How to select the desired elements in a list in Dart, and change the data of this element - flutter

Question

I have an array with such data (more data in reality)
[
{
serviceid: "979cf8e6",
amount: 1,
price: 0,
materialsPrice: 100,
enable: true,
chenge: true
},
{
serviceid: "979cf812",
amount: 1,
price: 15.5,
materialsPrice: 0,
enable: true,
chenge: false
}
]
My goal is to change "enable" to the desired status in the selected element of the array. For this I will use a block. That is, if when I click on the event, I transfer (false and "979cf8e6") . Then the required element should be found (service = 979cf8e6). And this element should have enable on false. I tried to start something, but it didn't work. Maybe someone knows how to do it?))
on<OnChangeStatusListItemClick>((event, emit) async {
var serviceId = event.serviceId;//(my serviceId here)
var paymentStatus = event.status;//(my new status here)
var paymentDetails = state.listVariant; //(my list here)
PaymentDetailsModel? selected;
paymentDetails = paymentDetails.map((paymentDetailsOne) {
paymentDetailsOne.serviceid == serviceId;
var selectedPaymentDetails = paymentDetailsOne.copyWith(enable: paymentStatus);
return selectedPaymentDetails;
}).toList();
emit(state.copyWith(listVariant: paymentDetails));
});
My PaymentDetailsModel model (this model is used in listVariant)
#freezed
class PaymentDetailsModel with _$PaymentDetailsModel {
#JsonSerializable(fieldRename: FieldRename.none, explicitToJson: true)
const factory PaymentDetailsModel({
required String serviceid,
required double? price,
required int? minmal,
required int amount,
required bool enable,
required bool chenge,
}) = _PaymentDetailsModel;
factory PaymentDetailsModel.fromJson(Map<String, dynamic> json) =>
_$PaymentDetailsModelFromJson(json);
}

Answer 1

I think maybe you miss if else check in your map function, not pretty sure, but you can try :
on<OnChangeStatusListItemClick>((event, emit) async {
final serviceId = event.serviceId;//(my serviceId here)
final paymentStatus = event.status;//(my new status here)
final paymentDetails = state.listVariant.map((paymentDetailsOne) {
if ( paymentDetailsOne.serviceid == serviceId) {
return paymentDetailsOne.copyWith(enable: paymentStatus);
} else {
return paymentDetailsOne;
}
}).toList();
emit(state.copyWith(listVariant: paymentDetails));
});