how to get specific id data from firebase as a map? - firebase

Question

I am tried a lot of method for get sub collection data from[enter image description here] cloud firestore image of database
my future builder code
FutureBuilder<BasicInfoModela?>(
future: FirstoreService()
.getDoctorbasicsDetails(id: '123456'),
builder: (context, snapshot) {
switch (snapshot.connectionState) {
case ConnectionState.waiting:
return Center(child: CircularProgressIndicator());
default:
if (snapshot.hasError) {
return buildText("$snapshot");
} else if (snapshot.hasData) {
final data = snapshot.data;
print('called');
print(data);
final provider = Provider.of<WorKProvider>(context);
provider.setData(data!);
return body();
} else {
print('calledb');
return CircularProgressIndicator();
}
}
},
)),
my model code
factory BasicInfoModela.fromData(
Map<String, dynamic> data ) {
return BasicInfoModela(
userId: data['userId'],
firstName: data['firstname'],
lastName: data['lastname'],
email: data['email'],
contactnumber: data['contactnumber'],
dob: data['dod'],
gender: data['gender'],
city: data['city'],
state: data['state'],
country: data['coutry'],
experience: data['experience'],
speclization: data[''],
);
my future code for get data
Future<BasicInfoModela?> getDoctorbasicsDetails({String? id}) async {
try {
var dbdata = _usersCollectionReference.doc(id).snapshots();
String joinString = jsonDecode(dbdata.toString());
print(joinString);
return BasicInfoModela.fromData(jsonDecode(joinString));
} catch (e) {
if (e is PlatformException) {
}
}
}
how can read the sub collection?
in this code i get always null
i know its simple thing but i my case its note working

Answer 1

_usersCollectionReference.doc(id).snapshots()
this will return a Stream<DocumentSnapshot>
Try this code
Future<BasicInfoModela?> getDoctorbasicsDetails({String? id}) async {
try {
var dbdata = await _usersCollectionReference.doc(id).get();
return BasicInfoModela.fromData(dbdata.data);
} catch (e) {
if (e is PlatformException) {}
}
}