If StateProvider is deprecated in the future, why shouldn't NotifierProvider be able to manipulate state?

[Eiryyy]

I recently started using Riverpod. I generated a NotifierProvider with riverpod_generator, but was surprised that I could not touch the state.

@riverpod
class Email extends _$Email {
  @override
  String build() => '';
}

ref.read(emailProvider.notifier).state = someString;

Just to the point, the code above will produce the warning below in state.

The member 'state' can only be used within 'package:riverpod/src/notifier.dart' or a test.dart[invalid_use_of_visible_for_testing_member](https://dart.dev/diagnostics/invalid_use_of_visible_for_testing_member)

I know StateProvider will not produce such a warning. But if StateProvider is to be deprecated in the future, shouldn't NotifierProvider also be able to manipulate state directly?

If I want to cover all providers with code generation, would the workaround be as follows?

@riverpod
class Email extends _$Email {
  @override
  String build() => '';

  @override
  set state(String value) {
    state = value;
  }
}

[armanafat]

well you can achive your goal easily and riverpod provides you the tool but you need to do it in right way .
if you want to access your state of class and change it , as the error suggest you , you need to create function inside of your class and change your state throw that by calling update() method which is available inside your class you can update your state :

@riverpod
class Email extends _$Email {

@OverRide
String build() => '';

void changeMyState (String newState){

  update((currentState) => currentState= newState);

}
}

and then in your build method all you need to do is to invoke this function : \

()=>ref.read(emailProvider.notifier).changeMyState();

I assume you are familiar with riverpod_generator and build_runner packages and already created .g.dart file . if not you need to go and read about it .

[Purus]

The update method does not seem to exist..

[gdurandrexel]

you don't need update(), just state = newState.