How to turn json to case class when case class has only one field

Question

In play 2.1 reads are used to marshall Json to objects. But how can I do this when the case class has only one field. The ideom that works for more fields does not work, as

Answer 1

Even simpler solution than the accepted one:

case class A(value: String)
val reads = (__ \ "key").read[String].map(A.apply)