RSpec : undefined method `name' for nil:NilClass - ruby

Question

I am getting this error while following the tutorial from railstutorial.org.
Model class : $APPLICATION_HOME/app/models/user.rb
# == Schema Information
#
# Table name: users
#
# id :integer not null, primary key
# name :string(255)
# email :string(255)
# created_at :datetime not null
# updated_at :datetime not null
#
class User < ActiveRecord::Base
attr_accessible :name, :email, :password, :password_confirmation
has_secure_password
#validations
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 }
end
View page : $APPLICATION_HOME/app/views/show.html.erb file
<% provide :title, #user.name %>
<h1><%= #user.name %></h1>
RSpec file : $APPLICATION_HOME/app/spec/requests/user_pages_spec.rb
require 'spec_helper'
describe "UserPages" do
subject { page }
describe "signup page" do
before { visit signup_path }
it { should have_selector('h1', text: "Sign up") }
it { should have_selector('title', text: full_title('Sign up')) }
end
describe "profile page" do
let(:user) { FactoryGirl.create(:user) }
before { visit user_path(user) }
it { should have_selector('h1', text: user.name) }
it { should have_selector('title', text: user.name) }
end
end
Here is factories.rb which I have put in $APPLICATION_HOME/spec/factories.rb
FactoryGirl.define do
factory :user do
name "amit"
email "amit#gmail.com"
password "foobar"
end
end
A snapshot of Gemfile
group :test do
gem 'capybara', '1.1.2'
gem 'factory_girl_rails'
end
Here is log I am getting while testing the spec.
Failures:
1) UserPages profile page
Failure/Error: before { visit user_path(user) }
ActionView::Template::Error:
undefined method `name' for nil:NilClass
# ./app/views/users/show.html.erb:1:in `_app_views_users_show_html_erb__369651065_78543920'
# ./spec/requests/user_pages_spec.rb:18:in `block (3 levels) in <top (required)>'
2) UserPages profile page
Failure/Error: before { visit user_path(user) }
ActionView::Template::Error:
undefined method `name' for nil:NilClass
# ./app/views/users/show.html.erb:1:in `_app_views_users_show_html_erb__369651065_78543920'
# ./spec/requests/user_pages_spec.rb:18:in `block (3 levels) in <top (required)>'
Finished in 0.68212 seconds
12 examples, 2 failures
The error comes at these two lines
it { should have_selector('h1', text: user.name) }
it { should have_selector('title', text: user.name) }
Please help me to resolve these errors.
Thanks, Amit Patel

Answer 1

It was typo in $APPLICATION_HOME/app/controllers/users_controller.rb
def show
#users = User.find(params[:id])
end
If you notice, the instance variable name is pluralized (#users) and I have used singular name (#user) in the erb template. That is why it is getting failed.