Nodejs - Passport - Failed to serialize user into session - node.js

Question

I am using the following library:
passport-oauth2-password-grant
What I'm trying to do is the following:
Authenticate to the API (username / password)
Get the Access token
Get the user profile from the API
Log the user in using passport
I'm using the following implementation:
PasswordGrantStrategy.prototype.userProfile = function(accessToken, done) {
return done(null, { real_name: 'Foo Baz', email: 'test#test.com' });
}
passport.use(new PasswordGrantStrategy({
tokenURL: 'http://api.local/oauth/token',
clientID: "2",
clientSecret: "",
grantType: "password",
},
function(accessToken, refreshToken, profile, done) {
return done(null, profile);
}));
function authenticate() {
return function(req, res, next) {
var username = "email#email.com";
var password = "password";
passport.authenticate('password-grant', {
username: username,
password: password
})(req, res, next);
};
}
Login to the API using username/password
It's passing the profile into the callback function for the passport.use(new PasswordGrantStrategy however, I am getting the following error:
Failed to serialize user into session
It should be serializing as I'm passing in a profile and all looks fine. Now does this mean there could be a possible issue with sessions?

Answer 1

You need to provide serializeUser and deserializeUser method to Passport in order for it to work.
From the official docs:
passport.serializeUser(function(user, done) {
done(null, user.id);
});
passport.deserializeUser(function(id, done) {
User.findById(id, function(err, user) {
done(err, user);
});
});