ruby-on-rails - 覆盖嵌套的命名路由参数

Question

来自 Rails docs ，可以简单地这样做:

resources :videos, param: :identifier

但是，如果我有嵌套资源怎么办？以下是路线:

resources :videos
  resources :images
end

上面生成的路由如下:

video_images GET  /videos/:video_id/images(.:format)                  images#index

如何从路由中覆盖 :video_id？在这种情况下，我似乎无法使用 param。

Answer 1

我将尝试增强链接问题中未被接受的答案:https://stackoverflow.com/a/29138733/2405850

尝试使用 member 的嵌套 - 它将禁用父资源 id 的默认附加。

但是这会给我们可能想要保留的东西带来问题，比如帮助者的名字。解决此问题的一种方法 - 使用 as(参见下面的示例)。

此外，我有类似的问题，仍然想要其他 url 的默认 id(例如，默认视频 CRUD 或视频是唯一可能的父级)。所以我终于想出了这个:

resources :videos do
  resources :snapshots
end

resources :videos, param: :imageable_id, only: [] do
  member do
    resources :images, as: 'video_images'
  end
end

resources :users, param: :imageable_id, only: [] do
  member do
    resources :images, as: 'user_images'
  end
end

上面的代码将生成以下路由:

    video_snapshots GET    /videos/:video_id/snapshots(.:format)           snapshots#index
                    POST   /videos/:video_id/snapshots(.:format)           snapshots#create
 new_video_snapshot GET    /videos/:video_id/snapshots/new(.:format)       snapshots#new
edit_video_snapshot GET    /videos/:video_id/snapshots/:id/edit(.:format)  snapshots#edit
     video_snapshot GET    /videos/:video_id/snapshots/:id(.:format)       snapshots#show
                    PATCH  /videos/:video_id/snapshots/:id(.:format)       snapshots#update
                    PUT    /videos/:video_id/snapshots/:id(.:format)       snapshots#update
                    DELETE /videos/:video_id/snapshots/:id(.:format)       snapshots#destroy
             videos GET    /videos(.:format)                               videos#index
                    POST   /videos(.:format)                               videos#create
          new_video GET    /videos/new(.:format)                           videos#new
         edit_video GET    /videos/:id/edit(.:format)                      videos#edit
              video GET    /videos/:id(.:format)                           videos#show
                    PATCH  /videos/:id(.:format)                           videos#update
                    PUT    /videos/:id(.:format)                           videos#update
                    DELETE /videos/:id(.:format)                           videos#destroy
       video_images GET    /videos/:imageable_id/images(.:format)          images#index
                    POST   /videos/:imageable_id/images(.:format)          images#create
    new_video_image GET    /videos/:imageable_id/images/new(.:format)      images#new
   edit_video_image GET    /videos/:imageable_id/images/:id/edit(.:format) images#edit
        video_image GET    /videos/:imageable_id/images/:id(.:format)      images#show
                    PATCH  /videos/:imageable_id/images/:id(.:format)      images#update
                    PUT    /videos/:imageable_id/images/:id(.:format)      images#update
                    DELETE /videos/:imageable_id/images/:id(.:format)      images#destroy
        user_images GET    /users/:imageable_id/images(.:format)           images#index
                    POST   /users/:imageable_id/images(.:format)           images#create
     new_user_image GET    /users/:imageable_id/images/new(.:format)       images#new
    edit_user_image GET    /users/:imageable_id/images/:id/edit(.:format)  images#edit
         user_image GET    /users/:imageable_id/images/:id(.:format)       images#show
                    PATCH  /users/:imageable_id/images/:id(.:format)       images#update
                    PUT    /users/:imageable_id/images/:id(.:format)       images#update
                    DELETE /users/:imageable_id/images/:id(.:format)       images#destroy

因此，对于所有其他可成像类，您将不得不添加另一个像上面那样的丑陋结构，但它至少应保留其他内容并按预期运行。