gistfile1.scala

def bid(xhtml: NodeSeq): NodeSeq = {
  if(!Customer.loggedIn_?){
    S.warning("You must be logged in to bid on auctions.")
      NodeSeq.Empty
  }
  else {
    var amountBox: Box[String] = Empty

    def submit = {
      for(ass <- amountBox ?~ "Amount not entered";
          amo <- tryo(BigDecimal(ass).doubleValue) ?~! "Amount not a number";
          auc <- auction;
          vld <- tryo(amo).filter(_ >= auc.nextAmount) ?~ "Less that required amount!"
        ) yield {
          new Bid().auction(auction).customer(Customer.currentUser).amount(amo).save
        }
      } match {
        case Full(x) => 
          S.notice("Great, your bid was accepted!")
        case Failure(msg, _, _) => 
          S.error(msg)
        case _ => 
          S.warning("Unable to place bid at this time.") 
      }
  
      SHtml.ajaxForm(bind("b",xhtml,
        "amount" -%> SHtml.text(amountBox.openOr(""), s => amountBox = Full(s)) % ("id" -> "amount"),
        "submit" -> SHtml.ajaxSubmit("Place Bid", () => { submit; Noop })
      ))
  }
}