Ch。 10.3.4 RoR教程未定義的方法'todo_path'

Question

當我在主頁中包含feed部分時，代碼工作正常。但是，當我添加刪除鏈接的飼料項目，我一直得到'未定義的方法'todo_path''錯誤。有誰能夠幫助我？

這裏是我的Rspec的失敗：

1) Todo pages todo destruction as correct user should delete a todo 
Failure/Error: before { visit root_path } 
ActionView::Template::Error: 
    undefined method `todo_path' for #<#<Class:0x00000004eac910>:0x00000004eb2b08> 

這裏是我的本地主機上的錯誤：

8:  Posted <%= time_ago_in_words(feed_item.created_at) %> ago. 
9: </span> 
10:  <% if current_user?(feed_item.user) %> 
11:   <%= link_to "delete", feed_item, method: :delete, data: { confirm: 'Are you sure?' } %> 
12:  <% end %> 
13: </li> 

這裏是我的_feed_item.html.erb：

<li id="<%= feed_item.id %>"> 
<%= link_to gravatar_for(feed_item.user), feed_item.user %> 
<span class="user"> 
    <%= link_to feed_item.user.username, feed_item.user %> 
</span> 
<span class="entry"><%= feed_item.entry %></span> 
<span class="timestamp"> 
    Posted <%= time_ago_in_words(feed_item.created_at) %> ago. 
</span> 
<% if current_user?(feed_item.user) %> 
    <%= link_to "delete", feed_item, method: :delete, data: { confirm: 'Are you sure?' } %> 
<% end %> 
</li> 

這裏是我的TodosController.rb：

class TodosController < ApplicationController 
before_filter :signed_in_user, only: [:create, :destroy] 
before_filter :correct_user, only: :destroy 

# GET /todos 
# GET /todos.json 
def index 
#@user = User.find(params[:user_id]) 
@user = User.find_by_id(params[:user_id]) 
@todo = @user.todos 

respond_to do |format| 
    format.html # index.html.erb 
    format.json { render json: @todos } 
end 
end 

# GET /todos/1 
# GET /todos/1.json 
def show 
    @todo = Todo.find(params[:id]) 
    @todo.user = User.find_by_id(params[:user_id]) 
    @user = @todo.user 
respond_to do |format| 
    format.html # show.html.erb 
    format.json { render json: @todo } 
end 
end 

# GET /todos/new 
# GET /todos/new.json 
def new 
    @user = current_user 
    @todo = Todo.new 

respond_to do |format| 
    format.html # new.html.erb 
    format.json { render json: @todo } 
end 
end 

# GET /todos/1/edit 
def edit 
    @todo = Todo.find(params[:id]) 
    @todo.user = User.find_by_id(params[:user_id]) 
    @user = @todo.user 
end 

# POST /todos 
# POST /todos.json 
def create 
    @todo = current_user.todos.build(params[:todo]) 
    #@todo.user = User.find_by_id(params[:user_id]) 
    @todo.user = current_user 
    @user = @todo.user 
respond_to do |format| 
    if @todo.save 
    #format.html { redirect_to user_todo_path(@user, @todo), notice: 'Todo was  successfully created.' } 
    format.html { redirect_to user_todo_path(@user, @todo), notice: 'Todo was successfully created!' } 
    format.json { render json: @user, status: :created, location: @user } 
    else 
    @feed_items = [] 
    format.html { render action: "new" } 
    format.json { render json: @todo.errors, status: :unprocessable_entity } 
    end 
end 
end 

# PUT /todos/1 
# PUT /todos/1.json 
def update 
    @todo = Todo.find(params[:id]) 

respond_to do |format| 
    if @todo.update_attributes(params[:todo]) 
    format.html { redirect_to @todo, notice: 'Todo was successfully updated.' } 
    format.json { head :no_content } 
    else 
    format.html { render action: "edit" } 
    format.json { render json: @todo.errors, status: :unprocessable_entity } 
    end 
end 
end 

# DELETE /todos/1 
# DELETE /todos/1.json 
def destroy 
    @todo.destroy 

respond_to do |format| 
    format.html { redirect_to root_url } 
    format.json { head :no_content } 
end 
end 

private 

def correct_user 
    @todo = current_user.todos.find_by_id(params[:id]) 
    redirect_to root_url if @todo.nil? 
end 
end 

編輯： 這裏是我的規格文件（todo_pages_spec.rb）：

require 'spec_helper' 

describe "Todo pages" do 

subject { page } 

let(:user) { FactoryGirl.create(:user) } 
before { sign_in user } 

describe "todo creation" do 
before { visit new_user_todo_path(user) } 

describe "with invalid information" do 

    it "should not create a todo" do 
     expect { click_button 'Submit' }.not_to change(Todo, :count) 
    end 

    describe "error messages" do 
     before { click_button 'Submit' } 
     it { should have_content('error') } 
    end 
end 

describe "with valid information" do 

    before{ fill_in 'Entry', with: "Lorem ipsum" } 
    it "should create a todo" do 
     expect { click_button 'Submit' }.to change(Todo, :count).by(1) 
    end 
end 
end 

describe "todo destruction" do 
    before { FactoryGirl.create(:todo, user: user) } 

describe "as correct user" do 
    before { visit root_path } 

    it "should delete a todo" do 
    expect { click_link "delete" }.to change(Todo, :count).by(-1) 
    end 
end 
end 
end 

這裏是我的routes.rb：

home_index GET /home/index(.:format)     home#index 
user_todos GET /users/:user_id/todos(.:format)   todos#index 
      POST /users/:user_id/todos(.:format)   todos#create 
new_user_todo GET /users/:user_id/todos/new(.:format)  todos#new 
edit_user_todo GET /users/:user_id/todos/:id/edit(.:format) todos#edit 
user_todo GET /users/:user_id/todos/:id(.:format)  todos#show 
      PUT /users/:user_id/todos/:id(.:format)  todos#update 
      DELETE /users/:user_id/todos/:id(.:format)  todos#destroy 
    users GET /users(.:format)       users#index 
      POST /users(.:format)       users#create 
    new_user GET /users/new(.:format)      users#new 
edit_user GET /users/:id/edit(.:format)    users#edit 
     user GET /users/:id(.:format)      users#show 
      PUT /users/:id(.:format)      users#update 
      DELETE /users/:id(.:format)      users#destroy 
    sessions POST /sessions(.:format)      sessions#create 
new_session GET /sessions/new(.:format)     sessions#new 
    session DELETE /sessions/:id(.:format)     sessions#destroy 
    signup  /signup(.:format)      users#new 
    signin  /signin(.:format)      sessions#new 
    signout DELETE /signout(.:format)      sessions#destroy 
     root  /          home#index 

非常感謝你提前！

Answer 1

我認爲問題出在feed_item在你的部分。我並不是Rails的這方面的專家，但是我期望像user_todo_path(feed_item.id)這樣的產生todo_path的基礎上單獨提到ToDo項目，但是沒有這樣的無參數路由。