ruby-on-rails - ActionController::UrlGenerationError:尝试测试 Controller 时没有路由匹配

Question

当我尝试测试目标 Controller 时，出现 ActionController::UrlGenerationError: No route matches (:action => "edit", :controller => "goals") 错误

这是我的 goals_controller_test.rb

require 'test_helper'

class GoalsControllerTest < ActionController::TestCase
  test "should be redirected when not logged in" do
    get :new
    assert_response :redirect
    assert_redirected_to new_user_session_path
  end

  test "should render the new page when logged in" do 
    sign_in users(:guillermo)
    get :new
    assert_response :success
  end

  test "should get edit" do
    get :edit
    assert_response :success
  end

  test "should get show" do
    get :show
    assert_response :success
  end
end

这是我的routes.rb

Rails.application.routes.draw do
  devise_for :users

  authenticated :user do
    root 'du#dashboard', as: "authenticated_root"
  end

  resources :goals

  root 'du#Home'

end

我的goals_controller.rb

class GoalsController < ApplicationController
  before_filter :authenticate_user!, only: [:new]

  def new
  end

  def edit
  end

  def show
  end

  private

  def find_user
    @user = User.find(params[:user_id])
  end

  def find_goal
    @goal = Goal.find(params[:id])
  end
end

我觉得很奇怪，如果我使用 get 'goals/edit' 而不是 resources :goals 测试通过。

非常感谢您提供任何指南。

Answer 1

当您使用 resources :goals 时，Rails 会为您生成以下路由(RESTful):

    goals GET    /goals(.:format)          goals#index
          POST   /goals(.:format)          goals#create
 new_goal GET    /goals/new(.:format)      goals#new
edit_goal GET    /goals/:id/edit(.:format) goals#edit
     goal GET    /goals/:id(.:format)      goals#show
          PATCH  /goals/:id(.:format)      goals#update
          PUT    /goals/:id(.:format)      goals#update
          DELETE /goals/:id(.:format)      goals#destroy

如您所见，要点击 edit 操作 /goals/:id/edit，您需要传递一个 :id。这样，在您的 Controller 中，您将能够通过给定的 :id => Goal.find(params[:id]) 找到记录。因此，在您的测试中，您需要传递此 :id，类似于:

get :edit, id: 1 # mapping to /goals/1/edit

如果您手动添加此路由 get 'goals/edit'，它会起作用，因为它直接映射到 /goals/edit(注意没有 : id).

顺便说一句，我建议您查看官方路由指南:http://guides.rubyonrails.org/routing.html