Share code between adapter mixins

[oarshad]

This may be a more likely dart question. If I have an ApplicationAdapter but if I make another adapter but how to reuse some logic from the above

mixin ApplicationAdapter<T extends DataModel<T>> on RemoteAdapter<T> {
  @override
  String get baseUrl => "http://localhost:8080/api/v1/";

  @override
  FutureOr<Map<String, String>> get defaultHeaders async {
    final token = await read(tokenProvider.future);
    if (token == null) {
      return await super.defaultHeaders;
    } else {
      return await super.defaultHeaders
        ..addAll({'Authorization': 'Bearer $token'});
    }
  }
}

mixin CategoryAdapter<T extends DataModel<T>> on RemoteAdapter<T> {

  @override
  String get type => "countries";

  // TODO: How to reuse the baseUrl and defaultHeaders from above, instead of re-writing it again here?

}

[frank06]

Good question. You simply need to stack adapters like:

@DataRepository([ApplicationAdapter, CategoryAdapter])
class Category with DataModel<Category> {

Adapters override behavior from left to right as this essentially translates to RemoteAdapter<Category> with ApplicationAdapter<Category>, CategoryAdapter. Try it out!