Login and Registration System Using Node MongoDB Example

Hello Friends,

Follow the simple steps to learn how to login form using node.js and MongoDB.The login form allows users to login into the webpage after they have created their account.

Node js + MongoDB user login and registration form example. In this tutorial, you will learn how to create a user registration and log-in authentication application using node js + express js + MongoDB database.

Step 1: Install Node JS Express App and Modules

Execute the following command on the terminal to create a 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 into 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 a new file name database.js. Then add the following code to connect the 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 the 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:

Now, open your login.ejs file and update the following code into your file:

<!DOCTYPE html>
<html>
    <head>
        <title>Login and Registration System Using Node MongoDB Example - Nicesnippets.com</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="/login" method="post" name="form1">
            <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/register" class="btn btn-success ml-2">Register Here</a>
        </form>
    </body>
</html>

Now, open your register.ejs file and update the following code into your file:

<!DOCTYPE html>
<html>
    <head>
        <title>Login and Registration System Using Node MongoDB Example - Nicesnippets.com</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 the login form.

Next, open your home.ejs file and update the following code into your file:

<!DOCTYPE html>
<html>
    <head>
        <title>Login and Registration System Using Node MongoDB Example - Nicesnippets.com</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>
        <div class="container">
            <% if (messages.error) { %>
            <p style="color:red"><%- messages.error %></p>
            <% } %>
            <% if (messages.success) { %>
            <p style="color:green"><%- messages.success %></p>
            <% } %>
            <div class="card">
                <div class="card-header">
                    Dashboard <b><%= name %></b>
                </div>
                <div class="card-body">
                    <h5 class="card-title">Welcome</h5>
                    <p class="card-text">You have successfully login</p>
                    <a href="logout" class="btn btn-primary">Logout</a>
                </div>
            </div>
        </div>
    </body>
</html>

Step 6: Run Development Server

You can use the following command to run the development server:

//run the below command
npm start
after run this command open your browser and hit 
http://127.0.0.1:3000/

I hope it can help you...