%ul.nav
  %li{ class: active_controller('docs') }= link_to 'Home', root_path
  %li{ class: active_controller('parents') }= link_to 'Parents', list_parents_path
  %li{ class: active_controller('children') }= link_to 'Children', list_children_path
  %li{ class: active_controller('pages') }= link_to 'Pages', list_pages_path
  %li{ class: active_controller('staff') }= link_to 'Staff', list_staff_path
  %li{ class: active_controller('users') }= link_to 'Users', list_users_path