Will not go to the profile page.

var express = require('express');
var router = express.Router();
var User = require('../models/user');
// GET /profile
router.get('/profile', function(req, res, next) {
  if (!req.session.userId) {
    var err = new Error('You are not authorized to view this page.');
    err.status = 403;
    return next(err);
  }
  User.findById(req.session.userId).exec(function(error, user) {
    if (error) {
      return next(error);
    } else {
      return res.render('profile', {
        title: 'Profile',
        name: user.name,
        favorite: user.favoriteBook
      });
    }
  });
});
//GET /login route
router.get('/login', function(req, res, next) {
  return res.render('login', { title: 'Login In' });
});

//POST login
router.post('/login', function(req, res, next) {
  if (req.body.email && req.body.password) {
  } else {
    var err = new Error('Email and password are required.');
    err.status = 401;
    return next(err);
  }
});

// GET /register
router.get('/register', function(req, res, next) {
  return res.render('register', { title: 'Sign Up' });
});

// POST /register
router.post('/register', function(req, res, next) {
  if (
    req.body.email &&
    req.body.name &&
    req.body.favoriteBook &&
    req.body.password &&
    req.body.confirmPassword
  ) {
    // confirm that user typed same password twice

    if (req.body.password !== req.body.confirmPassword) {
      var err = new Error('Passwords do not match.');
      err.status = 400;
      return next(err);
    }

    // create object with form input
    /*
    You'll notice that the value is coming from the request object.
    So it's the information that the user filled out in the form.
    */
    var userData = {
      email: req.body.email,
      name: req.body.name,
      favoriteBook: req.body.favoriteBook,
      password: req.body.password
    };

    // use schema's `create` method to insert document into Mongo
    User.create(userData, function(error, user) {
      if (error) {
        return next(error);
      } else {
        return res.redirect('/profile');
      }
    });
  } else {
    var err = new Error('All fields required.');
    err.status = 400;
    return next(err);
  }
});

// GET /
router.get('/', function(req, res, next) {
  return res.render('index', { title: 'Home' });
});

// GET /about
router.get('/about', function(req, res, next) {
  return res.render('about', { title: 'About' });
});

// GET /contact
router.get('/contact', function(req, res, next) {
  return res.render('contact', { title: 'Contact' });
});

module.exports = router;

extends layout

block content
  .main.container.clearfix
    .row
      .col-md-8.col-md-offset-2
        h1.display-4
          img.avatar.img-circle.hidden-xs-down(src='/images/avatar.png', alt='avatar')
          | #{name}
        h2.favorite-book Favorite Book
        | #{favorite}