Michael Hartl的Rails教程第8.1章Rspec錯誤

Question

首先我非常感謝大家花時間回顧我的問題。

我是一名通過Michael Hartl的Rails Tutorial學習的導軌菜鳥，我在運行我的Rspec時遇到以下錯誤消息。

1) Authentication with valid information 
    Failure/Error: click_button "Sign in" 
    ActionView::MissingTemplate: 
     Missing template sessions/create, application/create with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in: 
     * "/Users/Ladarris/rails_projects/sample_app/app/views" 
    # ./spec/requests/authentication_pages_spec.rb:24:in `block (3 levels) in <top (required)>' 

    2) Authentication with valid information 
    Failure/Error: click_button "Sign in" 
    ActionView::MissingTemplate: 
     Missing template sessions/create, application/create with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in: 
     * "/Users/Ladarris/rails_projects/sample_app/app/views" 
    # ./spec/requests/authentication_pages_spec.rb:24:in `block (3 levels) in <top (required)>' 

    3) Authentication with valid information 
    Failure/Error: click_button "Sign in" 
    ActionView::MissingTemplate: 
     Missing template sessions/create, application/create with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in: 
     * "/Users/Ladarris/rails_projects/sample_app/app/views" 
    # ./spec/requests/authentication_pages_spec.rb:24:in `block (3 levels) in <top (required)>' 

    4) Authentication with valid information 
    Failure/Error: click_button "Sign in" 
    ActionView::MissingTemplate: 
     Missing template sessions/create, application/create with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in: 
     * "/Users/Ladarris/rails_projects/sample_app/app/views" 
    # ./spec/requests/authentication_pages_spec.rb:24:in `block (3 levels) in <top (required)>' 

Finished in 0.71396 seconds 
42 examples, 4 failures 

我意識到錯誤消息意味着，我很想念app/views/sessions/create.html.erb但其應該是在尋找app/views/sessions/new.html.erb由教程說明。

每當我繼續創建app/views/sessions/create.html.erb時，都會返回以下錯誤消息。

失敗：

1) Authentication with valid information 
    Failure/Error: it { should have_link('Profile',  href: user_path(user), visible: false) } 
     expected #has_link?("Profile", {:href=>"https://stackoverflow.com/users/1", :visible=>false}) to return true, got false 
    # ./spec/requests/authentication_pages_spec.rb:27:in `block (3 levels) in <top (required)>' 

    2) Authentication with valid information 
    Failure/Error: it { should have_link('Sign out', href: signout_path) } 
     expected #has_link?("Sign out", {:href=>"/signout"}) to return true, got false 
    # ./spec/requests/authentication_pages_spec.rb:28:in `block (3 levels) in <top (required)>' 

    3) Authentication with valid information 
    Failure/Error: it { should have_title(user.name) } 
     expected #has_title?("John Smith") to return true, got false 
    # ./spec/requests/authentication_pages_spec.rb:26:in `block (3 levels) in <top (required)>' 

下面是我的代碼拷貝。 _ __ _ __ _ __ _ __ _ __ _ __ _

Rspec的測試

require 'spec_helper' 

describe "Authentication" do 
    subject { page } 
    describe "signin page" do 
    before { visit signin_path } 
    it { should have_content('Sign in') } 
    it { should have_title('Sign in') } 
    end 
    describe "signin" do 
     before { visit signin_path } 
     describe "with invalid information" do 
     before { click_button "Sign in" } 
     it { should have_title('Sign in') } 
     it { should have_selector('div.alert.alert-error', text: 'Invalid') } 
     end 
    end 
    describe "with valid information" do 
      let(:user) { FactoryGirl.create(:user) } 
      before do 
      visit signin_path 
      fill_in "Email", with: user.email.upcase 
      fill_in "Password", with: user.password 
      click_button "Sign in" 
      end 
      it { should have_title(user.name) } 
      it { should have_link('Profile',  href: user_path(user), visible: false) } 
      it { should have_link('Sign out', href: signout_path) } 
      it { should_not have_link('Sign in', href: signin_path) } 
    end 
end 

會話控制器

class SessionsController < ApplicationController 

    def new 
    end 

    def create 
    user = User.find_by(email: params[:session][:email].downcase) 
    if user && user.authenticate(params[:session][:password]) 

    else 
     flash.now[:error] = 'Invalid email/password combination' 
     render 'new' 
    end 
    end 

    def destroy 
    end 
end 

應用程序/視圖/會話/ new.html.erb

<% provide(:title, "Sign in") %> 
<h1>Sign in</h1> 

<div class="row"> 
    <div class="span6 offset3"> 
    <%= form_for(:session, url: sessions_path) do |f| %> 

     <%= f.label :email %> 
     <%= f.text_field :email %> 

     <%= f.label :password %> 
     <%= f.password_field :password %> 

     <%= f.submit "Sign in", class: "btn btn-large btn-primary" %> 
    <% end %> 

    <p>New user? <%= link_to "Sign up now!", signup_path %></p> 
    </div> 
</div> 

的routes.rb

SampleApp::Application.routes.draw do 
    resources :users 
    resources :sessions,  only: [:new, :create, :destroy] 
    root to: 'static_pages#home' 
    match '/signup', to: 'users#new',   via: 'get' 
    match '/signin', to: 'sessions#new',   via: 'get' 
    match '/signout', to: 'sessions#destroy',  via: 'delete' 
    match '/help', to: 'static_pages#help', via: 'get' 
    match '/about', to: 'static_pages#about', via: 'get' 
    match '/contact', to: 'static_pages#contact', via: 'get' 

    # The priority is based upon order of creation: first created -> highest priority. 
    # See how all your routes lay out with "rake routes". 

    # You can have the root of your site routed with "root" 
    # root to: 'welcome#index' 

    # Example of regular route: 
    # get 'products/:id' => 'catalog#view' 

    # Example of named route that can be invoked with purchase_url(id: product.id) 
    # get 'products/:id/purchase' => 'catalog#purchase', as: :purchase 

    # Example resource route (maps HTTP verbs to controller actions automatically): 
    # resources :products 

    # Example resource route with options: 
    # resources :products do 
    #  member do 
    #  get 'short' 
    #  post 'toggle' 
    #  end 
    # 
    #  collection do 
    #  get 'sold' 
    #  end 
    # end 

    # Example resource route with sub-resources: 
    # resources :products do 
    #  resources :comments, :sales 
    #  resource :seller 
    # end 

    # Example resource route with more complex sub-resources: 
    # resources :products do 
    #  resources :comments 
    #  resources :sales do 
    #  get 'recent', on: :collection 
    #  end 
    # end 

    # Example resource route within a namespace: 
    # namespace :admin do 
    #  # Directs /admin/products/* to Admin::ProductsController 
    #  # (app/controllers/admin/products_controller.rb) 
    #  resources :products 
    # end 
end 

Answer 1

這是在尋找new.html.erb，但是當它在該視圖中到達f.submit，生成另一個請求，並且它在會話控制器中執行create方法。但是，您沒有if分支的任何代碼（即，當用戶存在時），因此需要使用名稱create來嘗試渲染視圖的默認操作。

如果仔細檢查，我懷疑你會發現你還沒有實現本教程要求你在本教程中實現的一些代碼。

Answer 2

確保控制器具有if語句實現 - >應用程序/控制器/ users_controller.rb

def create 
    @user = User.new(user_params) 

    if @user.save 
    redirect_to @user #This statement is important 
    else 
    render 'new' 
    end 
end