Question

我有一个叫 Page_controller 的控制器，另一个叫 Categories_controller 。现在，每当调用 Page_controller 中的 home 方法时，我都将被重定向到a´categories控制器，因为从那时起我想控制Category视图。这是我写的：

class PagesController < ApplicationController
  def home
  @categories = Category.all
  redirect_to category_url(@category)
end
end

但是当我打开服务器时，我收到一条错误消息：

undefined method `category_url' for #<PagesController:0x000000000b24ce20>

该行：

redirect_to category_url(@category)

有人知道我如何将控制权从一个控制器传递给另一个控制器吗？我真的很绝望，感谢您能提供的任何帮助

编辑：这是我的route.rb文件：

Rails.application.routes.draw do
  resources :comments
  #resources :categories
  root to: 'pages#home'
  get 'index', to: 'controller_category#index'

  devise_for :users
end

从控制台打印出的路线：

C:\Users\andri\Desktop\proj>bundle exec rake routes
                   Prefix Verb   URI Pattern                                                                              Controller#Action
                 comments GET    /comments(.:format)                                                                      comments#index
                          POST   /comments(.:format)                                                                      comments#create
              new_comment GET    /comments/new(.:format)                                                                  comments#new
             edit_comment GET    /comments/:id/edit(.:format)                                                             comments#edit
                  comment GET    /comments/:id(.:format)                                                                  comments#show
                          PATCH  /comments/:id(.:format)                                                                  comments#update
                          PUT    /comments/:id(.:format)                                                                  comments#update
                          DELETE /comments/:id(.:format)                                                                  comments#destroy
                     root GET    /                                                                                        pages#home
                    index GET    /index(.:format)                                                                         controller_category#index
         new_user_session GET    /users/sign_in(.:format)                                                                 devise/sessions#new
             user_session POST   /users/sign_in(.:format)                                                                 devise/sessions#create
     destroy_user_session DELETE /users/sign_out(.:format)                                                                devise/sessions#destroy
        new_user_password GET    /users/password/new(.:format)                                                            devise/passwords#new
       edit_user_password GET    /users/password/edit(.:format)                                                           devise/passwords#edit
            user_password PATCH  /users/password(.:format)                                                                devise/passwords#update
                          PUT    /users/password(.:format)                                                                devise/passwords#update
                          POST   /users/password(.:format)                                                                devise/passwords#create
 cancel_user_registration GET    /users/cancel(.:format)                                                                  devise/registrations#cancel
    new_user_registration GET    /users/sign_up(.:format)                                                                 devise/registrations#new
   edit_user_registration GET    /users/edit(.:format)                                                                    devise/registrations#edit
        user_registration PATCH  /users(.:format)                                                                         devise/registrations#update
                          PUT    /users(.:format)                                                                         devise/registrations#update
                          DELETE /users(.:format)                                                                         devise/registrations#destroy
                          POST   /users(.:format)                                                                         devise/registrations#create
       rails_service_blob GET    /rails/active_storage/blobs/:signed_id/*filename(.:format)                               active_storage/blobs#show
rails_blob_representation GET    /rails/active_storage/representations/:signed_blob_id/:variation_key/*filename(.:format) active_storage/representations#show
       rails_disk_service GET    /rails/active_storage/disk/:encoded_key/*filename(.:format)                              active_storage/disk#show
update_rails_disk_service PUT    /rails/active_storage/disk/:encoded_token(.:format)                                      active_storage/disk#update
     rails_direct_uploads POST   /rails/active_storage/direct_uploads(.:format)                                           active_storage/direct_uploads#create

Answer 1

取消注释routes.rb文件中的这一行：

#resources :categories

这将为类别定义一组路由，这将为您提供诸如category_url(category)之类的方法。

您还将需要一个CategoriesController，否则您的下一个问题将是重定向会产生错误（没有此类控制器）。并且您需要实现CategoriesController#show。

请参见https://guides.rubyonrails.org/getting_started.html 和https://guides.rubyonrails.org/routing.html

如何在Rails中将控制权从一个控制器传递给另一个控制器？

1 个答案: