Creating new json from old json

[Corey Nolet]

I've got a use case where I'm projecting new json objects out of old json objects. Let's say I've got json that looks like this (this is a very oversimplified case):

val people = "{ people: [{ id: 1, name: \"Corey\"}, {id: 2, name: \"Jon\"}], ...}"

What I'd like to do is directly pull objects  of type Json out of one object and add them to another.

val json = Json.parse(people)

val newJson = JsonBuffer.parse("{}")

newJson += people.people

This could be because I'm using an old version of Rapture-json (0.9.0) but this is throwing an exception saying JSON cannot be serialized to Json. 

Obviously my usecase is much more complex than that. We're doing many many many more complex transformations from the input json to the output json but you get the gist of what Im trying to acheive.

[Corey Nolet]

Woops- typo. 

the line:

newJson += people.people 

should read:

newJson += json.people

[Jon Pretty]

Hi Corey,

Yes, that's actually an issue that was fixed in about version 1.0.2. The problem is that it doesn't have implicit serializer or extractor objects for converting between `Json` and `JsonBuffer`.

What you can do is define this ugly implicit, and it should start working:

   implicit def jsonSerializer: Jsonizer[Json] = new Jsonizer[Json] {

     def jsonize(j: Json) = j.root(0)
   }

That's a simpler version of what's defined in later versions of Rapture JSON.

Jon

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Jon Pretty | @propensive

[Corey Nolet]

I promise I'll update as soon as I can :-P