How to use single FAMILY PROVIDER for multiple widgets? Using family provider without passing data?

[devnta]

Sorry for my bad English.
Assume, I have screen A include B, C and D widgets.
Widget tree:
A (parent)
--- B (child)
--- C (child)
--- D (child)
And I have a provider (with family):

final myAsyncNotifierProvider = AutoDisposeAsyncNotifierProviderFamily<
    MyAsyncNotifier, MyState, String?>(
  () {
    return MyAsyncNotifier();
  },
);

I would like initialize myAsyncNotifier in screen A.
B, C and D just need using it.
In A:

final state = ref.watch(myAsyncNotifierProvider("My Data");

My problem is how to use myAsyncNotifierProvider without passing data in B, C and D ? Because all of them just using, not need initialize.

[shanyuliang]

I have the same question.

I am currently passing the provider from A to B, C and D by constructor parameter.

[charlescyt]

An alternative would be storing the family parameter with a provider.
For example, instead of having a family provider.

@riverpod
Future<Foo> foo(FooRef ref, {required int id}) async {
  /* fetch foo with id */
  return ...
}

We could do

@riverpod
class SelectedFooId extends _$SelectedFooId {
  @override
  int build() => 1;

  void update(int id) => state = id;
}

@riverpod
Future<Foo> foo(FooRef ref) async {
  final selectedFooId = ref.watch(selectedFooIdProvider);
  /* fetch foo with id */
  return ...
}

The documentation here explained combining providers with the Ref object instead of using family providers.
https://riverpod.dev/docs/essentials/combining_requests

[bailyzheng]

This is a common situation. I want to solve it by passing provider as a parameter to child widget. But I found that AsyncNotifierProvider that with some arguments is not based AsyncNotifierProvider . I did not get the correct base class. I set the parameter type to AutoDisposeAsyncNotifierProvider is OK to AsyncNotifierProvider that without any arguments. But not work when I add some arguments to the provider. The error is

The argument type 'AssetListProvider' can't be assigned to the parameter type 'AutoDisposeAsyncNotifierProviderFamily<AutoDisposeFamilyAsyncNotifier<dynamic, dynamic>, dynamic, dynamic>'.

@rrousselGit Any suggestions for us?