Mongoose Express CRUD

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February 3, 2021

6:51 pm

16 Comments on Mongoose Express CRUD

Javascript

const mongoose = require("mongoose");
const conn_str = "mongodb://localhost:27017/tcet"
mongoose.connect(conn_str, { useNewUrlParser: true , useUnifiedTopology: true})
	.then( () => console.log("Connected successfully...") )
	.catch( (err) => console.log(err) );

const userSchema = new mongoose.Schema({
	name: String,
	age: Number,
	city: String,
	state: String
});

const user = new mongoose.model("user", userSchema);

/** Express Mongoose Integration **/

const express = require("express");
const app = express();

app.route("/user")
.get(async (req, res) => {
	let data = await user.find();
	res.send(data);
})
.post(async (req, res) => {
	req_data = req.query;
	let obj = new user(req.query)
	let result = await obj.save();
	res.send(result);
})
.put(async (req, res) => {
	req_data = req.query;
	let result = await user.updateOne({_id: req.query.id}, {$set : {city: req.query.city}})
	res.send(result);
})
.delete(async (req, res) => {
	let result = await user.deleteOne({_id: req.query.id})
	res.send(result);
})

app.listen(8080, () => {
	console.log("listening 8080...");
});

Connect to MongoDB Atlas Cluster

Whitelist your ip / or allow from all 0.0.0.0/0

Get Your Current IP Address from google > what is my ip

Atlas > Security > Network Access > ADD IP ADDRESS

First get the connection string or URI from Atlas

Atlas > Deployment > Databases > Connect > Connect your application > Driver Node.js > Version 2.2.12 or later
const port = 8080;
const mongoose = require("mongoose");
const uri ="get_uri_from_atlas"
mongoose.connect(uri, { useNewUrlParser: true , useUnifiedTopology: true})
	.then( () => console.log("Connected successfully...") )
	.catch( (err) => console.log(err) );

const userSchema = new mongoose.Schema({
	name: String,
	age: Number,
	city: String
});

const user = new mongoose.model("users", userSchema);

/** Express Mongoose Integration **/

const express = require("express");
const app = express();

app.route("/user")
.get(async (req, res) => {
	let data = await user.find();
	res.send(data);
})
.post(async (req, res) => {
	req_data = req.query;
	let obj = new user(req.query)
	let result = await obj.save();
	res.send(result);
})
.put(async (req, res) => {
	req_data = req.query;
	let result = await user.updateOne({_id: req.query.id}, {$set : {city: req.query.city}})
	res.send(result);
})
.delete(async (req, res) => {
	let result = await user.deleteOne({_id: req.query.id})
	res.send(result);
})

app.listen(process.env.PORT || port, () => {
	console.log("listening 8080...");
});

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