I’ve tried asking this question to ChatGPT and CopilotBing, but I want to know more clearly from someone more experienced.

Case 1

If I have a controller class ‘HomeController’ like this:

class HomeController {
final currentUserId = AuthService.to.user!.uid;
}

and I have a method in that class named ‘createTask’, and I call the ‘createTask’ method from the UI code ‘home_view.dart’.

However, ‘createTask’ requires the ‘currentUserId’ data.

The question is, should I call ‘createTask like this in ‘home_view.dart’:

controller.createTask(controller.currentUserId)

or just like this:

controller.createTask()

and the ‘currentUserId’ parameter is obtained like this:

class HomeController {
final currentUserId = AuthService.to.user!.uid;

void createTask(){
print(currentUserId);
}
}

Case 2

I have a controller class ‘SearchUserController’ like this:

class SearchUserController extends GetxController {
  final search = ''.obs;
final displayName = 'testing';
}

and I have a method in that class named ‘_searchUser’.

I call the method using ‘onInit’ from ‘SearchUserController’ and listen for changes every time the search variable changes using debounce.

The question is, is it better to call the ‘_searchUser’ method like this:

@override
  void onInit() {
debounce(
      search,
      (receiverName) => _searchUser(displayName, receiverName),
    );
super.onInit();
  }

or just like this:

@override
  void onInit() {
debounce(
      search,
      (_) => _searchUser(),
    );
super.onInit();
  }

and the ‘_searchUser’ method is like this:

void _searchUser() {
print(displayName);
    print(search.value);
}

Case 3

I have a class ‘AuthService’ like this:

class AuthService extends GetxService {
  late Rx<User?> _user;
  User? get user => _user.value;
}

then I want to assign the ‘_user’ variable like this:

@override
  void onInit() {
    _user = Rx<User?>(FirebaseAuth.instance.currentUser);
    _user.bindStream(FirebaseAuth.instance.userChanges());
    super.onInit();
  }

and then I want to check the ‘_user’ variable every time it changes using ‘ever’.

The question is, what is the best way to write the code in ‘onInit’?

Case 1: How to correctly retrieve a variable within a method if it already exists within the class itself.

Case 2 and 3: How to correctly use Workers in GetX.