Data Builder for TDD Clean Code Architecture

We always generate dto and service files while using TDD architecture. This package aids you to generate this files

Usage/Examples

This package uses retrofit and dio for api usage.

Create DTO file

dart run tdd_data_builder dto <DTO-NAME>

Replace to the name of your DTO.

You may create entity for your DTO by adding --entity

dart run tdd_data_builder dto <DTO-NAME> --entity

Create Service file

dart run tdd_data_builder service <SERVICE-NAME>

Replace to the name of your service.

Create DataResponse class file

Many back-end services returns response inside data property of their JSON file as follow:

{
    "data" : {
        ...
    }
}

We created a special DataResponse class to extract the data from the this JSON. It means you don't need to create class which holds data property every time. Run this code:

dart run tdd_data_builder data-response

It generates the file in the following path: lib/data/dto/default/default_response.dart

If there is a need to add a new route from api which contains data, you just register your dto class inside data-response. That's it.

part 'data_response.g.dart';

@JsonSerializable()
class DataResponse<T> {
  @JsonKey(name: "data")
  @_Converter()
  final List<T> data;

  const DataResponse({
    required this.data,
  });

  factory DataResponse.fromJson(Map<String, dynamic> json) =>
      _\$DataResponseFromJson<T>(json);

  Map<String, dynamic> toJson() => _\$DataResponseToJson(this);
}

class _Converter<T> implements JsonConverter<T, Object?> {
  const _Converter();

  @override
  T fromJson(Object? json) {
    if (json is Map<String, dynamic>) {
      switch (T) {
        //case SampleDto:
          //return SampleDto.fromJson(json) as T;
      }
      return DefaultResponse<T>.fromJson(json) as T;
    }
    return json as T;
  }

  @override
  Object? toJson(T object) => object;
}

Here commented SampleDTO is your DTO which comes as a value of data property in JSON.

⚠ MUST do everytime

When you create a dto or service file, it just generate the template. You fill your class with necessary attributes and methods as your needs. After all, you must run build_runner package to generate the part files.

flutter pub run build_runner build

🔗 Links