Write flow stays explicit.
Define mutations as provider methods, monitor state with MutationToken, and execute through ref.invoke(call).
Mutation Building Blocks
A mutation is a Call<R, State> returned from mutate(token, body, concurrency: ...).
Token
late final renameMut = mutation<void>(#rename)
Execution
await ref.invoke(provider.rename(...))
State
Idle / Pending / Success / Error via ref.watch(token)
შენიშვნა
Unlike notifier.method() style APIs, miniriverpod makes mutation execution a first-class call object.
Execute a mutation
Use ref.invoke so cancellation and drop behaviors are surfaced to the caller.
სიგრძე (Run)
await ref.invoke(userProvider.rename('Alice'));
Concurrency options
concurrent : run all calls in parallel (default).
queue : FIFO; keep running queued calls even after an error.
restart : cancel previous run, keep only latest call.
dropLatest : drop incoming calls while one is running.
Example: optimistic update + restart
A common write pattern updates AsyncData optimistically, then syncs with server response.
user_provider.dart
class UserProvider extends AsyncProvider<User?> {
UserProvider() : super.args(null);
late final renameMut = mutation<void>(#rename);
Call<void, AsyncValue<User?>> rename(String newName) => mutate(
renameMut,
(ref) async {
final cur = ref.watch(this).valueOrNull;
ref.state = AsyncData((cur ?? const User()).copyWith(name: newName), isRefreshing: true);
final api = ref.watch(apiProvider);
await api.rename(newName);
ref.state = AsyncData(await api.me());
},
concurrency: Concurrency.restart,
);
}
restart may throw CancelledMutation to older callers.
dropLatest may throw DroppedMutation while busy.
Catch these in UI when you want to suppress transient cancellation errors.
შემდეგი ნაბიჯები
Provider-ების კითხვა
Bind mutation state to UI using ConsumerWidget or ConsumerStatefulWidget.
Open Flutter API