module CmAdmin::Models::DslMethod

def sort_direction(direction = :desc)
  raise ArgumentError, "Select a valid sort direction like #{CmAdmin::Models::Action::VALID_SORT_DIRECTION.join(' or ')} instead of #{direction}" unless CmAdmin::Models::Action::VALID_SORT_DIRECTION.include?(direction.to_sym.downcase)
  @current_action.sort_direction = direction.to_sym if @current_action
end