如何为date_select字段添加不同的CSS样式？

Question

我有输入生日的选择列表

<%= f.date_select :birthday, {include_blank: true, start_year: Time.now.year - 70} %>

我需要在date_select中添加以下css样式。我不能不明白，如何添加不同的CSS类？你能帮帮我吗？

<select class="form-control_medium" tabindex="-1" role="chzn_select" style="display: none;">
<option value="">Month</option>
<option value="1">Yanuary</option>
<option value="2">February</option>
 ....................................
</select

<div class="chosen-container chosen-container-single chosen-container-single-nosearch" style="width: 150px;" title=""><a class="chosen-single" tabindex="-1"><span>Month</span><div><b></b></div></a><div class="chosen-drop"><div class="chosen-search"><input type="text" autocomplete="off" readonly="" tabindex="3"></div><ul class="chosen-results"></ul></div></div>

Answer 1

尝试将{ class: 'form-control_medium' }添加到date_select，如下所示：

<%= f.date_select :birthday, {include_blank: true, start_year: Time.now.year - 70}, { class: 'form-control_medium' } %>

查看docs for data_select。