hi - does anyone know how to encode constants to json? eg ```data class Test(val a: String) { val ...

# serialization

[Peter]

hi - does anyone know how to encode constants to json? eg

data class Test(val a: String) {
  val b: String = "alwaysthesame"
}

i’m looking for Test("x") to be {"a": "x", "b": "alwaysthesame"}

[Peter]

looks like private constructor with all the fields and public constructor with limited fields is the only way

[Paul Griffith]

or a custom serializer

[Paul Griffith]

kotlinx-serialization is fairly opinionated, but it's pretty uncommon in serialization frameworks to encode a default value for space concerns

[Ben Woodworth]

Does this work?

data class Test(val a: String) {
  val b: String

  init {
    b = "alwaysthesame"
  }
}

I think it might not be encoding because encodeDefaults is false, and b has the default value "alwaysthesame"

[Ben Woodworth]

If it does work, you could also do this in kotlinx.serialization 1.3.0:

@EncodeDefault
val b: String = "alwaysthesame"