Scala Play:如何呈现具有重复和嵌套值的表单映射？

case class User(name: String, age: Int, addresses: Seq[Address])
case class Address(street: String, city: String)

val userForm = Form(
  mapping(
    "name" -> nonEmptyText,
    "age" -> number,
    "addresses" -> seq(
      mapping(
        "street" -> nonEmptyText,
        "city" -> nonEmptyText
      )(Address.apply)(Address.unapply)
    )
  )(User.apply)(User.unapply)
)

@helper.form(action = routes.Application.submitForm()) {
  @helper.repeat(userForm("addresses")) { addressForm =>
    @helper.inputText(addressForm("street"))
    @helper.inputText(addressForm("city"))
  }
  @helper.inputText(userForm("name"))
  @helper.inputText(userForm("age"))
  <input type="submit" value="Submit">
}

def submitForm = Action { implicit request =>
  userForm.bindFromRequest.fold(
    formWithErrors => {
      // 处理表单验证失败的情况
      BadRequest(views.html.form(formWithErrors))
    },
    userData => {
      // 处理表单验证成功的情况
      // 可以将表单数据保存到数据库或执行其他操作
      Ok(views.html.success(userData))
    }
  )
}