奇怪的rspec错误`未定义的方法model_name`

Question

我周围搜索，发现与其他问题的这个问题，但我的应用程序完全工作，这只是我的测试是抛出错误。

_form.html.haml

= simple_form_for @employer_profile do |f| 
=f.error_notification 

.form-inputs 
    =f.input :company_name 
... 


.form-actions 
    =f.button :submit, 'Create Employer profile', id: 'employer-profile-submit' 

我甚至不知道贴什么其他的代码，我没有在该应用的任何定义model_name，没有什么是无任何意见或在我的测试中，当我检查东西。

完全错误

1) Creating Employer Profiles Employer Profile edits a profile 
Failure/Error: visit employer_profiles_edit_path(@user) 
ActionView::Template::Error: 
    undefined method `model_name' for NilClass:Class 
# ./app/views/employer_profiles/_form.html.haml:1:in  `_app_views_employer_profiles__form_html_haml__754845775744985234_44321300' 
# ./app/views/employer_profiles/edit.html.haml:4:in `_app_views_employer_profiles_edit_html_haml__3107954110108075276_44064480' 
# ./spec/features/employer_profiles_spec.rb:44:in `block (3 levels) in <top (required)>' 

employer_profile_controller.rb

class EmployerProfilesController < ApplicationController 
    before_filter :set_user 

    def new 
    @employer_profile = EmployerProfile.new(user_id: @user.id) 
    end 

    def show 
    @employer_profile = EmployerProfile.find_by_user_id(params[:user_id]) 
    end 

    def edit 
    @employer_profile = EmployerProfile.find_by_user_id(params[:user_id]) 
    end 

    def create 
    @employer_profile = EmployerProfile.new(employer_profile_params) 

    respond_to do |format| 
     if @employer_profile.save 
     format.html { redirect_to employer_profile_path(@user), notice: 'Listing was successfully created.' } 
     format.json { render action: 'show', status: :created, location: employer_profile_path(@user) } 
     else 
     format.html { render action: 'new' } 
     format.json { render json: @employer_profile.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

    def update 
    @employer_profile = EmployerProfile.find_by_user_id(params[:user_id]) 

    respond_to do |format| 
     if @employer_profile.update(employer_profile_params) 
     format.html { redirect_to employer_profile_path(@user), notice: 'Employer Profile was successfully updated.' } 
     format.json { head :no_content } 
     else 
     format.html { render action: 'edit' } 
     format.json { render json: @employer_profile.errors, status: :unprocessable_entity } 
     end 
    end 

    end 

    private 

    def set_user 
    @user = current_user 
    end 
    def employer_profile_params 
    params.require(:employer_profile).permit(:company_name, :employer_rating, :description, :website, :city, :state, :email, :address, :zip, :industry).merge!(:user_id => @user.id) 
    end 

end 

编辑：我想我可能已经固定这一怪事下降到simple_form事情。我使用了一个常规的form_for，我现在似乎没有得到这个错误。

employer_profile_feature_spec.rb

require 'spec_helper' 
include Warden::Test::Helpers 
Warden.test_mode! 

    def login_user 
    before(:each) do 
     @user = FactoryGirl.create(:user) 
     login_as(@user) 
    end 
    end 


feature "Creating Employer Profiles" do 

    login_user 

    describe 'Employer Profile' do 
    describe 'create profile' do 
     it 'completes a profile and shows the results' do 
     visit '/' 
     expect{ 
      click_link('New Employer Profile') 
      fill_in 'Company name', with: 'Lost Tie LLC' 
      fill_in 'Employer rating', with: 1 
      fill_in 'Description', with: 'testing text' 
      fill_in 'City', with: 'test-city' 
      fill_in 'State', with: 'test-state' 
      fill_in 'Email', with: 'test@example.com' 
      fill_in 'Website', with: 'www.example.com' 
      fill_in 'Address', with: '123 example street' 
      fill_in 'Zip', with: 12345 
      fill_in 'Industry', with: 'Oil' 
      click_button 'Create Employer profile' 
     }.to change(EmployerProfile,:count).by(1) 

     page.should have_content 'Lost Tie LLC' 
     end 
    end 

    it "edits a profile" do 
     visit employer_profiles_edit_path(@user) 
     expect(EmployerProfile.find_by_user_id(params[:user_id])).to_not be_nil 
    end 

耙路线

employer_profiles_new GET /employer_profiles/new(.:format)   employer_profiles#new 
     employer_profiles POST /employer_profiles(.:format)    employer_profiles#create 
     employer_profile GET /employer_profile/:user_id(.:format)  employer_profiles#show 
    employer_profiles_edit GET /employer_profiles/:user_id/edit(.:format) employer_profiles#edit 
         PUT /employer_profiles/:user_id(.:format)  employer_profiles#update 

Answer 1

@employer_profile是在你看来零 - 所以在你的编辑操作EmployerProfile.find_by_user_id(params[:user_id])将返回零。

如果你想让它抛出一个异常时，它无法找到EmployerProfile，使用方法的爆炸变化（即find_by_user_id!）

我怀疑你的编辑路线提供params[:id]，而你在params[:user_id]上进行查找。检查rake routes的输出或检查控制器中的参数。