Mapping result example.

[Fernando]

Hi, could you provide me an example of mapping result from Fauna database in Scala, thanks!

val result2 = client.query(
    Paginate(Ref("databases"))
  ).map{
    res => println(res.to[String])
  }
  .recover {
   case NonFatal(t) => println(s"paginate database: ${t.getMessage}")
  }

res

VFail(List(FieldError(Expected String; found value ObjectV(Map(data -> ArrayV(Vector(RefV(my-first-database,Some(RefV(databases,None,None)),None))))) of type faunadb.values.ObjectV.,/)))

[Eduardo V. Bruno]

Hi there,

There are a few things you can do:

• res.to[A] where A is any scala native type like String, Int, Boolean, etc.. or even: res.to[Seq[A]], res.to[Map[String, A], res.to[Option[A]] and res.to[Either[L, R]]
• You can traverse and convert: https://github.com/fauna/faunadb-jvm/blob/master/faunadb-scala/src/test/scala/faunadb/ClientSpec.scala#L134
• Or you can create a case class with a Record codec and do res.to[User], for example: https://github.com/fauna/faunadb-jvm/blob/master/faunadb-scala/src/test/scala/faunadb/CodecSpec.scala#L42.
• one more: https://github.com/retroryan/learn-fauna-scala/blob/lesson6/src/main/scala/com/fauna/learnfauna/SpellExample.scala#L243

If you had more questions, you're welcome to join: https://fauna-community.slack.com

ps: thanks @erickpintor, I borrowed your answer.

[Fernando]

👍 thanks !