Hi, what's the best practice for returning an arbitrary Map object as a JSON Response? No validation, as the keys will vary often. The 3 examples at https://www.http4k.org/guide/modules/json/ all describe objects specifically created to be JSON, not a normal Map (or list of Pairs). And can http4k automatically set the Response's content type to

application/json

? Perhaps an equivalent of Flask's

jsonify

(https://flask.palletsprojects.com/en/1.1.x/api/#flask.json.jsonify). Thanks.

these both work depending on if you want to use lenses or not:

fun main() {
    val m = mapOf("too" to "bwob")
    println(Request(Method.GET, "").with(Body.auto<Map<String, Any>>().toLens() of m))
    println(Jackson.asJsonObject(m))
}

great, thanks, I was using the 2nd option, wasn't sure if that was considered best practice. Am I correct that only Jackson has

asJsonObject

, not Kotlinx or Moshi? And setting

application/json

must be done manually?

anything that actually has a Json object API model will have that method. Moshi for example doesn't although it does the marshalling. Check out

Json

vs

AutoMarshallingJson

vs

JsonLibAutoMarshallingJson

I don't mind setting Content-Type -- just want to be sure I am using Http4k efficiently

My default is just to use Jackson with an auto lens.

good to know, I started using moshi but had converted almost all my serialization to kotlinx

of course! 🙂