pkg:json - Support for enums

[pattobrien]

The following code snippet throws an error for enums.

@JsonCodable()
class Foo {
  final MyEnum myEnum;
  //    ^^^^^^ ERROR: Only classes are supported as field types for serializable classes dart(macro_error)
}

enum MyEnum { a }

I realize that EnumDeclarations are generally not yet supported by macros, but since this is basic functionality preventing any future migration, that this would be beneficial to document.

info

- Dart 3.5.0-159.0.dev (dev) (Wed May 15 13:03:12 2024 -0700) on "macos_arm64"
- on macos / Version 14.4.1 (Build 23E224)
- locale is en-US

[FarisArmoush]

@JsonCodable annotation already supports enums, but you have to make one extra step for it to work, which is adding @JsonValue annotation for each value in the enum.

enum Status {
  @JsonValue('active')
  active,
  @JsonValue('inactive')
  inactive,
  @JsonValue('pending')
  pending,
}

[1l0]

@JsonCodable annotation already supports enums, but you have to make one extra step for it to work, which is adding @JsonValue annotation for each value in the enum.

enum Status {
  @JsonValue('active')
  active,
  @JsonValue('inactive')
  inactive,
  @JsonValue('pending')
  pending,
}

It doesn't work for me. I need this too.

[hschaeufler]

Would also like to use JsonCodable() for enums. It would save a lot of work. In the json_annotation package, for example, there is also a @JsonEnum(). Does anyone know a workaround that I can use for Enums in context with JsonCodable without having to remove JsonCodable?