:就像在rails routes.rb中一样 [英] :as in rails routes.rb

问题描述

在 config/routes.rb 中，我都尝试了:

In config/routes.rb, I tried both:

root :to => 'things#index', :as => 'things'

和

root :to => 'things#index'

当我点击 http://localhost:3000/ 时，两种方法都有效，似乎没有什么不同.

When I hit http://localhost:3000/, both approaches work, and nothing seems to be different.

:as 选项有什么用?

推荐答案

:as 选项形成一个命名路由.

The :as option forms a named route.

通常用于非根路由.例如:

Usually it's used in a non-root route. For example:

match '/search' => 'search#search', :as => 'search' # SearchController#search

然后您可以执行以下操作:

You could then do something like:

<%= link_to search_path, 'Click Here to Search!' %>

search_path 和 search_url 是因为 :as

对于根路由，您实际上并不需要 :as，因为 URL 帮助程序 root_path 和 root_url 是为您定义的导轨.

For a root route, you don't really need :as because the the URL helpers root_path and root_url are defined for you by Rails.

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