显示已预订用户的常规列表

Question

我创建了一个应用程序，用户可以在其中预订一小时的培训。我想为管理员用户提供在每个培训小时内查看已预订用户的一般列表的选项。

我

试图创建这个索引，但它给了我以下错误：

ActionController：：UrlGenerationError in Trainings#index

无路由匹配 {：action=>"index"， ：controller=>"bookings"， ：training_id=>nil}缺少必需的密钥：[：training_id]

我试图在训练索引处创建这个按钮，如下所示：

培训索引.html.erb视图：

<h1>Hours</h1>
<ul class="trainings">
  <% @trainings.each do |training| %>
  <li>
    <%= link_to training.hour, training_path(training) %>
  </li>
  <% end %>
</ul>
<%= render 'bookings/general_list' if logged_in? %>

_general_list.html.erb 视图：

<ul class="bookings">
<% @trainings.each do |training| %>
<%= link_to "General list", training_bookings_path(@training), class: "btn btn-primary"  %>    
<% end %>
</ul>

我现在想如何完成这项工作，我认为我的想法行不通。

我的路线.rb：

Rails.application.routes.draw do
  root 'static_pages#home'
  get    '/signup',               to: 'users#new'
  get    '/contact',              to: 'static_pages#contact'
  get    '/about',                to: 'static_pages#about'
  get    '/login',                to: 'sessions#new'
  post   '/login',                to: 'sessions#create'
  delete '/logout',               to: 'sessions#destroy'

  resources :account_activations, only: [:edit]
  resources :password_resets,     only: [:new, :create, :edit, :update]
  resources :users
  resources :trainings do
    resources :bookings
  end
end

耙子路由命令：

                 Prefix Verb   URI Pattern                                         Controller#Action
                   root GET    /                                                   static_pages#home
                 signup GET    /signup(.:format)                                   users#new
                contact GET    /contact(.:format)                                  static_pages#contact
                  about GET    /about(.:format)                                    static_pages#about
                  login GET    /login(.:format)                                    sessions#new
                        POST   /login(.:format)                                    sessions#create
                 logout DELETE /logout(.:format)                                   sessions#destroy
edit_account_activation GET    /account_activations/:id/edit(.:format)             account_activations#edit
        password_resets POST   /password_resets(.:format)                          password_resets#create
     new_password_reset GET    /password_resets/new(.:format)                      password_resets#new
    edit_password_reset GET    /password_resets/:id/edit(.:format)                 password_resets#edit
         password_reset PATCH  /password_resets/:id(.:format)                      password_resets#update
                        PUT    /password_resets/:id(.:format)                      password_resets#update
                  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
      training_bookings GET    /trainings/:training_id/bookings(.:format)          bookings#index
                        POST   /trainings/:training_id/bookings(.:format)          bookings#create
   new_training_booking GET    /trainings/:training_id/bookings/new(.:format)      bookings#new
  edit_training_booking GET    /trainings/:training_id/bookings/:id/edit(.:format) bookings#edit
       training_booking GET    /trainings/:training_id/bookings/:id(.:format)      bookings#show
                        PATCH  /trainings/:training_id/bookings/:id(.:format)      bookings#update
                        PUT    /trainings/:training_id/bookings/:id(.:format)      bookings#update
                        DELETE /trainings/:training_id/bookings/:id(.:format)      bookings#destroy
              trainings GET    /trainings(.:format)                                trainings#index
                        POST   /trainings(.:format)                                trainings#create
           new_training GET    /trainings/new(.:format)                            trainings#new
          edit_training GET    /trainings/:id/edit(.:format)                       trainings#edit
               training GET    /trainings/:id(.:format)                            trainings#show
                        PATCH  /trainings/:id(.:format)                            trainings#update
                        PUT    /trainings/:id(.:format)                            trainings#update
                        DELETE /trainings/:id(.:format)                            trainings#destroy

谢谢。

Answer 1

在_general_list.html.erb中，您应该更改@training training