Model

Create a model

• define a JavaScript class that represents a specific data structure or entity, such as a user, product

const mongoose = require('mongoose');

//create schema with validations
const ProductSchema = new mongoose.Schema({
  name: {type:String,required:true},
  slug: String,
});

//create model
const Product = mongoose.model('Product', ProductSchema);

//export module
module.exports = Product;

Use a model

• we can now use the model inside a route

const express = require('express');
const router = express.Router();
const Product = require('../models/Product');

//CREATE
router.post('/', async (req,res)=>{
  const result = await Product.create(req.body);
  res.status(201).json({success:true,data:result});
})

//GET
router.get('/', async (req,res)=>{
  const result = await Product.find();
  res.status(200).json({success:true,data:result});
})

//GET 1
router.get('/:id', async (req,res)=>{
  const result = await Product.findById(req.params.id);
  res.status(200).json({success:true,data:result});
})

//UPDATE
router.put('/:id', async (req,res)=>{
  try{
    const result = await Product.findByIdAndUpdate(req.params.id,req.body,{new:true});		//new set to true so that result with updated values
    res.status(200).json({success:true,data:result});
  }catch(error){
    res.status(400).json({success:false,message:error.errorResponse.errmsg});
  }
})

//DELETE
router.post('/', async (req,res)=>{
  const result = await Product.removeOne(req.params.id);
  res.status(200).json({success:true});
})