Hey guys, I am working with an API that either ret...

# serialization

[Ashley Figueira]

Hey guys, I am working with an API that either returns a success response or an error response (both HTTP 200). They are 2 different JSON. How would I deserialize this using Kotlinx Serialization and Ktor? Would like to deserialize this into a sealed class like so:

sealed class ApiResponse {
    data class Success(val fields: String) : ApiResponse()
    data class Error(val errorCode: String, val errorMessage: String): ApiResponse()
}

Is there any tutorial on how to do something like this?

[Javier]

Search for polymorphism serialization in the serialization docs

[Nikky]

do they have something like a type field for success or error ? maybe you can get away with a sealed class..

or just decode into a JsonElement and decide which serializer to use in a when

you can try a JsonTransformingSerializer to preprocess the json

[Ashley Figueira]

Dont think polymorphism would work since it doesn’t have any common field. Its completely different JSON response.

[Javier]

Not sure, he can try by using that sealed class directly, marking it as serializable