Rails教程第10.3.3章 – 4 RSpec错误（应用程序工作）

我得到4个RSpec错误与Will-Paginategem有关，但对于我的生活，我无法弄清楚他们指的是什么。 该应用程序工作正常。

Failures: 1) UsersController GET 'index' for signed-in users should be successful Failure/Error: get :index NoMethodError: undefined method `paginate' for # # ./app/controllers/users_controller.rb:7:in `index' # ./spec/controllers/users_controller_spec.rb:30:in `block (4 levels) in ' 2) UsersController GET 'index' for signed-in users should have the right title Failure/Error: get :index NoMethodError: undefined method `paginate' for # # ./app/controllers/users_controller.rb:7:in `index' # ./spec/controllers/users_controller_spec.rb:35:in `block (4 levels) in ' 3) UsersController GET 'index' for signed-in users should have an element for each user Failure/Error: get :index NoMethodError: undefined method `paginate' for # # ./app/controllers/users_controller.rb:7:in `index' # ./spec/controllers/users_controller_spec.rb:40:in `block (4 levels) in ' 4) UsersController GET 'index' for signed-in users should paginate users Failure/Error: get :index NoMethodError: undefined method `paginate' for # # ./app/controllers/users_controller.rb:7:in `index' # ./spec/controllers/users_controller_spec.rb:47:in `block (4 levels) in ' Finished in 3.12 seconds 80 examples, 4 failures 

我的users_controller.rb文件：

 class UsersController  [:index, :edit, :update] before_filter :correct_user, :only => [:edit, :update] def index @title = "All users" @users = User.paginate(:page => params[:page]) end def show @user = User.find(params[:id]) @title = @user.name + "" end def new @user = User.new @title = "Sign up" end def create @user = User.new(params[:user]) if @user.save sign_in @user flash[:success] = "Welcome to the Sample App!" redirect_to @user else @title = "Sign up" render 'new' end end def edit @user = User.find(params[:id]) @title = "Edit user" end def update @user = User.find(params[:id]) if @user.update_attributes(params[:user]) flash[:success] = "Profile updated." redirect_to @user else @title = "Edit user" render 'edit' end end private def authenticate deny_access unless signed_in? end def correct_user @user = User.find(params[:id]) redirect_to(root_path) unless current_user?(@user) end end 

我的users_controller_spec.rb文件：

 require 'spec_helper' describe UsersController do render_views describe "GET 'index'" do describe "for non-signed-in users" do it "should deny access" do get :index response.should redirect_to(signin_path) flash[:notice].should =~ /sign in/i end end describe "for signed-in users" do before(:each) do @user = test_sign_in(Factory(:user)) second = Factory(:user, :name => "Bob", :email => "[e-mail]") third = Factory(:user, :name => "Ben", :email => "[e-mail]") @users = [@user, second, third] 30.times do @users < Factory.next(:email)) end end it "should be successful" do get :index response.should be_success end it "should have the right title" do get :index response.should have_selector("title", :content => "All users") end it "should have an element for each user" do get :index @users[0..2].each do |user| response.should have_selector("li", :content => user.name) end end it "should paginate users" do get :index response.should have_selector("div.pagination") response.should have_selector("span.disabled", :content => "Previous") response.should have_selector("a", :href => "/users?page=2", :content => "2") response.should have_selector("a", :href => "/users?page=2", :content => "Next") end end end describe "Get 'show'" do before(:each) do @user = Factory(:user) end it "should be successfull" do get :show, :id => @user response.should be_success end it "should find the right user" do get :show, :id => @user assigns(:user).should == @user end it "should have the right title" do get :show, :id => @user response.should have_selector("title", :content => @user.name) end it "should include the user's name" do get :show, :id => @user response.should have_selector("h1", :content => @user.name) end it "should have a profile image" do get :show, :id => @user response.should have_selector("h1>img", :class => "gravatar") end end describe "GET 'new'" do it "should be successful" do get :new response.should be_success end it "should have the right title" do get :new response.should have_selector("title", :content => "Sign up") end end describe "POST 'create'" do describe "failure" do before(:each) do @attr = { :name => "", :email => "", :password => "", :password_confirmation => "" } end it "should not create a user" do lambda do post :create, :user => @attr end.should_not change(User, :count) end it "should have the right title" do post :create, :user => @attr response.should have_selector("title", :content => "Sign up") end it "should render the 'new' page" do post :create, :user => @attr response.should render_template('new') end end describe "success" do before(:each) do @attr = { :name => "New User", :email => "[e-mail]", :height => "192cm", :password => "foobar", :password_confirmation => "foobar" } end it "should create a user" do lambda do post :create, :user => @attr end.should change(User, :count).by(1) end it "should sign the user in" do post :create, :user => @attr controller.should be_signed_in end it "should redirect to the user show page" do post :create, :user => @attr response.should redirect_to(user_path(assigns(:user))) end it "should have a welcome message" do post :create, :user => @attr flash[:success].should =~ /welcome to the sample app/i end end end describe "GET 'edit'" do before(:each) do @user = Factory(:user) test_sign_in(@user) end it "should be successful" do get :edit, :id => @user response.should be_success end it "should have the right title" do get :edit, :id => @user response.should have_selector("title", :content => "Edit user") end it "should have a link to change the Gravatar" do get :edit, :id => @user gravatar_url = "http://gravatar.com/emails" response.should have_selector("a", :href => gravatar_url, :content => "change") end end describe "PUT 'update'" do before(:each) do @user = Factory(:user) test_sign_in(@user) end describe "failure" do before(:each) do @attr = { :email => "", :name => "", :password => "", :password_confirmation => "" } end it "should render the 'edit' page" do put :update, :id => @user, :user => @attr response.should render_template('edit') end it "should have the right title" do put :update, :id => @user, :user => @attr response.should have_selector("title", :content => "Edit user") end end describe "success" do before(:each) do @attr = { :name => "New Name", :email => "[e-mail]", :password => "barbaz", :password_confirmation => "barbaz" } end it "should change the user's attributes" do put :update, :id => @user, :user => @attr @user.reload @user.name.should == @attr[:name] @user.email.should == @attr[:email] end it "should redirect to the user show page" do put :update, :id => @user, :user => @attr response.should redirect_to(user_path(@user)) end it "should have a flash message" do put :update, :id => @user, :user => @attr flash[:success].should =~ /updated/ end end end describe "authentication of edit/update pages" do before(:each) do @user = Factory(:user) end describe "for non-signed-in users" do it "should deny access to 'edit'" do get :edit, :id => @user response.should redirect_to(signin_path) end it "should deny access to 'update'" do put :update, :id => @user, :user => {} response.should redirect_to(signin_path) end end describe "for signed-in users" do before(:each) do wrong_user = Factory(:user, :email => "[e-mail]") test_sign_in(wrong_user) end it "should require matching users for 'edit'" do get :edit, :id => @user response.should redirect_to(root_path) end it "should require matching users for 'update'" do put :update, :id => @user, :user => {} response.should redirect_to(root_path) end end end end 

我知道它与定义paginate方法有关，但是我无法找到（或理解）教程中的任何内容。 任何帮助都是受欢迎的。

Answer 1

您需要将will_paginate gem添加到Gemfile （并确保它位于Gemfile的主要部分， 而不是 group :development块）：

 gem 'will_paginate', '3.0.pre2' 

然后运行bundle install以确保它已安装。 然后你的规格应该通过。

Answer 2

http://ruby.railstutorial.org/chapters/rails-3-1#sec-will_paginate

应该做的伎俩。 该版本的will_paginate存在一个错误。 这是一个快速解决方案。 看看url。