Custom returnUrl on Node.js Passport's Google strategy

Question

I\'m using Express and Passport OpenID Google strategy and I would like to set returnURL on each auth request to be able to return to the page that initiated that auth.

Answer 1

Wherever you have your login button, append the request's current URL as a query parameter (adjust for whatever templating system you use):

Log In

Then, add middleware to your GET /auth/google handler that stores this value in req.session:

app.get('/auth/google', function(req, res, next) {
  req.session.redirect = req.query.redirect;
  next();
}, passport.authenticate('google'));

Finally, in your callback handler, redirect to the URL stored in the session:

app.get('/auth/google/callback', passport.authenticate('google',
  failureRedirect: '/'
), function (req, res) {
  res.redirect(req.session.redirect || '/');
  delete req.session.redirect;
});