Json CustomSerializer

[Tom Peck]

Hi Guys,

I have a working controller which is happily serializing case classes to JSON.  The problem is that I have some non-case class models that I need to render as well.

I'm attempting to follow the Json4S guide here: https://github.com/json4s/json4s (specifically the serializing non-supported types), but all I get is a toString() of my model object.

Here is a snippet of my controller:

class MainServlet extends ScalatraServlet with JacksonJsonSupport {

  implicit override val jsonFormats: Formats = DefaultFormats + new TestSerializer

  get("/foo") {

    Ok(new Test(123))

  }

}

class Test(val i: Int)

class TestSerializer extends CustomSerializer[Test](format => (

  {

    case JObject(JField("i", JInt(i)) :: Nil) =>

      new Test(i.toInt)

  },

  {

    case x: Test =>

      JObject(JField("i", JInt(x.i)) :: Nil)

  }

  ))

[Ivan Porto Carrero]

if you make the request with the Accept header set to application/json or add ?format=json as query param it will come out as json

-- 

Ivan Porto Carrero

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[Tom Peck]

Apologies - I missed out this from my snippet:

  before() {

    contentType = formats("json")

  }

  I'm also setting the header for my unit tests like this, but to no avail.

  def getJson[A](url: String)(f : => A) = submit("GET", url, headers = Map("Accept" -> "application/json"))(f)

Cheers

-Tom