Ruby on rails 9.1.3之前的Hartl章节错误

我正在阅读Hartl先生的教程，并试图准确地复制它，甚至有点使用他完整的github代码作为指导，但在运行“bundle exec rspec spec/”之后，我仍然坚持以下几点：

失败：

  1) Authentication signin with valid information 
     Failure/Error: before { sign_in user }
     ActionView::MissingTemplate:
       Missing template sessions/create, application/create with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in:
         * "/home/nemo/rails_projects/sample_app/app/views"
     # ./spec/support/utilities.rb:19:in `sign_in'
     # ./spec/requests/authentication_pages_spec.rb:32:in `block (4 levels) in <top (required)>'

  2) Authentication signin with valid information 
     Failure/Error: before { sign_in user }
     ActionView::MissingTemplate:
       Missing template sessions/create, application/create with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in:
         * "/home/nemo/rails_projects/sample_app/app/views"
     # ./spec/support/utilities.rb:19:in `sign_in'
     # ./spec/requests/authentication_pages_spec.rb:32:in `block (4 levels) in <top (required)>'

  3) Authentication signin with valid information 
     Failure/Error: before { sign_in user }
     ActionView::MissingTemplate:
       Missing template sessions/create, application/create with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in:
         * "/home/nemo/rails_projects/sample_app/app/views"
     # ./spec/support/utilities.rb:19:in `sign_in'
     # ./spec/requests/authentication_pages_spec.rb:32:in `block (4 levels) in <top (required)>'

  4) Authentication signin with valid information 
     Failure/Error: before { sign_in user }
     ActionView::MissingTemplate:
       Missing template sessions/create, application/create with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in:
         * "/home/nemo/rails_projects/sample_app/app/views"
     # ./spec/support/utilities.rb:19:in `sign_in'
     # ./spec/requests/authentication_pages_spec.rb:32:in `block (4 levels) in <top (required)>'

  5) Authentication signin with valid information 
     Failure/Error: before { sign_in user }
     ActionView::MissingTemplate:
       Missing template sessions/create, application/create with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in:
         * "/home/nemo/rails_projects/sample_app/app/views"
     # ./spec/support/utilities.rb:19:in `sign_in'
     # ./spec/requests/authentication_pages_spec.rb:32:in `block (4 levels) in <top (required)>'

  6) Authentication signin with valid information followed by signout 
     Failure/Error: before { sign_in user }
     ActionView::MissingTemplate:
       Missing template sessions/create, application/create with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in:
         * "/home/nemo/rails_projects/sample_app/app/views"
     # ./spec/support/utilities.rb:19:in `sign_in'
     # ./spec/requests/authentication_pages_spec.rb:32:in `block (4 levels) in <top (required)>'

  7) User pages profile page signup with valid information after saving the user 
     Failure/Error: before { visit user_path(user) }
     AbstractController::ActionNotFound:
       The action 'index' could not be found for UsersController
     # ./spec/requests/user_pages_spec.rb:16:in `block (3 levels) in <top (required)>'

  8) User pages profile page signup with valid information after saving the user 
     Failure/Error: before { visit user_path(user) }
     AbstractController::ActionNotFound:
       The action 'index' could not be found for UsersController
     # ./spec/requests/user_pages_spec.rb:16:in `block (3 levels) in <top (required)>'

  9) User pages profile page signup with valid information after saving the user 
     Failure/Error: before { visit user_path(user) }
     AbstractController::ActionNotFound:
       The action 'index' could not be found for UsersController
     # ./spec/requests/user_pages_spec.rb:16:in `block (3 levels) in <top (required)>'

  10) User pages profile page with invalid information 
     Failure/Error: before { click_button "Save changes" }
     Capybara::ElementNotFound:
       Unable to find button "Save changes"
     # ./spec/requests/user_pages_spec.rb:76:in `block (4 levels) in <top (required)>'

  11) User pages profile page page 
     Failure/Error: it { should have_content("Update your profile") }
       expected #has_content?("Update your profile") to return true, got false
     # ./spec/requests/user_pages_spec.rb:70:in `block (4 levels) in <top (required)>'

  12) User pages profile page page 
     Failure/Error: it { should have_title("Edit user") }
       expected #has_title?("Edit user") to return true, got false
     # ./spec/requests/user_pages_spec.rb:71:in `block (4 levels) in <top (required)>'

  13) User pages profile page page 
     Failure/Error: it { should have_link('change', href: 'http://gravatar.com/emails') }
       expected #has_link?("change", {:href=>"http://gravatar.com/emails"}) to return true, got false
     # ./spec/requests/user_pages_spec.rb:72:in `block (4 levels) in <top (required)>'

Finished in 1.83 seconds
53 examples, 13 failures

规格/请求/用户\u页面\u规格.rb

require 'spec_helper'

describe "User pages" do

  subject { page }

  describe "signup page" do
    before { visit signup_path }

    it { should have_content('Sign up') }
    it { should have_title(full_title('Sign up')) }
  end

  describe "profile page" do
    let(:user) { FactoryGirl.create(:user) }
    before { visit user_path(user) }

    it { should have_content(user.name) }
    it { should have_title(user.name) }

  describe "signup" do

    before { visit signup_path }

    let(:submit) { "Create my account" }

    describe "with invalid information" do
      it "should not create a user" do
        expect { click_button submit }.not_to change(User, :count)
      end

      describe "after submission" do
        before { click_button submit }

        it { should have_title('Sign up') }
        it { should have_content('error') }
      end
    end

    describe "with valid information" do

      before do
        fill_in "Name", with: "Example User"
        fill_in "Email", with: "user@example.com"
        fill_in "Password", with: "foobar"
        fill_in "Confirmation", with: "foobar"
      end

      it "should create a user" do
        expect { click_button submit }.to change(User, :count).by(1)
      end

      describe "after saving the user" do
        before { click_button submit }
        let(:user) { User.find_by(email: 'user@example.com') }

        it { should have_link('Sign out') }
        it { should have_title(user.name) }
        it { should have_selector('div.alert.alert-success', text: 'Welcome') }
      end
    end
  end

    describe "edit" do
      let(:user) { FactoryGirl.create(:user) }
      before { visit edit_user_path(user) }
    end

    describe "page" do
      it { should have_content("Update your profile") }
      it { should have_title("Edit user") }
      it { should have_link('change', href: 'http://gravatar.com/emails') }
    end

    describe "with invalid information" do
      before { click_button "Save changes" }

      it { should have_content('error') }
    end
  end
end

app/controllers/users\u controller.rb

class UsersController < ApplicationController

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

  def new
   @user = User.new
  end

  def create
    @user = User.new(user_params)
    if @user.save
      sign_in @user
      flash[:success] = "Welcome to the Sample App!"
      redirect_to @user
    else
      render 'new'
    end
  end

  def edit
    @user = User.find(params[:id])
  end

  def update
    @user = User.find(params[:id])
    if @user.update_attributes(user_params)
      # Handle a successful update.
    else
      render 'edit'
    end
  end

  private

    def user_params
      params.require(:user).permit(:name, :email, :password,
                                   :password_confirmation)
    end
end

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 the user in and redirect to the user's show page.
    else
      flash.now[:error] = 'Invalid email/password combination'
      render 'new'
    end
  end

  def destroy
    sign_out
    redirect_to root_url
  end
end

添加了app/controllers/sessions\u controller.rb

class UsersController < ApplicationController

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

  def new
   @user = User.new
  end

  def create
    @user = User.new(user_params)
    if @user.save
      sign_in @user
      flash[:success] = "Welcome to the Sample App!"
      redirect_to @user
    else
      render 'new'
    end
  end

  def edit
    @user = User.find(params[:id])
  end

  def update
    @user = User.find(params[:id])
    if @user.update_attributes(user_params)
      # Handle a successful update.
    else
      render 'edit'
    end
  end

  private

    def user_params
      params.require(:user).permit(:name, :email, :password,
                                   :password_confirmation)
    end
end

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 the user in and redirect to the user's show page.
    else
      flash.now[:error] = 'Invalid email/password combination'
      render 'new'
    end
  end

  def destroy
    sign_out
    redirect_to root_url
  end
end

这次它只导致了7个错误

Failures:

  1) User pages profile page signup with valid information after saving the user 
     Failure/Error: before { visit user_path(user) }
     NoMethodError:
       undefined method `paginate' for #<Class:0xa6de278>
     # ./app/controllers/users_controller.rb:4:in `index'
     # ./spec/requests/user_pages_spec.rb:16:in `block (3 levels) in <top (required)>'

  2) User pages profile page signup with valid information after saving the user 
     Failure/Error: before { visit user_path(user) }
     NoMethodError:
       undefined method `paginate' for #<Class:0xa6de278>
     # ./app/controllers/users_controller.rb:4:in `index'
     # ./spec/requests/user_pages_spec.rb:16:in `block (3 levels) in <top (required)>'

  3) User pages profile page signup with valid information after saving the user 
     Failure/Error: before { visit user_path(user) }
     NoMethodError:
       undefined method `paginate' for #<Class:0xa6de278>
     # ./app/controllers/users_controller.rb:4:in `index'
     # ./spec/requests/user_pages_spec.rb:16:in `block (3 levels) in <top (required)>'

  4) User pages profile page with invalid information 
     Failure/Error: before { click_button "Save changes" }
     Capybara::ElementNotFound:
       Unable to find button "Save changes"
     # ./spec/requests/user_pages_spec.rb:76:in `block (4 levels) in <top (required)>'

  5) User pages profile page page 
     Failure/Error: it { should have_content("Update your profile") }
       expected #has_content?("Update your profile") to return true, got false
     # ./spec/requests/user_pages_spec.rb:70:in `block (4 levels) in <top (required)>'

  6) User pages profile page page 
     Failure/Error: it { should have_title("Edit user") }
       expected #has_title?("Edit user") to return true, got false
     # ./spec/requests/user_pages_spec.rb:71:in `block (4 levels) in <top (required)>'

  7) User pages profile page page 
     Failure/Error: it { should have_link('change', href: 'http://gravatar.com/emails') }
       expected #has_link?("change", {:href=>"http://gravatar.com/emails"}) to return true, got false
     # ./spec/requests/user_pages_spec.rb:72:in `block (4 levels) in <top (required)>'

Finished in 1.88 seconds
53 examples, 7 failures

Failed examples:

rspec ./spec/requests/user_pages_spec.rb:57 # User pages profile page signup with valid information after saving the user 
rspec ./spec/requests/user_pages_spec.rb:58 # User pages profile page signup with valid information after saving the user 
rspec ./spec/requests/user_pages_spec.rb:59 # User pages profile page signup with valid information after saving the user 
rspec ./spec/requests/user_pages_spec.rb:78 # User pages profile page with invalid information 
rspec ./spec/requests/user_pages_spec.rb:70 # User pages profile page page 
rspec ./spec/requests/user_pages_spec.rb:71 # User pages profile page page 
rspec ./spec/requests/user_pages_spec.rb:72 # User pages profile page page 

故障：
1） 保存用户后，使用有效信息注册用户页面配置文件页面
失败/错误：{访问用户\路径（用户）}之前
命名错误：
未定义的方法“paginate”#
#./app/controllers/users\u controller.rb:4:in'index'
#./spec/requests/user\u pages\u spec.rb:16:in'block（3级）in'
2） 保存用户后，使用有效信息注册用户页面配置文件页面
失败/错误：{访问用户\路径（用户）}之前
命名错误：
未定义的方法“paginate”#
#./app/controllers/users\u controller.rb:4:in'index'
#./spec/requests/user\u pages\u spec.rb:16:in'block（3级）in'
3） 保存用户后，使用有效信息注册用户页面配置文件页面
失败/错误：{访问用户\路径（用户）}之前
命名错误：
未定义的方法“paginate”#
#./app/controllers/users\u controller.rb:4:in'index'
#./spec/requests/user\u pages\u spec.rb:16:in'block（3级）in'
4） 包含无效信息的用户页面配置文件页面
失败/错误：{单击按钮“保存更改”之前}
Capybara:：ElementNotFound:
找不到“保存更改”按钮
#./spec/requests/user\u pages\u spec.rb:76:in'block（4级）in'
5） 用户页面配置文件页面
失败/错误：它{应该有_内容（“更新您的配置文件”）}
期望#has_content？（“更新您的个人资料”）返回true，得到false
#./spec/requests/user\u pages\u spec.rb:70:in'block（4级）in'
6） 用户页面配置文件页面
失败/错误：它{应该有_标题（“编辑用户”）}
期望#has_title？（“编辑用户”）返回true，得到false
#./spec/requests/user\u pages\u spec.rb:71:in'block（4级）in'
7） 用户页面配置文件页面
失败/错误：它{应该有_链接（'change'，href:'http://gravatar.com/emails') }
应为#has_link？（“更改”，{:href=>”http://gravatar.com/emails“}）要返回true，则返回false
#./spec/requests/user\u pages\u spec.rb:72:in'block（4级）in'
以1.88秒完成
53例，7例失败
失败的示例：
rspec./spec/requests/user_pages_spec.rb:57#用户页面配置文件页面保存用户后使用有效信息注册
rspec./spec/requests/user_pages_spec.rb:58#用户页面配置文件页面保存用户后使用有效信息注册
rspec./spec/requests/user_pages_spec.rb:59#用户页面配置文件页面保存用户后使用有效信息注册
rspec./spec/requests/user_pages_spec.rb:78#用户页面配置文件页面包含无效信息
rspec./spec/requests/user_pages_spec.rb:70#user pages profile page
rspec./spec/requests/user_pages_spec.rb:71#user pages profile page
rspec./spec/requests/user_pages_spec.rb:72#user pages profile page

问题似乎出在您的

会话#create

方法上：

  def create
    user = User.find_by(email: params[:session][:email].downcase)
    if user && user.authenticate(params[:session][:password])
      # Sign the user in and redirect to the user's show page.
    else
      flash.now[:error] = 'Invalid email/password combination'
      render 'new'
    end
  end

我怀疑你是在有注释的地方结束的，在这一点上它“通过”Rails标准控制器代码，然后它会查找与此相对应的

create

sessions视图，这就是

create

controller方法

如果您在Hartl github存储库中签出相应的代码，则其：

  def create
    user = User.authenticate(params[:session][:email],
                             params[:session][:password])
    if user.nil?
      flash.now[:error] = "Invalid email/password combination."
      @title = "Sign in"
      render 'new'
    else
      sign_in user
      redirect_back_or user
    end
  end

---

至于您是如何到达那里的，似乎

登录用户

方法成功地进入并通过您的会话

新建

控制器和查看代码。您眼中的

submit

将您带到会话#创建点。

好吧，如果您查看第一组错误，它们都发生在

登录用户

，因此共享该代码会很有帮助。谢谢，我包括了utilities.rb，如果这是相关代码的话。好的，看来问题在于访问

signin_path

，因此查看（或共享）您的路由（例如使用

rake routes

）并共享获取

signin_path

方法的代码对于rake routes，我获取

signin GET/signin（：格式）sessions#new

我不确定在这种情况下，

code

是什么，但看起来您需要共享您的

sessions\u控制器。rb

文件我知道这是违反直觉的，但Hartl确实在本章后面的9.19中将代码更改为底部代码，但在改变一系列其他代码以适应这种变化之前。我知道这是一个理想的代码，但它可能还不起作用，我只是在努力按照正确的顺序阅读教程。我插入了新代码，出现了16个错误。谢谢您的帮助。至少在当前版本的教程中，您缺少的代码在清单8.13的第8.2节中介绍了，它还原了早期Hartl中的一些代码，只出现了7个错误。您看到我之前关于清单8.13的评论了吗？您一直都在遵循教程并传递吗？

Failures:

  1) User pages profile page signup with valid information after saving the user 
     Failure/Error: before { visit user_path(user) }
     NoMethodError:
       undefined method `paginate' for #<Class:0xa6de278>
     # ./app/controllers/users_controller.rb:4:in `index'
     # ./spec/requests/user_pages_spec.rb:16:in `block (3 levels) in <top (required)>'

  2) User pages profile page signup with valid information after saving the user 
     Failure/Error: before { visit user_path(user) }
     NoMethodError:
       undefined method `paginate' for #<Class:0xa6de278>
     # ./app/controllers/users_controller.rb:4:in `index'
     # ./spec/requests/user_pages_spec.rb:16:in `block (3 levels) in <top (required)>'

  3) User pages profile page signup with valid information after saving the user 
     Failure/Error: before { visit user_path(user) }
     NoMethodError:
       undefined method `paginate' for #<Class:0xa6de278>
     # ./app/controllers/users_controller.rb:4:in `index'
     # ./spec/requests/user_pages_spec.rb:16:in `block (3 levels) in <top (required)>'

  4) User pages profile page with invalid information 
     Failure/Error: before { click_button "Save changes" }
     Capybara::ElementNotFound:
       Unable to find button "Save changes"
     # ./spec/requests/user_pages_spec.rb:76:in `block (4 levels) in <top (required)>'

  5) User pages profile page page 
     Failure/Error: it { should have_content("Update your profile") }
       expected #has_content?("Update your profile") to return true, got false
     # ./spec/requests/user_pages_spec.rb:70:in `block (4 levels) in <top (required)>'

  6) User pages profile page page 
     Failure/Error: it { should have_title("Edit user") }
       expected #has_title?("Edit user") to return true, got false
     # ./spec/requests/user_pages_spec.rb:71:in `block (4 levels) in <top (required)>'

  7) User pages profile page page 
     Failure/Error: it { should have_link('change', href: 'http://gravatar.com/emails') }
       expected #has_link?("change", {:href=>"http://gravatar.com/emails"}) to return true, got false
     # ./spec/requests/user_pages_spec.rb:72:in `block (4 levels) in <top (required)>'

Finished in 1.88 seconds
53 examples, 7 failures

Failed examples:

rspec ./spec/requests/user_pages_spec.rb:57 # User pages profile page signup with valid information after saving the user 
rspec ./spec/requests/user_pages_spec.rb:58 # User pages profile page signup with valid information after saving the user 
rspec ./spec/requests/user_pages_spec.rb:59 # User pages profile page signup with valid information after saving the user 
rspec ./spec/requests/user_pages_spec.rb:78 # User pages profile page with invalid information 
rspec ./spec/requests/user_pages_spec.rb:70 # User pages profile page page 
rspec ./spec/requests/user_pages_spec.rb:71 # User pages profile page page 
rspec ./spec/requests/user_pages_spec.rb:72 # User pages profile page page 

  def create
    user = User.find_by(email: params[:session][:email].downcase)
    if user && user.authenticate(params[:session][:password])
      # Sign the user in and redirect to the user's show page.
    else
      flash.now[:error] = 'Invalid email/password combination'
      render 'new'
    end
  end

  def create
    user = User.authenticate(params[:session][:email],
                             params[:session][:password])
    if user.nil?
      flash.now[:error] = "Invalid email/password combination."
      @title = "Sign in"
      render 'new'
    else
      sign_in user
      redirect_back_or user
    end
  end