I'm struggling to register a custom Gson configuration with my app. It looks as if, when using

body.auto

my Gson config is not used:

val auto: CustomerCreateModel = Body.auto<CustomerCreateModel>().toLens().extract(it)
        val manual: CustomerCreateModel = MyGson.mapper.fromJson(it.bodyString(), CustomerCreateModel::class.java)
        assert(auto == manual) //fails

I have the following on my classpath:

object MyGson : ConfigurableGson(
    GsonBuilder()
        .registerTypeAdapter(Country::class.java, CountryDeserializer())
        .registerTypeAdapter(Country::class.java, CountrySerializer())
        .setDateFormat("yyyy MM-dd'T'HH:mm:ss.SSS'Z'")
        .asConfigurable()
        .withStandardMappings()
        .done()
)

I'm on a fairly old version of http4k (3.261.0), btw

you're probably importing the wrong auto method when referencing the

Body.auto

. If you've got

import org.http4k.format.Gson.auto

in your file then it's the wrong one. you need to import your method instead

Ah! How subtle! Thanks that was it

yeah, it's a bit of an annoyance - the auto import in Idea doesn't pick up the extension method (there is a bug currently open). Suggest creating a function in the meantime which delegates to the correct import and just use that one instead 🙂

Good idea thanks!