Rails +简单表单单选按钮全局配置

Question

使用Rails 4.2和Simple Form gem我有一些单选按钮：

<%= f.input :frequency, as: :radio_buttons,
            collection: NewsletterPreference.frequencies.keys,
            item_label_class: 'radio-inline',
            label_method: lambda { |item| " #{item.capitalize} " },
            input_html: {autocomplete: 'off', class: "icheck"} %>

是否可以在初始化文件中提取item_label_class，label_method，input_html？

将来我只会输入：

<%= f.input :frequency, as: :radio_buttons,
            collection: NewsletterPreference.frequencies.keys %>