admin_helper.rb

# Renders a menu: http://gist.github.com/368818

# Returns a symbol indicating which of the main tabs is active, based on the current controller.
def get_main_tab
  subtab = controller_name.to_sym
  tab = case subtab
    when :landing then :home
    when :users then :users
    when :exams, :items, :topics then :exams
    when :pages, :menus, :files, :email_templates then :content
    when :settings, :themes then :settings
  end
  if subtab == :settings
    subtab = "#{controller.action_name}_settings".to_sym
  elsif subtab == :users
    subtab = controller.action_name.to_sym
  end
  [tab, subtab]
end