filename = OrderList.generate_order_list(start_at, end_at)
      client_filename = "発注リスト_#{start_at.to_date}-#{end_at.to_date}.tsv"
      logger.info "order_list filename=#{filename}"
      send_file filename, :filename => client_filename.encode("cp932"), :type => 'application/octet-stream'
    elsif params[:submit_not_arrival_list]