如何在Rails中创建自定义的URL帮助程序?

我将把路线定义为:

resources :books do
  resources :reviews, only: [:new, :create, :index]
end

resources :films do
  resources :reviews, only: [:new, :create, :index]
end

这将创建路由为:

books/:book_id/reviews
films/:film_id/reviews

这是定义 nested resources . 更重要的是,它与 Rails polymorphic route helpers .

如果需要,可以使用路由问题来干燥它。

concern :reviewable do
  resources :reviews, only: [:new, :create, :index]
end

resources :books, concerns: :reviewable
resources :films, concerns: :reviewable

它给你命名的路线助手 book_reviews_path(@book) 和 film_reviews_path(@film) . 您还可以使用多态路由帮助器:

<%= link_to "Reviews for #{@reviewable.title}" [@reviewable, :reviews] %>
...
<%= form_for([@reviewable, @reviewable.review.new]) do %>
...
redirect_to [@reviewable, :reviews], notice: 'Review created'