I have a class ```@kotlinx.serialization.Serializa...

# serialization

[Brent Beardsley]

I have a class

@kotlinx.serialization.Serializable
data class Geolocation(
    val latitude: Double,
    val longitude: Double
)

that I'm using to get responses from rest calls. Unfortunately the rest api is not consistent and so in some places I need to use lat and lng instead of latitude and longitude. What is the best way to handle this? A custom serializer or extend the class and add @SerialName if that's possible? I'd like to really just have one Geolocation so I'm leaning towards the custom serializer...

[ephemient]

@Serializable
data class AbbreviatedGeolocation(
    val lat: Double,
    val lng: Double
)

object AbbreviatedGeolocationSerializer : KSerializer<Geolocation> {
    override val descriptor: SerialDescriptor = SerialDescriptor("f.q.d.n.Geolocation", AbbreviatedGeolocation.serializer().descriptor)

    override fun serialize(encoder: Encoder, value: Geolocation) {
        encoder.encodeSerializableValue(AbbreviatedGeolocation.serializer(), AbbreviatedGeolocation(value.latitude, value.longitude))
    }

    override fun deserialize(decoder: Decoder): Geolocation {
        val value = decoder.decodeSerializableValue(AbbreviatedGeolocation.serializer())
        return Geolocation(value.lat, value.lng)
    }
}

and mark specific use-sites with @Serializable(with = AbbreviatedGeolocationSerializer::class) as necessary

[Landry Norris]

If you’re only getting responses, I believe the SerialName annotation will match either name, which should be less work than a custom serializer.

[ephemient]

no, it only matches one name. there is @JsonNames which can match multiple, but is JSON-specific