CODEWITHSUNDEEP
flutterdartriverpod
Sascha Derungs
Sascha Derungs

Reputation: 171

Clear state in providers when using Flutter and Riverpod

How can I clear the current state of my Riverpod providers manually in my Flutter app? The use case I have is when a user signs out of my app then signs up as a new/different user the previous users state is still stored in the providers, it is cleared automatically when the app is restarted however.

Upvotes: 10

Views: 17955

Answers (4)

Waad Sulaiman
Waad Sulaiman

Reputation: 21

If you are using the same ProviderContainer for all your providers. An easy way around it would be to call

void logout() {
  var providers = ref.container.getAllProviderElements();
  for (var element in providers) {
    element.invalidateSelf();
  }
}

Upvotes: 0

Code on the Rocks
Code on the Rocks

Reputation: 17576

2022

There is now an invalidate() method that causes the provider to be disposed immediately.

Example usage:

onPressed: () async {
                          ref.read(newPostScreenProvider.notifier).setBusy(true);
await ref.read(newPostScreenProvider.notifier).submitPost(
          image: ref.watch(imagesProvider),
          content: ref.watch(contentProvider),
          private: private,
        );
                          
    ref.read(newPostScreenProvider.notifier).setBusy(false);
    ref.invalidate(newPostScreenProvider);
    ref.invalidate(imagesProvider);
    ref.invalidate(contentProvider);
    ref.invalidate(contentReadyProvider);
    router.pop();
}

Here's a GitHub issue describing the invalidate method.

Upvotes: 15

Sascha Derungs
Sascha Derungs

Reputation: 171

For reference, my question was answered by the owner of the Riverpod package here: https://github.com/rrousselGit/river_pod/issues/676

Upvotes: 7

Tolga Kartal
Tolga Kartal

Reputation: 633

You will need to use .autoDispose from Riverpod, see below link for more details

final userProvider = StreamProvider.autoDispose<YourModel>((ref) {

});

https://riverpod.dev/docs/concepts/modifiers/auto_dispose/

Upvotes: 2

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