I wanna introduce the stable method for firebase streams with getx, it will work for those who want to paginate too.

[rawquesh]

suppose you have documents of booking,

  RxList<BookingModel> bookings = <BookingModel>[].obs;  // for storing bookings.
  List<StreamSubscription<QuerySnapshot>> streams = []; // for storing subscriptions as list so we can cancel every stream at onClose method.
  RxList<String> bookingsAvailableFor = <String>[].obs; list of dates that already subscribed.

in my case, I am fetching bookings based on the selected date.

  void fetchBookings(DateTime _time) async {
    if (bookingsAvailableFor.contains(BookingModel.getDateAsString(_time))) return; // if stream is already subscribed or not. 
    try {
      final _subscription = FirebaseFirestore.instance
          .collection('bookings')
          .where("selected_dates", arrayContains: BookingModel.getDateAsString(_time)) // its just for my case.
          .snapshots(includeMetadataChanges: true)
          .listen((res) {
            List<BookingModel> newb = res.docs.map((e) => BookingModel.fromSnapshot(e)).toList(); // converting to model.
            for (final b in newb) bookings.removeWhere((e) => b.id == e.id); // deleting old and duplicate data.
            bookings.addAll(newb); // adding to bookings
          });
      streams.add(_subscription); // adding subs to streams list so we can remove every subs at onClose.
      bookingsAvailableFor.add(BookingModel.getDateAsString(_time)); // adding date for prevent duplicating streams.
    } on FirebaseException catch (e) {
      print(e.message);
      return;
    } on Exception catch (e) {
      print(e);
    }
  }


  void onClose() {
    for (final stream in streams) stream.cancel();
    super.onClose();
  }

// closing every single stream.

NOTE: bookingsAvailableFor was just for my case, it depends on your use-case.

this function gets called at OnInit with today's date, and when the user changes the current date.

just wrap your widget with OBX then you are good to go.

let me know if I did something wrong or you have some suggestions.