Redirecting to previous page after authentication in node.js using passport.js
Problem
I'm trying to establish a Login mechanism using node.js, express and passport.js. The Login itself works quite nice, also sessions are stored nicely with redis but I do have some troubles with redirecting the user to where he started from before being prompted to authenticate.
e.g. User follows link http://localhost:3000/hidden
is then redirected to http://localhost:3000/login
but then I want him to be redirected again back to http://localhost:3000/hidden
.
The purpose of this is, if the user access randomly a page he needs to be logged in first, he shall be redirected to the /login site providing his credentials and then being redirected back to the site he previously tried to access.
Here is my login post
app.post('/login', function (req, res, next) {
passport.authenticate('local', function (err, user, info) {
if (err) {
return next(err)
} else if (!user) {
console.log('message: ' + info.message);
return res.redirect('/login')
} else {
req.logIn(user, function (err) {
if (err) {
return next(err);
}
return next(); //
and here my ensureAuthenticated Method
function ensureAuthenticated (req, res, next) {
if (req.isAuthenticated()) {
return next();
}
res.redirect('/login');
}
which hooks into the /hidden
page
app.get('/hidden', ensureAuthenticated, function(req, res){
res.render('hidden', { title: 'hidden page' });
});
The html output for the login site is quite simple
Solution
I don't know about passport, but here's how I do it:
I have a middleware I use with app.get('/account', auth.restrict, routes.account)
that sets redirectTo
in the session...then I redirect to /login
auth.restrict = function(req, res, next){
if (!req.session.userid) {
req.session.redirectTo = '/account';
res.redirect('/login');
} else {
next();
}
};
Then in routes.login.post
I do the following:
var redirectTo = req.session.redirectTo ? req.session.redirectTo : '/';
delete req.session.redirectTo;
// is authenticated ?
res.redirect(redirectTo);
Discussion
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