javascript - PassportJS in Node removing session on logout

Javascript - PassportJS in Node removing session on logout

To use Passport.js in Node.js and remove the session on logout, you typically clear the session or destroy it upon logging out. This involves clearing the user session data stored in the session store. Here's a basic example using Express.js and Passport.js:

const express = require('express');
const session = require('express-session');
const passport = require('passport');
const LocalStrategy = require('passport-local').Strategy;

const app = express();

// Configure passport
passport.use(new LocalStrategy(
  function(username, password, done) {
    // Your authentication logic here
  }
));

passport.serializeUser(function(user, done) {
  done(null, user.id);
});

passport.deserializeUser(function(id, done) {
  // Fetch user by id from database
  // Example: User.findById(id, function(err, user) { done(err, user); });
});

// Express session middleware
app.use(session({
  secret: 'your_secret_key',
  resave: false,
  saveUninitialized: false
}));

// Initialize passport and session middleware
app.use(passport.initialize());
app.use(passport.session());

// Routes
app.post('/login', passport.authenticate('local', {
  successRedirect: '/',
  failureRedirect: '/login'
}));

app.get('/logout', function(req, res){
  // Clear or destroy the session upon logout
  req.logout();
  req.session.destroy(function (err) {
    res.redirect('/login'); // Redirect to login page after logout
  });
});

// Your other routes and middleware...

// Start the server
app.listen(3000, () => {
  console.log('Server is running on port 3000');
});

In this example:

  • When the user logs out (/logout route), req.logout() is called to remove the user property from req.
  • req.session.destroy() is then called to destroy the session, removing all session data.
  • Finally, the user is redirected to the login page (/login).

Ensure you have appropriate error handling and database integration for user authentication in your application.

Examples

  1. How to remove session on logout using Passport.js in Node.js?

    Description: Implement a logout route that destroys the session using Passport.js in Node.js.

    // Logout route
app.get('/logout', function(req, res){
    req.logout();
    res.redirect('/');
});

  2. How to clear session cookies on logout using Passport.js in Node.js?

    Description: Clear session cookies upon logout to remove user authentication using Passport.js in Node.js.

    // Logout route
app.get('/logout', function(req, res){
    req.session.destroy();
    res.clearCookie('session');
    res.redirect('/');
});

  3. How to remove user session data on logout using Passport.js in Express?

    Description: Remove user session data upon logout using Passport.js and Express.

    // Logout route
app.get('/logout', function(req, res){
    req.session = null;
    req.logout();
    res.redirect('/');
});

  4. How to invalidate session on logout using Passport.js in Node.js?

    Description: Invalidate the session upon logout to ensure user data is removed using Passport.js in Node.js.

    // Logout route
app.get('/logout', function(req, res){
    req.session.destroy(function (err) {
        req.logout();
        res.redirect('/');
    });
});

  5. How to clear session data and destroy session on logout using Passport.js in Node.js?

    Description: Clear session data and destroy the session completely upon logout using Passport.js in Node.js.

    // Logout route
app.get('/logout', function(req, res){
    req.session.destroy();
    req.logout();
    res.redirect('/');
});

  6. How to remove user session on logout using Passport.js in a Node.js application?

    Description: Remove user session upon logout using Passport.js in a Node.js application for security purposes.

    // Logout route
app.get('/logout', function(req, res){
    req.session.destroy();
    req.logout();
    res.redirect('/');
});

  7. How to handle session removal on logout using Passport.js in Node.js?

    Description: Handle session removal upon logout using Passport.js in a Node.js application to ensure user data security.

    // Logout route
app.get('/logout', function(req, res){
    req.session.destroy();
    req.logout();
    res.redirect('/');
});

  8. How to clear user session cookies on logout using Passport.js in Node.js?

    Description: Clear user session cookies upon logout using Passport.js in a Node.js application for improved security.

    // Logout route
app.get('/logout', function(req, res){
    req.session.destroy();
    res.clearCookie('session');
    req.logout();
    res.redirect('/');
});

  9. How to destroy user session on logout using Passport.js in Express?

    Description: Destroy user session upon logout using Passport.js in an Express application to ensure complete user logout.

    // Logout route
app.get('/logout', function(req, res){
    req.session.destroy();
    req.logout();
    res.redirect('/');
});

  10. How to remove user session cookies and clear session on logout using Passport.js in Node.js?

    Description: Remove user session cookies and clear session data upon logout using Passport.js in a Node.js application.

    // Logout route
app.get('/logout', function(req, res){
    req.session.destroy();
    res.clearCookie('session');
    req.logout();
    res.redirect('/');
});

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