自动在嵌套资源中添加父模型ID [英] Automatically add parent model id in nested resources

问题描述

在Rails 3中具有嵌套的资源路由，例如:

With nested resource routes in Rails 3, such as the following:

resources :magazines do
  resources :ads
end

定义了诸如magazine_ad_path之类的

helper，我必须同时向其传递杂志和广告，如果仅引用广告，这将很不方便:

helpers such as magazine_ad_path are defined, to which I have to pass both a magazine and the ad, which is inconvenient if I just have a reference to the ad:

magazine_ad_path(@ad.magazine, @ad)

是否有一种很好的方法来设置一个ad_path辅助程序，该辅助程序使用@ad并返回包括杂志ID在内的适当地址? (这也将允许使用link_to @ad，redirect_to @ad等，它们会自动调用与模型类相对应的ad_path帮助器.)

Is there a nice way to set up an ad_path helper that takes the @ad and returns the appropriate address including the magazine ID? (This would also then allow the use of link_to @ad, redirect_to @ad, etc., which automatically call the ad_path helper corresponding to the model class.)

推荐答案

浅层路由似乎是您想要的.您可以按以下方式实现浅层嵌套:

Shallow Routing seems to be what you're looking for. You can implement shallow nesting as below :

resources :magazines do
  shallow do
    resources :ads
  end
end

OR

resources :magazines, :shallow => true do
  resources :ads
end

仅嵌套索引和新操作.

Only the index and the new actions are nested.

使用嵌套资源往往会生成较长的URL，浅层嵌套有助于删除某些操作不必要的部分(也包含父资源路由)(因为可以从持久性子记录中获取父资源)

Using nested resources tends to generate long URLs, shallow nesting helps remove parts (that contain the parent resource route as well) that aren't necessarily required for certain actions(since a parent resource can be derived from a persisted child record).

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