你可以这样做

Rails.application.routes.recognize_path "/your/path"

它在rails 3.1.0.rc4中为我工作

你可以这样做

Rails.application.routes.recognize_path "/your/path"

它在rails 3.1.0.rc4中为我工作

要查找URI:

current_uri = request.env['PATH_INFO']
# If you are browsing http://example.com/my/test/path, 
# then above line will yield current_uri as "/my/test/path"

找到路径，即控制器，动作和参数:

path = ActionController::Routing::Routes.recognize_path "/your/path/here/"

# ...or newer Rails versions:
#
path = Rails.application.routes.recognize_path('/your/path/here')

controller = path[:controller]
action = path[:action]
# You will most certainly know that params are available in 'params' hash

你可以通过rake:routes看到所有的路由(这可能对你有帮助)。

或者更优雅地说:request.path_info

来源: 请求机架文档

如果你想在视图中对某些东西进行特殊处理，你可以使用current_page?如:

<% if current_page?(:controller => 'users', :action => 'index') %>

.．.或者一个动作和id。

<% if current_page?(:controller => 'users', :action => 'show', :id => 1) %>

.．.或者一条命名的路线……

<% if current_page?(users_path) %>

…

<% if current_page?(user_path(1)) %>

因为current_page ?需要控制器和动作，当我只关心控制器时，我做一个current_controller?方法:

  def current_controller?(names)
    names.include?(current_controller)
  end

像这样使用它:

<% if current_controller?('users') %>

.．.这也适用于多个控制器名称…

<% if current_controller?(['users', 'comments']) %>