How to know if user is logged in with passport.js?

Question

I\'ve been reading passport.js info and samples for two days, but I\'m not sure after that I did all the process of authenticating.

How do I know if I\

Answer 1

It is not explicitly documented but there is a isAuthenticated() method which is inserted into req by passport.
Can be used as follows,

req.isAuthenticated() // returns true if auth, false if not

---

// auth.js
module.exports = {
  ensureAuthenticated: (req, res, next) => {
    if (req.isAuthenticated()) {
      return next()
    }
    res.redirect('/login') // if not auth
  },

  forwardAuthenticated: (req, res, next) => {
    if (!req.isAuthenticated()) {
      return next()
    }
    res.redirect('/dashboard');  // if auth    
  }
}

---

// app.js
app.get('/dashboard', ensureAuthenticated, (req, res) => res.render('dashboard'))
app.get('/login', forwardAuthenticated, (req, res) => res.render('login'))
app.get('/register', forwardAuthenticated, (req, res) => res.render('register'))