Changing Current Tab in Rails

Question

I have a list of tabs at the top of my application that I include in a general layout in application.html.erb. They look like this:

Answer 1

I made a helper for this that can accept any number of arguments which is useful for nested resources, but it also accepts a single controller name just like the other answers.

application-helper.rb:

 def is_active(*links)  
   links.each { |link| return "active" if params[:controller] == link }
 end

application.html.erb:

...

Or

Example usage with HAML & nested resource(will be active for any of the provided controller names):

applcation.html.haml:

%li{:class => is_active('blogs', 'comments')}