Talaria
Clean architecture

Presentation

A Riverpod notifier calls the use case. The note tile does not import Riverpod. Beamer reports the screen.

clean-architectureflutter

The page and the notifier live in presentation/features/notes/. The tile lives in ui/note_tile.dart. That split is the point of this track: a feature owns its screen, and a presentational widget owns nothing about Riverpod.

NotesPage watches notesProvider and calls save on the notifier. NoteTile takes a title and a body. The tile file imports Flutter only.

Beamer is the router adapter. presentation/router/notes_location.dart builds the notes page inside ScreenReporter, which calls NotesMonitoring.setScreen when the location is shown. Repeats of the same path and title are dropped once a client exists.

dart
Future<String?> save(String title, String body) async {
  try {
    await ref.read(saveNoteUseCaseProvider).execute(title: title, body: body);
    final notes = await ref.read(listNotesUseCaseProvider).execute();
    state = AsyncData(notes);
    return null;
  } on ValidationFailure catch (error) {
    return error.message;
  }
}

null means the list state was replaced and the page clears the fields. A string means the form shows that message and the list stays as it was. A blank title never reaches the store.

Next: Composition root.