scala – 如何在View中创建只读字段

在视图创建中,我使用@ leaveform.value.get.empno来显示就绪并正常工作.问题只发生在插入错误期间([NoSuchElementException：None.get]).

问题：

>问题是返回错误没有value属性.还有什么可以用来获得价值？
>我可以跳过@inputText的只读字段吗？

请参阅下面的代码：

// ***** CONTROLLER *****//

val leaveform = Form[LeaveModel](
      mapping(
          "empno" -> nonEmptyText,"name" -> nonEmptyText
      )((no,empno) => LeaveModel(empno,name))
      ((leave: LeaveModel) => Some(leave.empno,leave.name))
)

def create = withAuth { username => implicit request =>

  // Define default values
  val empno = "STUDENT"
  val name = ""

  // Set default values
  val filledForm = leaveform.fill(LeaveModel(empno,name))
  Ok(html.leave.form(filledForm))
}

def insert = Action (
    implicit request => {
        leaveform.bindFromRequest.fold(
            error => {
                BadRequest(html.leave.form(error)) // Question 1. Here is the error.
            },leave => {
               LeaveModel.insert(leave)
               Redirect(routes.indexController.index())
            }
        )  
      }
  )

// ***** VIEW START***** //
@(leaveform: Form[LeaveModel])
@leaveform.value.get.empno
@helper.form(
    action = (routes.LeaveController.update(oid)),'id -> "leaveform") {
            @inputText(leaveform("empno")) // Question 2. 
            @inputText(leaveform("name"))
        }