Sessions and cookies play a very important role in a web app. These are used to store information. Cookies are used to store information in the client-side system/browser. Sessions are stores both in client and server systems.
Node Packages Required for Sessions an Cookies
> passport
> passport-local
> passport-local-mongoose
> express-session
Installing these packages:
npm i passport passport-local passport-local-mongoose express-session
Full Code:
//jshint esversion:6
const express = require("express");
const bodyParser = require("body-parser");
const ejs = require("ejs");
const mongoose = require('mongoose');
const session = require('express-session');
const passport = require('passport');
const passportLocalMongoose = require('passport-local-mongoose');
const app = express();
app.set('view engine', 'ejs');
app.use(bodyParser.urlencoded({
extended: true
}));
app.use(express.static("public"));
app.use(session({
secret: "Our little secret",
resave: false,
saveUninitialized: false
}));
app.use(passport.initialize());
app.use(passport.session());
const uri = "mongodb://localhost:27017/usersDB"
mongoose.connect(uri, {useNewUrlParser: true, useUnifiedTopology: true});
mongoose.set('useCreateIndex', true);
const userSchema = new mongoose.Schema({
email: String,
password: String
});
userSchema.plugin(passportLocalMongoose)
const User = new mongoose.model("User", userSchema);
passport.use(User.createStrategy());
passport.serializeUser(User.serializeUser());
passport.deserializeUser(User.deserializeUser());
app.get('/', function(req, res){
res.render('home');
});
app.get('/login', function(req, res){
res.render('login');
});
app.get('/register', function(req, res){
res.render('register');
});
app.get("/secrets", function(req,res){
if(req.isAuthenticated()){
res.render("secrets");
}else{
res.redirect("/login");
}
});
app.get("/logout", function(req,res){
req.logout();
res.redirect("/");
});
app.post("/register", function(req,res){
User.register({username: req.body.username}, req.body.password, function(err, user){
if(err){
console.log(err);
res.redirect("/register");
}else{
passport.authenticate("local")(req,res, function(){
res.redirect("/secrets");
});
}
});
});
app.post("/login", function(req,res){
const user = new User({
username: req.body.username,
password: req.body.password
});
req.login(user, function(err){
if(err){
console.log(err);
}else{
passport.authenticate("local")(req,res, function(){
res.redirect("/secrets");
});
}
});
});
app.listen(3000, function() {
console.log("Server started on port 3000");
});
