Dynamic failureRedirect with passport.js

问题

This is my login function atm:

app.post("/login", passport.authenticate("local", {
    failureRedirect: "/login?error=1"
}), function (req, res) {
    res.redirect(req.body.url || "/");
});

I need to put the req.body.url inside the failureRedirect url, so it should looks like:

app.post("/login", passport.authenticate("local", {
    failureRedirect: "/login?error=1&url=" + (req.body.url || "/")
}), function (req, res) {
    res.redirect(req.body.url || "/");
});

It can't work because the req variable is inited only inside the callback of post... how can I do?

回答1:

You can use Custom Callbacks to dynamically generate callbacks urls, as the req object is available inside them.

来源：https://stackoverflow.com/questions/25808827/dynamic-failureredirect-with-passport-js