

db.Product.findOne({ _id: <id> }) //id로 찾기

db.Product.findById(id); // 스키마에서 id로 찾기

 

Update

db.Product.updateOne({ name: 'Soda' }, { brand: 'newBrand' });

db.Product.updateMany({ brand: 'demoBrand' }, { quantity: 500 }); //많은 문서 업데이트

 

Delete

db.Product.deleteOne({ name: 'Soda' });

db.Product.deleteMany({ quantity: { $gte: 100 } });

- 서버 다까먹겠다 ! 복습 달려 !