Question

我已经开始研究Chapter 8 of the famous Rails tutorial了。我想我密切关注说明并定义了以下路线：

SampleApp::Application.routes.draw do
resources :users
resources :sessions, only: [:new, :create, :destroy]
root  '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'

会话控制器（/controllers/sessions_controller.rb）定义如下：

class SessionsController < ApplicationController
def new
end
def create
end
def destroy
end
end

在spec / requests / authentication_pages_spec.rb中，我创建了以下测试：

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
end

测试导致以下错误：

Failures:
1) Authentication signin page 
 Failure/Error: before { visit signin_path}
 NameError:
   undefined local variable or method `signin_path' for # 
   <RSpec::Core::ExampleGroup::Nested_2::Nested_1:0x007f98dec05fe8>
   # ./spec/requests/authentication_pages_spec.rb:7:in `block (3 levels) in <top (required)>'
2) Authentication signin page 
 Failure/Error: before { visit signin_path}
 NameError:
   undefined local variable or method `signin_path' for # 
   <RSpec::Core::ExampleGroup::Nested_2::Nested_1:0x007f98dec5cf50>
   # ./spec/requests/authentication_pages_spec.rb:7:in `block (3 levels) in <top (required)>'

即使在routes.rb中定义了 signin_path 命名路由，也无法识别它。我用其他一个（signup_path）替换了那个命名路由，问题就消失了。所以，它是关于这个特定命名路线的东西。你能说出问题所在吗？

rake路由产生以下输出：

sb7904313:sample_app nnikolo$ rake routes
 Prefix Verb   URI Pattern               Controller#Action
     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
           PATCH  /users/:id(.:format)      users#update
           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
    root GET    /                         static_pages#home
  signup GET    /signup(.:format)         users#new
  signin GET    /signin(.:format)         sessions#new
 signout DELETE /signout(.:format)        sessions#destroy
    help GET    /help(.:format)           static_pages#help
   about GET    /about(.:format)          static_pages#about
 contact GET    /contact(.:format)        static_pages#contact

我也重新启动了服务器，它确实不解决了问题（我发了相反的帖子，但我错了）。

Answer 1

试试这个。您可以通过命令rake routes访问路由名称。由于它来自会话控制器，因此默认路由可能类似new_session_path。要更改它，您需要使用as: new_name

指定要在路线中更改内容的内容

match '/signin',  to: 'sessions#new',         via: 'get', as: 'signin'

Answer 2

尝试： -

get "signin" => "sessions#new", :as => "signin"
resources :sessions

将路线用作 new_session_path 或 signin_path

Answer 3

请参阅此主题：undefined method `visit' when using RSpec and Capybara in rails

由于Capybara的最新变化，您可能在config.include Capybara:DSL中没有spec_helper.rb行，而是将测试放在rspec/features/内。

Answer 4

我错误地重新开始解决问题所以撤回这篇文章。

==编辑我发现了rspec这种不稳定行为的罪魁祸首：rails似乎没有清空测试之间的缓存（在我看来，这是一个可怕的bug）。默认情况下，它无法重新读取文件，因此可能会忽略已发生的更改。我在这里提供了更多详细信息：Rails教程：Rails tutorial: undefined method

名为route的Rails无法识别

4 个答案: