Receiving data as null in provider - flutter

Question

This is My Repository
class DB {
final db = FirebaseFirestore.instance;
Stream<QuerySnapshot> init(UserModel user) {
return db
.collection('CollectionName')
.doc(user.email) //this is a unique value which i want to retrieve the value from main after successful login
.collection('New Collection')
.snapshots();
}
void readData(String id, UserModel user) async {
DocumentSnapshot snapshot = await db
.collection('Collection Name')
.doc(user.email)
.collection('New Collection')
.doc(id)
.get();
// ignore: avoid_print
print(snapshot['name']);
}
}
DB db = DB();
This is My BlocFile
class IncidentBloc implements BlocBase {
IncidentBloc(UserModel user) {
db.init(user).listen((data) => _inFirestore.add(data));
}
final _idController = BehaviorSubject<String>();
Stream<String> get outId => _idController.stream;
Sink<String> get _inId => _idController.sink;
final _firestoreController = BehaviorSubject<QuerySnapshot>();
Stream<QuerySnapshot> get outFirestore => _firestoreController.stream;
Sink<QuerySnapshot> get _inFirestore => _firestoreController.sink;
void readData(UserModel user) async {
db.readData(id, user);
}
#override
void dispose() {
_firestoreController.close();
_idController.close();
}
}
And This is my main
void main() async {
WidgetsFlutterBinding.ensureInitialized();
await Firebase.initializeApp();
BlocOverrides.runZoned(
() => runApp(
BlocProviderr(bloc: IncidentBloc(UserModel()), child: const App())
),
blocObserver: AppBlocObserver(),
);
}
It seems that the UserModel is null or empty how do i pass value to my IncidentBloc? And this is after a successful login/authentication. If I do it like this in main: "IncidentBloc(UserModel(email: 'abcde.t#gmail.com'))" It is working, but i want it to dynamically retrieve data based on the user's email not the hardcoded 'abcde.t#gmail.com'

Answer 1

Based on your code, you will need to get the user's email from Firebase and pass it into Incident Bloc. This StackOverflow answer explains how to do that; so does this one.
void main() async {
WidgetsFlutterBinding.ensureInitialized();
await Firebase.initializeApp();
<FirebaseUser> user = await _auth.currentUser();
final mailID = user.email;
BlocOverrides.runZoned(
() => runApp(
BlocProviderr(bloc: IncidentBloc(UserModel(email: mailID)), child: const App())
),
blocObserver: AppBlocObserver(),
);
}