Flutter firebase data model - flutter

Question

class AllRideRequest {
String? name;
String? destinationAddress;
DriverLocation? driverLocation;
AllRideRequest({
this.name,
this.destinationAddress, this.driverLocation
});
AllRideRequest.fromSnapshot(DataSnapshot dataSnapshot) {
name = (dataSnapshot.value as Map)["userName"];
destinationAddress = (dataSnapshot.value as Map)["destinationAddress"];
driverLocation = DriverLocation.fromSnapshot(dataSnapshot);
}
}
class DriverLocation {
double? latitude;
double? longitude;
DriverLocation({
this.latitude,
this.longitude,
});
DriverLocation.fromSnapshot(DataSnapshot dataSnapshot) {
latitude = (dataSnapshot.value as Map)["latitude"];
longitude = (dataSnapshot.value as Map)["longitude"];
}
}
i have a data model like this. Name and destinationAddress has a value but DriverLocation lat long null how can i fix this problem
i want to reach this
https://i.stack.imgur.com/WsoOF.png

Answer 1

Check this
class ResponseData {
String? userName;
String? destinationAddress;
DriverLocation? driverLocation;
ResponseData({this.userName, this.destinationAddress, this.driverLocation});
ResponseData.fromJson(Map<String, dynamic> json) {
userName = json['userName'];
destinationAddress = json['destinationAddress'];
driverLocation = json['driverLocation'] != null
? new DriverLocation.fromJson(json['driverLocation'])
: null;
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['userName'] = this.userName;
data['destinationAddress'] = this.destinationAddress;
if (this.driverLocation != null) {
data['driverLocation'] = this.driverLocation!.toJson();
}
return data;
}
}
class DriverLocation {
String? latitude;
String? longitude;
DriverLocation({this.latitude, this.longitude});
DriverLocation.fromJson(Map<String, dynamic> json) {
latitude = json['latitude'];
longitude = json['longitude'];
}
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data['latitude'] = this.latitude;
data['longitude'] = this.longitude;
return data;
}
}