rangeSpendDeferred method
Implementation
@action
num rangeSpendDeferred(DateTime firstDate, DateTime lastDate) {
var rangespendDeferred = tickets
.where((t) => t.status == true)
.where((t) => t.date.isAfter(firstDate) && t.date.isBefore(lastDate))
.where((t) => t.paymentType == PaymentType.nope)
.where((t) => t.ticketType == TicketType.spendDeferred)
.fold(0,
(num prev, element) => prev + element.totalCostTaxAndPromoIncluded);
return rangespendDeferred.round();
}