Support custom DateTime formats about json_serializable.dart HOT 8 CLOSED

@JsonSerializable()
class Test extends Object with _$TestSerializerMixin {

  @JsonKey(fromJson: _fromJson, toJson: _toJson)
  final DateTime date;

  Test({
    this.date,
  });

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

final _dateFormatter = new DateFormat('M/d/yyyy');
DateTime _fromJson(String date) => _dateFormatter.parse(date);
String _toJson(DateTime date) => _dateFormatter.format(date);

@JsonSerializable()
class TestItem {
  @JsonKey(fromJson: DateTimeHelper.toIso8601Json, toJson: DateTimeHelper.toIso8601Json)
  String createTime;

  TestItem(this.createTime);

  factory TestItem.fromJson(Map<String, dynamic> json) => _$TestItemFromJson(json);

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

extension DateTimeHelper on DateTime {
  static DateTime fromIso8601Json(String json) => DateTime.parse(json);

  static String toIso8601Json(DateTime date) => date.toIso8601String();
}