Flutter freezed - what is @JsonValue for

Question

I see you can do, for example

factory User({
  @JsonKey(name: 'home_address') String? homeAddress,
  @JsonKey(name: 'first_name') String firstName,
})

and the keys home_address and first_name from a json will be the properties homeAddress and firstName respectively.

But what is @JsonValue used for then?

Could you maybe provide an example code snippet including your question regarding @JsonValue? — yezper, May 23 '23 at 12:09
I don't have an example because I don't know what it is used for, but it does exist. — user3808307, May 24 '23 at 04:01

score 1 · Accepted Answer · answered May 24 '23 at 12:48

1

It is used to serialize/deserialize an enum instance, as stated in the documentation.

For an example see here.

answered May 24 '23 at 12:48

yezper

So JsonKey to deserialize a class and JsonValue for enums? why are they different – user3808307 May 25 '23 at 13:25
1

You put JsonKey on a field, whereas you put JsonValue on an enum value to specify how that particular enum value should be serialized to/deserialized from – yezper May 25 '23 at 14:26

1 Answers1