ruby-on-rails - 没有路由匹配获取signup_path

Question

您好，我正在关注 Michael Hartl 的教程，目前在第 7 章。我刚刚添加了一个注册页面，但收到了错误消息:

编辑:添加更多错误消息没有路由匹配 [GET]“/signup_path”Rails.root:C:/Sites/sample_app

这是我的路线文件

SampleApp::Application.routes.draw do 
  resources :users
  root  'static_pages#home'
  match '/signup',  to: 'users#new',             via: 'get'
  match '/help',    to: 'static_pages#help',    via: 'get'
  match '/about',   to: 'static_pages#about',   via: 'get'
  match '/contact', to: 'static_pages#contact', via: 'get'

查看主页文件

<div class="center hero-unit">
  <h1>Welcome to the Sample App</h1>

  <h2>
    This is the home page for the
    <a href="http://railstutorial.org/">Ruby on Rails Tutorial</a>
    sample application.
  </h2>

  <%= link_to "Sign up now!", 'signup_path', class: "btn btn-large btn-primary" %>
</div>

<%= link_to image_tag("rails.png", alt: "Rails"), 'http://rubyonrails.org/' %>

路线

users_path  GET /users(.:format)    users#index
POST    /users(.:format)    users#create
new_user_path   GET /users/new(.:format)    users#new
edit_user_path  GET /users/:id/edit(.:format)   users#edit
user_path   GET /users/:id(.:format)    users#show
PATCH   /users/:id(.:format)    users#update
PUT /users/:id(.:format)    users#update
DELETE  /users/:id(.:format)    users#destroy
root_path   GET /   static_pages#home
signup_path GET /signup(.:format)   users#new
help_path   GET /help(.:format) static_pages#help
about_path  GET /about(.:format)    static_pages#about
contact_path    GET /contact(.:format)  static_pages#contact

Answer 1

路线助手

问题是您将 'signup_path' 作为字符串引用:

<%= link_to "Signup", 'signup_path' %>

这里的问题是，当您引用route / path helper时，您正在调用一个方法。 Rails 中的每个助手都是一个方法 - 这意味着如果您引用字符串，系统将无法调用您需要的方法。

要解决此问题，您应该 read up about using route / path helpers in Rails - 并使用 route 的辅助方法:

<%= link_to "Signup", signup_path %>

--

路线

给你一点奖励:

#config/routes.rb
resources :users, path_names: { new: "signup" }
resources :static_pages, only: [] do
   collection do
      get :help
      get :about
      get :contact
   end
end

您需要使用path_names路由中 users 资源的参数。这将使您的路线更加清洁(DRY)