Typed routing

build.sbt

import play.sbt.routes.RoutesKeys
...
RoutesKeys.routesImport += "model.SellId"

routes.conf

...
PUT        /partner-experience/dealers/:sellId                     @controllers.DealerController.update(sellId: SellId)

PUT        /partner-experience/dealers/:sellId/makes               @controllers.DealerController.setMakes(sellId: SellId)
...

SellId.scala

package model

import algebra.DeleteDealerErrors.SellIdError
import cats.MonadError
import play.api.libs.json._
import play.api.mvc.PathBindable
import scala.util.Try

final case class SellId(value: String)

object SellId {
  def fromString(s: String): Option[SellId] = Try(s.toLong).toOption.map(_ => SellId(s))
  
  ...
  
  implicit def pathBindable[T](implicit pb: PathBindable[String]) = new PathBindable[SellId] {
    override def bind(key: String, value: String): Either[String, SellId] = {
      val err = Left("Unable to bind a seller Id")
      pb.bind(key, value) match {
        case Right(id) => fromString(id).map(Right(_)).getOrElse(err)
        case _         => err
      }
    }

    override def unbind(key: String, id: SellId): String = id.value.toString
  }
}