How to get Twitter-Bootstrap navigation to show active link?

Question

I\'m not understanding how Twitter Bootstrap does active links for the navigation. If I have a regular navigation like this (with ruby on rails linking):

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Answer 1

  def active_navigation?(controllers_name, actions_name)
   'active' if controllers_name.include?(controller_name) && actions_name.include?(action_name)
  end

slim

li class=(active_navigation?(['events'], ['index', 'show'])) = link_to t('navbar.events'), events_path