I'm using Play Framework 2.4 and I'm trying to do a basic JSON deserialization with Reads but I get an error. Here is the code:
case class Config(action: String)
and somewhere,
implicit val configReads: Reads[Config] = (
(__ \ "action").read[String]
)(Config.apply _)
I think the configReads is correctly formed but I get an IDE error on the "read" method call (symbol not defined), when I compile the code I get the following error:
Error:(30, 27) overloaded method value read with alternatives:
(t: String)play.api.libs.json.Reads[String] <and>
(implicit r: play.api.libs.json.Reads[String])play.api.libs.json.Reads[String]
cannot be applied to (String => wings.common.json.Config)
(__ \ "action").read[String]
^
but, if instead of trying to deserialize ONE argument I declare a class with TWO arguments in the constructor and I write the code to deserialize it, it works.
Does anybody know how to solve this?
Edit:
Digging in the depth of Google I found this for Play 2.1.x but I'm using the Json library for Play 2.4.1 so this problem should not be happening.
You can do like this:
implicit val configReads: Reads[Config] = (
(__ \ "action").read[String]
) map Config.apply
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