play binder for BigDecimal

binderBigDecimal.scala

// in buid.sbt """routesImport ++= Seq("com.nachinius.controllers.Binders._" """

package com.nachinius.controllers
object Binders {
implicit def BigDecimalQueryStringBindable = new QueryStringBindable[BigDecimal] {
    override def bind(key: String, params: Map[String, Seq[String]]): Option[Either[String, BigDecimal]] = {
      params.get(key).flatMap(_.headOption).map { value =>
        Try { BigDecimal(value) } match {
          case Success(value) => Right(value)
          case Failure(exception) => Left(exception.getMessage)
        }
      }
    }

    override def unbind(key: String, value: BigDecimal): String = {
      s"%key=${value.bigDecimal.stripTrailingZeros.toPlainString}"
    }
  }
}