Question

我正在编写像这样选择的选项。它没有给出任何错误，但类属性不会出现在生成的html中。

<%= f.select(:late_penalty, options_for_select([["Days in Week", "Days in Week"],
                                            ["Days in Month", "Days in Month"]], :selected => @late_early.late_penalty) , { :class => 'my_style_class' })%>

Answer 1

试试这个会起作用

 <%= f.select(:late_penalty,
 options_for_select([
                    ["Days in Week", "Days in Week"],
                    ["Days in Month", "Days in Month"]],
                    :selected => @late_early.late_penalty),
                    { } , { :class => 'my_style_class' })%>

Answer 2

问题是必须将HTML属性作为第四个参数传递给select，但是您将它们作为第三个参数提供。（第三个参数适用于:include_blank等选项。）这是你想要的：

<%= f.select(:late_penalty, 
      options_for_select(
        [ [ "Days in Week", "Days in Week" ],
          [ "Days in Month", "Days in Month" ]
        ],
        :selected => @late_early.late_penalty
      ),
      nil,
      { :class => 'my_style_class' }
    )
%>

如何在rails 4中为select标签的选项添加class属性？

2 个答案: