Play2-Auth and Slick together

Play2SlickBridge.scala

//Trait that bridges between slick and Play2-auth. Just mixin with controllers
trait Auth2SlickBridge {
  self: StackableController =>

  def AuthAction[A](p: BodyParser[A], params: (RequestAttributeKey[_], Any)*)(f: RequestWithAttributes[A] => Action[A]): Action[A] = {
    AsyncStack(p, params:_*) { implicit rs =>
      f(rs).apply(rs)
    }
  }

  def AuthAction(params: (RequestAttributeKey[_], Any)*)(f: RequestWithAttributes[AnyContent] => Action[AnyContent]): Action[AnyContent] = {
    AsyncStack(params:_*) { implicit rs =>
      f(rs).apply(rs)
    }
  }
}


//exmaple usage
object Message extends Controller with AuthElement with Auth2SlickBridge with AuthConfigImpl {

  def main = AuthAction(AuthorityKey -> "user") { implicit play2AuthRequest =>
    DBAction { implicit slickRequest =>
      Computers.findById(1L).map { computer =>
        Ok(html.editForm(1L, Application.computerForm.fill(computer), Companies.options))
      }.getOrElse(NotFound)
    }
  }
}

This is the code that completes yours actions. It is adjusted to my code, I send Json as result

def getUser(idUser: Int) = AuthAction(AuthorityKey -> NormalUser) { implicit rs =>
    Action.async { implicit slickRequest =>
      dao.findById(idUser).map{ user =>
        Ok(Json.toJson(user))
      }
    }
  }
}