Scala函数需要Symbol / Any instate Array / Sequence

Question

我应该为scala函数参数使用函数。该函数如下所示：

def apply(field: Field, options: Seq[(String, String)], args: (Symbol, Any)*)(implicit handler: FieldConstructor, lang: Lang): Html 

args param采用如下数组：

'_label -> "mylabel", '_showConstraints -> false, 'class -> "form-control"

在播放框架中，它看起来像这样：

@helper.select(myForm("fieldName"), options = options(MyObject.options), '_label -> "mylabel", '_showConstraints -> false, 'class -> "form-control")

如何正确编写将项添加到数组的方法？像这样：

@helper.select(callForm("callee"), options = options(LineDimension.options), args('_label -> "mylabel", '_showConstraints -> false, 'class -> "form-control"))

功能：

@args(args: (Symbol, Any)*) = @{
    if (!filterEnabled) {
        args.add('disabled -> "disabled")
    }
    args
}

来自播放控制台的错误消息是：

... type mismatch;
[error]  found   : Seq[(Symbol, Any)]
[error]  required: (Symbol, Any)
[error]             @helper.select(callForm("callee"), options = options(LineDimension.options), args('_label -> Messages.get("call.callee.choose"), '_showConstraints -> false, 'class -> "form-control"))

Answer 1

使用args(...): _*

@helper.select(callForm("callee"), options = options(LineDimension.options), args('_label -> Messages.get("call.callee.choose"), '_showConstraints -> false, 'class -> "form-control"): _*)

修改：

@args(args: (Symbol, Any)*) = @{
  if (!filterEnabled) {
    args :+ ('disabled -> "disabled")
  } else args
}

然后像我上面提到的那样使用。