Which makes you puke less?

  def fullText(doi: String) = Action.async {
    val encodedDoi = URLEncoder.encode(doi, "UTF-8")
    val output = contentService.fullText(encodedDoi).map(_.right.flatMap(renderer.render))
    output.map(_.fold(errorResponse, okResponse))
  }

  def fullText2(doi: String) = Action.async{

    type ApiResponseToRenderResult = PartialFunction[Try[Either[Err, String]], Either[Err, String]]
    def getContent = contentService.fullText(URLEncoder.encode(doi, "UTF-8"))
    def renderIt: ApiResponseToRenderResult = {case Success(Right(xml)) => renderer.render(xml)}
    def resultToResponse: Either[Err, String] => Result = _.fold(errorResponse, okResponse)

    getContent andThen renderIt map resultToResponse

  }