Modify data in FutureProvider

[buraktabn]

I could just use StateNotifier but if I could edit the data in FutureProvider like StateProvider, that would clear some boilerplate and it would make my life easy at least.

Use Case

Let's say we have a FutureProvider that fetches comments of a post. When a user adds a new comment to the post, that'd be easier to add the new comment to the list in FutureProvider.

RiverPod could have something like FutureStateProvider that combines both FutureProvider and StateProvider.

final myProvider = FutureStateProvider<List<Comment>>((ref) => fetchComments());
...
ref.read(myProvider).state = [...ref.read(myProvider).data?.value ?? [], myNewComment];

[andreadaoud]

+1 on this issue. Another use case would be a settings page for a remote device, where you mainly load settings from remote device, but when the user change settings, you want to "force" some value to be the changed settings, instead of loading them again (loading again introduces delay). I think we should be able to change the "cached" value inside FutureProvider.

@rrousselGit Would you please give some comments on this topic?

[rrousselGit]

That's part of the new notifier api.

[andreadaoud]

That's part of the new notifier api.

Thank you very much for your answer! Could you please give a link to the documentation or example on this feature?

[andreadaoud]

Did you mean that we should use StateNotifierProvider? We definitely can, but this would make it impossible to use ref.invalidate, which is sometimes very inconvenient.

[rrousselGit]

Not StateNotifierProvider. The new AsyncNotifier instead
It's the fusion between FutureProvider and StateNotifierProvider basically. But you'll see more about it when it's available.

[roubachof]

wonderful! I was going to ask the exact same question : )
For now I have created a FutureStateNotifier handling all loading state has well as the result.
AsyncNotifier looks great :)