rails 4：向选择标记添加类

Question

尝试将类添加到选择标记

<%= f.select(:ptype, options_for_select(TourParticipation::PTYPES, selected: "traveler", disabled: "Role:") , { :class => "widens" } ) %>

结果

<select name="tour_participation[ptype]" id="tour_participation_ptype"></select>

为什么班级没有应用于我的选择标签？

Answer 1

您忘记了html_options之前options哈希。试试这个：

<%= f.select(:ptype, options_for_select(TourParticipation::PTYPES, selected: "traveler", disabled: "Role:") , {}, { :class => "widens" } ) %>

参见定义： http://api.rubyonrails.org/classes/ActionView/Helpers/FormOptionsHelper.html#method-i-select