tabs_helper.rb

module TabsHelper
  
  # takes the block  
  def tabs_for(current_tab, &block)
    yield Tab.new(current_tab, self)
  end
    
  class Tab
    def initialize(current_tab, template)
      @current_tab = current_tab
      @template = template
    end
    
    def link_to(*args)
      "<li #{active_class(*args)}>#{@template.link_to(*args)}</li>"
    end
    
  private
    def active_class(*args)
      if @current_tab.all? { |k, v| args[1][k] == v  }
        "class = 'active'"
      end
    end    
  end #class Tab
  
end