chapter 8 Mark Hartl tutorial undefined 'remember_token' error - ruby-on-rails

Question

I've been having trouble trying to get my test to pass. I can't find what the issue is any help would be greatly appreciated!
Here is the failure message.
1) Authentication signin with valid information
Failure/Error: click_button "Sign in"
NoMethodError:
undefined method `remember_token' for #<Class:0x007fe30d0a93b0>
# ./app/helpers/sessions_helper.rb:4:in `sign_in'
# ./app/controllers/sessions_controller.rb:9:in `create'
# (eval):2:in `click_button'
# ./spec/requests/authentication_pages_spec.rb:34:in `block (4 levels) in <top (required)>'
2) Authentication signin with valid information
Failure/Error: click_button "Sign in"
NoMethodError:
undefined method `remember_token' for #<Class:0x007fe30d0a93b0>
# ./app/helpers/sessions_helper.rb:4:in `sign_in'
# ./app/controllers/sessions_controller.rb:9:in `create'
# (eval):2:in `click_button'
# ./spec/requests/authentication_pages_spec.rb:34:in `block (4 levels) in <top (required)>'
3) Authentication signin with valid information
Failure/Error: click_button "Sign in"
NoMethodError:
undefined method `remember_token' for #<Class:0x007fe30d0a93b0>
# ./app/helpers/sessions_helper.rb:4:in `sign_in'
# ./app/controllers/sessions_controller.rb:9:in `create'
# (eval):2:in `click_button'
# ./spec/requests/authentication_pages_spec.rb:34:in `block (4 levels) in <top (required)>'
4) Authentication signin with valid information
Failure/Error: click_button "Sign in"
NoMethodError:
undefined method `remember_token' for #<Class:0x007fe30d0a93b0>
# ./app/helpers/sessions_helper.rb:4:in `sign_in'
# ./app/controllers/sessions_controller.rb:9:in `create'
# (eval):2:in `click_button'
# ./spec/requests/authentication_pages_spec.rb:34:in `block (4 levels) in <top (required)>'
Heres the authentication pages spec rb:
require 'spec_helper'
describe "Authentication" do
subject { page }
describe "signin page" do
before { visit signin_path }
it { should have_selector('h1', text: 'Sign in') }
it { should have_selector('title', text: 'Sign in') }
end
describe "signin" do
before { visit signin_path }
describe "with invalid information" do
before { click_button "Sign in" }
it { should have_selector('title', text: 'Sign in') }
it { should have_selector('div.alert.alert-error', text: 'Invalid') }
end
describe "after visiting another page" do
before { click_link "Home" }
it { should_not have_selector('div.alert.alert-error') }
end
describe "with valid information" do
let(:user) { FactoryGirl.create(:user) }
before do
fill_in "Email", with: user.email.upcase
fill_in "Password", with: user.password
click_button "Sign in"
end
it { should have_selector('title', text: user.name) }
it { should have_link('Profile', href: user_path(user)) }
it { should have_link('Sign out', href: signout_path) }
it { should_not have_link('Sign in', href: signin_path) }
end
end
end
Here is the session helper
module SessionsHelper
def sign_in(user)
cookies.permanent[:remember_token] = user.remember_token
self.current_user = user
end
def signed_in?
!current_user.nil?
end
def current_user=(user)
#current_user = user
end
def current_user
#current_user ||= User.find_by_remember_token(cookies[:remember_token])
end
end
Here is the user rb file
class User < ActiveRecord::Base
attr_accessible :name, :email, :password, :password_confirmation
has_secure_password
before_save { |user| user.email = email.downcase }
before_save :create_remember_token
validates :name, presence: true, length: {maximum: 50}
VALID_EMAIL_REGEX = /\A[\w+\-.]+#[a-z\d\-.]+\.[a-z]+\z/i
validates :email, presence: true, format: { with: VALID_EMAIL_REGEX },
uniqueness: { case_sensitive: false }
validates :password, length: {minimum: 6}
validates :password_confirmation, presence:true
private
def create_remember_token
self.remember_token = SecureRandom.urlsafe_base64
end
end
Here is the sessions controller
class SessionsController < ApplicationController
def new
end
def create
user = User.find_by_email(params[:session][:email].downcase)
if user && user.authenticate(params[:session][:password])
sign_in User
redirect_to user
else
flash.now[:error] = 'Invalid email/password combination' # Not quite right!
render 'new'
end
end
def destroy
end
end
These are the files I think the issues are with let me know if you need to see any other files. Any thoughts would be greatly appreciated! thanks!

Answer 1

[Updated per comment thread from original answer].
The error message shows a Class as missing the method, which means that a Class rather than an instance of User was passed as the argument to sign_in. Checking the calling code in sessions_controller.rb, you can see that User was passed instead of user.
In general, I found that tutorial to be "spot on". If you follow the text carefully, you won't go wrong.