nodejs

// app/routes.js
module.exports = function(app, passport) {

    // =====================================
    // HOME PAGE (with login links) ========
    // =====================================
    app.get('/', function(req, res) {
        res.render('index.ejs'); // load the index.ejs file
    });

    // =====================================
    // LOGIN ===============================
    // =====================================
    // show the login form
    app.get('/login', function(req, res) {

        // render the page and pass in any flash data if it exists
        res.render('login.ejs', { message: req.flash('loginMessage') });
    });

    // process the login form
    app.post('/login', passport.authenticate('local-login', {
        successRedirect : '/profile', // redirect to the secure profile section
        failureRedirect : '/login', // redirect back to the signup page if there is an error
        failureFlash : true // allow flash messages
    }));

    // =====================================
    // SIGNUP ==============================
    // =====================================
    // show the signup form
    app.get('/signup', function(req, res) {

        // render the page and pass in any flash data if it exists
        res.render('signup.ejs', { message: req.flash('signupMessage') });
    });

    // process the signup form
    app.post('/signup', passport.authenticate('local-signup', {
        successRedirect : '/profile', // redirect to the secure profile section
        failureRedirect : '/signup', // redirect back to the signup page if there is an error
        failureFlash : true // allow flash messages
    }));

    // =====================================
    // PROFILE SECTION =====================
    // =====================================
    // we will want this protected so you have to be logged in to visit
    // we will use route middleware to verify this (the isLoggedIn function)
    app.get('/profile', isLoggedIn, function(req, res) {
        res.render('profile.ejs', {
            user : req.user // get the user out of session and pass to template
        });
    });

    // =====================================
    // LOGOUT ==============================
    // =====================================
    app.get('/logout', function(req, res) {
        req.logout();
        res.redirect('/');
    });
};

// route middleware to make sure a user is logged in
function isLoggedIn(req, res, next) {

    // if user is authenticated in the session, carry on
    if (req.isAuthenticated())
        return next();

    // if they aren't redirect them to the home page
    res.redirect('/');
}


==============


// app/routes.js
module.exports = function(app, passport) {

    // =====================================
    // HOME PAGE (with login links) ========
    // =====================================
    app.get('/', function(req, res) {
        res.render('index.ejs'); // load the index.ejs file
    });

    // =====================================
    // LOGIN ===============================
    // =====================================
    // show the login form
    app.get('/login', function(req, res) {

        // render the page and pass in any flash data if it exists
        res.render('login.ejs', { message: req.flash('loginMessage') });
    });

    // process the login form
    app.post('/login', passport.authenticate('local-login', {
        successRedirect : '/profile', // redirect to the secure profile section
        failureRedirect : '/login', // redirect back to the signup page if there is an error
        failureFlash : true // allow flash messages
    }));

    // =====================================
    // SIGNUP ==============================
    // =====================================
    // show the signup form
    app.get('/signup', function(req, res) {

        // render the page and pass in any flash data if it exists
        res.render('signup.ejs', { message: req.flash('signupMessage') });
    });

    // process the signup form
    app.post('/signup', passport.authenticate('local-signup', {
        successRedirect : '/profile', // redirect to the secure profile section
        failureRedirect : '/signup', // redirect back to the signup page if there is an error
        failureFlash : true // allow flash messages
    }));

    // =====================================
    // PROFILE SECTION =====================
    // =====================================
    // we will want this protected so you have to be logged in to visit
    // we will use route middleware to verify this (the isLoggedIn function)
    app.get('/profile', isLoggedIn, function(req, res) {
        res.render('profile.ejs', {
            user : req.user // get the user out of session and pass to template
        });
    });

    // =====================================
    // LOGOUT ==============================
    // =====================================
    app.get('/logout', function(req, res) {
        req.logout();
        res.redirect('/');
    });
};

// route middleware to make sure a user is logged in
function isLoggedIn(req, res, next) {

    // if user is authenticated in the session, carry on
    if (req.isAuthenticated())
        return next();

    // if they aren't redirect them to the home page
    res.redirect('/');
}

======================================

// config/passport.js

// load all the things we need
var LocalStrategy   = require('passport-local').Strategy;

// load up the user model
var User            = require('../app/models/user');

// expose this function to our app using module.exports
module.exports = function(passport) {

    // =========================================================================
    // passport session setup ==================================================
    // =========================================================================
    // required for persistent login sessions
    // passport needs ability to serialize and unserialize users out of session

    // used to serialize the user for the session
    passport.serializeUser(function(user, done) {
        done(null, user.id);
    });

    // used to deserialize the user
    passport.deserializeUser(function(id, done) {
        User.findById(id, function(err, user) {
            done(err, user);
        });
    });

    // =========================================================================
    // LOCAL SIGNUP ============================================================
    // =========================================================================
    // we are using named strategies since we have one for login and one for signup
    // by default, if there was no name, it would just be called 'local'

    passport.use('local-signup', new LocalStrategy({
        // by default, local strategy uses username and password, we will override with email
        usernameField : 'email',
        passwordField : 'password',
        passReqToCallback : true // allows us to pass back the entire request to the callback
    },
    function(req, email, password, done) {

        // asynchronous
        // User.findOne wont fire unless data is sent back
        process.nextTick(function() {

        // find a user whose email is the same as the forms email
        // we are checking to see if the user trying to login already exists
        User.findOne({ 'local.email' :  email }, function(err, user) {
            // if there are any errors, return the error
            if (err)
                return done(err);

            // check to see if theres already a user with that email
            if (user) {
                return done(null, false, req.flash('signupMessage', 'That email is already taken.'));
            } else {

                // if there is no user with that email
                // create the user
                var newUser            = new User();

                // set the user's local credentials
                newUser.local.email    = email;
                newUser.local.password = newUser.generateHash(password);

                // save the user
                newUser.save(function(err) {
                    if (err)
                        throw err;
                    return done(null, newUser);
                });
            }

        });

        });

    }));

     // =========================================================================
    // LOCAL LOGIN =============================================================
    // =========================================================================
    // we are using named strategies since we have one for login and one for signup
    // by default, if there was no name, it would just be called 'local'

    passport.use('local-login', new LocalStrategy({
        // by default, local strategy uses username and password, we will override with email
        usernameField : 'email',
        passwordField : 'password',
        passReqToCallback : true // allows us to pass back the entire request to the callback
    },
    function(req, email, password, done) { // callback with email and password from our form

        // find a user whose email is the same as the forms email
        // we are checking to see if the user trying to login already exists
        User.findOne({ 'local.email' :  email }, function(err, user) {
            // if there are any errors, return the error before anything else
            if (err)
                return done(err);

            // if no user is found, return the message
            if (!user)
                return done(null, false, req.flash('loginMessage', 'No user found.')); // req.flash is the way to set flashdata using connect-flash

            // if the user is found but the password is wrong
            if (!user.validPassword(password))
                return done(null, false, req.flash('loginMessage', 'Oops! Wrong password.')); // create the loginMessage and save it to session as flashdata

            // all is well, return successful user
            return done(null, user);
        });

    }));
};