Question

在Rails 5.2中我有一个这样的路由文件：

Rails.application.routes.draw do
  resources :posts do
    resource :comments
  end

  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
end

为什么没有/posts/:post_id/comments路线列出该帖子的所有评论（comments#index）？和/posts/:post_id/comments/:id路线以显示单个特定评论。路线如下所示：

>rake routes
                   Prefix Verb   URI Pattern                                                                              Controller#Action
        new_post_comments GET    /posts/:post_id/comments/new(.:format)                                                   comments#new
       edit_post_comments GET    /posts/:post_id/comments/edit(.:format)                                                  comments#edit
            post_comments GET    /posts/:post_id/comments(.:format)                                                       comments#show
                          PATCH  /posts/:post_id/comments(.:format)                                                       comments#update
                          PUT    /posts/:post_id/comments(.:format)                                                       comments#update
                          DELETE /posts/:post_id/comments(.:format)                                                       comments#destroy
                          POST   /posts/:post_id/comments(.:format)                                                       comments#create
                    posts GET    /posts(.:format)                                                                         posts#index
                          POST   /posts(.:format)                                                                         posts#create
                 new_post GET    /posts/new(.:format)                                                                     posts#new
                edit_post GET    /posts/:id/edit(.:format)                                                                posts#edit
                     post GET    /posts/:id(.:format)                                                                     posts#show
                          PATCH  /posts/:id(.:format)                                                                     posts#update
                          PUT    /posts/:id(.:format)                                                                     posts#update
                          DELETE /posts/:id(.:format)                                                                     posts#destroy
       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

这是自Rails 4.2以来的更改吗？这是我第一次玩5.2，而我的大部分经验是在3.2之前。

Answer 1

为什么没有/ posts /：post_id / comments路线

有：

post_comments GET    /posts/:post_id/comments(.:format)        comments#show

[为什么不在那里] / posts /：post_id / comments /：id路径以显示单个特定评论

因为您为resource使用了comments（单数），所以表示没有多个注释。似乎您想使用resources :comments。

为什么子资源没有索引？

1 个答案: