Highlight tab in menu

Question

I have a menu which is a ul

Home | Calendar | Settings

I want to highlight (via a css class) the selected tab in the menu.

Some lin

Answer 1

Update to @ahmy's answer for Rails 3.2:

def menu_list_item(*args, &block)
  url = args[1]
  mapping =  Rails.application.routes.recognize_path(url)   

  li_class = 'active' if mapping[:controller] == controller.controller_path
  content_tag :li, :class => li_class do
    link_to *args, &block
  end
end

i.e. Rails.application.routes.recognize_path instead of ActionController::Routing::Routes.recognize_path.