express-back

express-back

The http referer header is unreliable, express-back uses sessions to track the two previous paths a client has visited. Also provides a convienence method res.back() to safely redirect to the previous path or fallback as to prevent a redirect loop.

$3

``js

var back = require('express-back');

app.use(session({
secret: 'super secret'
}));
app.use(back());

app.get('/protected', function(req, res) {
if (!req.isAuthenticated()) {
return res.back();
}
});
`

$3


`js
var back = require('express-back');
`
This middleware depends upon a session middleware or req.session, and will populate req.prevPath and req.prevPrevPath`.

#### back(options)
* options {Object}
* options.default {String} The fallback path to populate req.prevPath and req.prevPrevPath, defaults to '/'