MongoDB Login and Registration with Node js Express
Create a login and registration system using node js, express, and a MongoDB database by following the instructions below:
Install the Node JS Express App and Modules first.
Connect Node Express Js App to MongoDB in Step 2
Step 3: Make a Model
Step 4: In app.js, import modules and create routes.
Step 5: Create Login and Registration Views in
Step 6: Start the Development Server
Step 1 – Install Node JS Express App and Modules
Execute the following command on terminal to create new directory for node js login and registration system with mongodb:
express --view=ejs myApp
Then execute the following command to enter your myApp app directories, So open your cmd and run the following command:
cd myApp
Your node express js app structure looks like:
Install some required node module; so open again your cmd and run the following commands:
npm install
npm install express-flash --save
npm install express-session --save
npm install mongoose
npm install passport passport-local --save
npm install passport-local-mongoose --save
npm install body-parser --save
express-flash
Flash is an extension of connect-flash with the ability to define a flash message and render it without redirecting the request.
express-session
Express.js uses a cookie to store a session id.
body-parser
Body-parser allows express to read the body and then parse that into a JSON object that we can understand.
Passport:
Passport is authentication middleware for Node. js. Extremely flexible and modular, Passport can be unobtrusively dropped in to any Express-based web application. A comprehensive set of strategies support authentication using a username and password, Facebook, Twitter, and more.
Mongoose:
Mongoose is an Object Data Modeling (ODM) library for MongoDB and Node.js. It manages relationships between data, provides schema validation, and is used to translate between objects in code and the representation of those objects in MongoDB.
Step 2 – Connect Node js Express with MongoDB
Create a new file name database.js; so visit your app root directory and create new file name database.js. Then add the following code into to connect node js express app with mongoDB database:
|
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/node-mongodb', {useNewUrlParser: true});
var conn = mongoose.connection;
conn.on('connected', function() {
console.log('database is connected successfully');
});
conn.on('disconnected',function(){
console.log('database is disconnected successfully');
})
conn.on('error', console.error.bind(console, 'connection error:'));
module.exports = conn; |
Step 3 – Create Model
Create model; so visit your app directory and create directory name Models. And inside this directory; create a userModel.js file and then add the following code into it:
|
const mongoose = require("../database");
// create an schema
var userSchema = new mongoose.Schema({
name: String,
password: String,
email:String
});
var userModel=mongoose.model('users',userSchema);
module.exports = mongoose.model("Users", userModel); |
Step 4 – Import Modules and Create routes in app.js
Import modules and create login and registration routes in app.js file; So visit your app root directory and open app.js file in any text editor; then add the following code into it:
|
var express = require("express");
var mongoose = require("mongoose");
var passport = require("passport");
var bodyParser = require("body-parser");
var LocalStrategy = require("passport-local");
var passportLocalMongoose = require("passport-local-mongoose");
var User = require("./models/userModel");
var app = express();
app.set("view engine", "ejs");
app.use(bodyParser.urlencoded({ extended: true }));
app.use(require("express-session")({
secret: "node js mongodb",
resave: false,
saveUninitialized: false
}));
app.use(passport.initialize());
app.use(passport.session());
passport.use(new LocalStrategy(User.authenticate()));
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());
//=====================
// ROUTES
//=====================
// Showing home page
app.get("/", function (req, res) {
res.render('register', {
title: 'Registration Page',
name: '',
email: '',
password: ''
})
});
// Showing secret page
app.get("/home", isLoggedIn, function (req, res) {
res.render("home");
});
// Showing register form
app.get("/register", function (req, res) {
res.render('register', {
title: 'Registration Page',
name: '',
email: '',
password: ''
})
});
// Handling user signup
app.post("/register", function (req, res) {
var email = req.body.email
var password = req.body.password
User.register(new User({ email: email }),
password, function (err, user) {
if (err) {
console.log(err);
return res.render("register");
}
passport.authenticate("local")(
req, res, function () {
req.flash('success', 'You have logged in')
res.render("home");
});
});
});
//Showing login form
app.get("/login", function (req, res) {
res.render('login', {
title: 'Login',
email: '',
password: ''
})
});
//Handling user login
app.post("/login", passport.authenticate("local", {
successRedirect: "/home",
failureRedirect: "/login"
}), function (req, res) {
});
//Handling user logout
app.get("/logout", function (req, res) {
req.logout();
res.redirect("/");
});
function isLoggedIn(req, res, next) {
if (req.isAuthenticated()) return next();
res.redirect("/login");
}
var port = process.env.PORT || 3000;
app.listen(port, function () {
console.log("Server Has Started!");
}); |
Step 5: Create Login and Registration Views
Create login and registration views; so visit the views directory and create the following views file into it:
- login.ejs
- register.ejs
- home.ejs
Now, open your login.ejs file and update the following code into your file:
Now, open your register.ejs file and update the following code into your file:
|
<!DOCTYPE html>
<html>
<head>
<title><%= title %></title>
<script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css">
</head>
<body>
<% if (messages.error) { %>
<p style="color:red"><%- messages.error %></p>
<% } %>
<% if (messages.success) { %>
<p style="color:green"><%- messages.success %></p>
<% } %>
<form action="/register" method="post" name="form1">
<div class="form-group">
<label for="exampleInputEmail1">Name</label>
<input type="name" name="name" class="form-control" id="name" aria-describedby="nameHelp" placeholder="Enter name" value="">
</div>
<div class="form-group">
<label for="exampleInputEmail1">Email</label>
<input type="email" name="email" class="form-control" id="email" aria-describedby="emailHelp" placeholder="Enter email" value="">
</div>
<div class="form-group">
<label for="exampleInputEmail1">Password</label>
<input type="password" name="password" class="form-control" id="password" aria-describedby="emailHelp" placeholder="*********" value="">
</div>
<input type="submit" class="btn btn-primary" value="Add">
<a href="auth/login" class="btn btn-success ml-2">Login</a>
</form>
</body>
</html> |
This login.ejs file contains login form.
Recommended:-Node js Delete Data by id into MongoDB Tutorial
Next, open your home.ejs file and update the following code into your file:
Step 6: Run Development Server
You can use the following command to run development server:
//run the below command
npm start
after run this command open your browser and hit
http://127.0.0.1:3000/
Conclusion
Node js + MongoDB user login and registration form example. In this tutorial, you have learn how to create user registration and login authentication application using node js + express js + MongoDB database.
To know more about Node JS, It's recommended to join Node JS Certification today.
