How to convert JValue to JObject

[antoine no]

Hello,

I would like to know how to convert a JValue to a JObject from json.JsonAST ?
val r: JObject = ("key" -> JString("value")).replace(List("key"), JString("another value") //fails

thanks you.

[Joni Freeman]

Hi,

Here it is no longer statically known that the JSON represents an object since 'replace' returns
JValue. Thus you need a runtime cast. Is it possible to modify your code so that you operate with
JValues instead of JObjects? Then no cast is needed.

Cheers Joni

[Maciej Bąk]

You can do this way:

jval match {
  case j @ JObject(jobj) => // do smth
  case _ => // err
}

this works fine.