define timeperiod {
  timeperiod_name   <%= @ng_timeperiod_name %>
  alias             <%= @ng_timeperiod_alias %>
  monday            <%= @ng_timep_monday %>
  tuesday           <%= @ng_timep_tuesday %>
  wednesday         <%= @ng_timep_wednesday %>
  thursday          <%= @ng_timep_thursday %>
  friday            <%= @ng_timep_friday %>
  saturday          <%= @ng_timep_saturday %>
  sunday            <%= @ng_timep_sunday %>
  }
<% unless @ng_timep_special.empty? -%>
define timeperiod {
  timeperiod_name       <%= @ng_timeperiod_name %>
  @ng_timep_special_01
  }
<% end -%>