Play Framework 2 JSON Reads, deserialization of one variable -


i'm using play framework 2.4 , i'm trying basic json deserialization reads error. here code:

case class config(action: string)

and somewhere,

implicit val configreads: reads[config] = (   (__ \ "action").read[string]   )(config.apply _)

i think configreads correctly formed ide error on "read" method call (symbol not defined), when compile code following error: 

error:(30, 27) overloaded method value read 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 applied (string => wings.common.json.config)       (__ \ "action").read[string]                           ^

but, if instead of trying deserialize 1 argument declare class 2 arguments in constructor , write code deserialize it, works.

does know how solve this?

edit:

digging in depth of google found this play 2.1.x i'm using json library play 2.4.1 problem should not happening.

you can this:

implicit val configreads: reads[config] = (   (__ \ "action").read[string]   ) map config.apply

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