Rails：更改由fields_for生成的div类

Question

Rails将fields_for（嵌套属性）生成的表单输入始终封装为<div class="fields">...</div>。我需要将课程更改为“col-md-4”或至少添加到它。我将如何做到这一点？

<%= form.fields_for :products_colors do |pc| %> 
    <%= render 'products_color', :pc => pc %> 
<% end %> 

Answer 1

的文档：

http://api.rubyonrails.org/classes/ActionView/Helpers/FormHelper.html#method-i-fields_for

fields_for(record_name, record_object = nil, options = {}, &block) 

您可以添加到classoptions，像这样：

fields_for(:products_color, nil, { :class => 'col-md-4' }) do ...