hi, how can I make data class with empty arrays en...

# serialization

[Adam S]

hi, how can I make data class with empty arrays encode to empty json arrays?

val jsonMapper = Json {
        prettyPrint = true
        encodeDefaults = true
        coerceInputValues = true
      }
      val inputPet = Pet(
        name = petName,
        tags = emptyList(),
        photoUrls = emptyList(),
        status = petStatus
      )
      val inputPetJson = jsonMapper.encodeToString(inputPet)

Actual :{"name":"blaaaah","status":"available"}
Expected:{"name":"blaaaah","photoUrls":[],"tags":[],"status":"available"}

I’ve tried various combinations of encodeDefaults and coerceInputValues. The problem is that Pet has other fields that default to null. I don’t want to include those.

[Dominaezzz]

Looks like a bug. File an issue.

[Adam S]

thanks, I’ve done it https://github.com/Kotlin/kotlinx.serialization/issues/1447

[Adam S]

in doing so I came up with a workaround - set the default value to null and manually set the parameter to emptyList() on creation