Ruby RSpec:nil:NilClass的未定义方法“name”

我在遵循railstutorial.org上的教程时遇到此错误

模型类：$APPLICATION\u 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

这里是factories.rb，我把它放在$APPLICATION\u HOME/spec/factories.rb中

FactoryGirl.define do
  factory :user do
    name     "amit"
    email    "amit@gmail.com"
    password "foobar"
  end
end

文件的快照

group :test do
  gem 'capybara', '1.1.2'
  gem 'factory_girl_rails'
end

这是我在测试规范时得到的日志

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

请帮助我解决这些错误

---

谢谢，Amit Patel

这是$APPLICATION\u HOME/app/controllers/users\u controller.rb中的打字错误

  def show
    @users = User.find(params[:id])
  end

如果您注意到，实例变量名是复数@users，我在erb模板中使用了单数name@user。这就是它失败的原因

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

it { should have_selector('h1',    text: user.name) }
it { should have_selector('title', text: user.name) }

  def show
    @users = User.find(params[:id])
  end