Not clear how to apply custom json serializable converter

[SandroMaglione]

I am trying to apply my custom json converter. The README states that it is possible to add a custom json serializable converter to a model created with freezed, but it does not seem to provide an example on how to actually apply it to a model.

I tried different strategies, but all seem unsuccessful.

// 1. Outside the model

@freezed
@ModelConverter()
abstract class Model with _$Model {
  const factory Model({
    String name,
    String surname,
  }) = _Model;

  factory Model.fromJson(Map<String, dynamic> json) => _$ModelFromJson(json);
}

// 2. On the factory constructor

@freezed
abstract class Model with _$Model {
  @ModelConverter()
  const factory Model({
    String name,
    String surname,
  }) = _Model;

  factory Model.fromJson(Map<String, dynamic> json) => _$ModelFromJson(json);
}

// 3. On the factory fromJson method

@freezed
abstract class Model with _$Model {
  const factory Model({
    String name,
    String surname,
  }) = _Model;

  @ModelConverter()
  factory Model.fromJson(Map<String, dynamic> json) => _$ModelFromJson(json);
}

As stated, none of this solutions seem to work.

How can I apply my custom converter such that toJson and fromJson generated with json_serializable utilize my custom converter?

[rrousselGit]

The decorator isn't placed on the Model class, but the places where Model is used:

@freezed
abstract class Another with _$Another {
  const factory Another({
    @ModelConverter Model model,
  }) = _Another;

  factory Anotherl.fromJson(Map<String, dynamic> json) => _$AnotherFromJson(json);
}

[SandroMaglione]

I see, now it works. Thanks.

I was having doubts because the Model inside Another class was contained in a List, so I thought it would not work.

@freezed
abstract class Another with _$Another {
  const factory Another({
    // Adding the decorator with a list works as well!
    @ModelConverter List<Model> modelList,
  }) = _Another;

  factory Another.fromJson(Map<String, dynamic> json) => _$AnotherFromJson(json);
}

Do you think it would be useful to add this example to the docs (both for the plain Model and List examples)? Should I open a PR?

[rrousselGit]

Sure, feel free to make a PR