Rails：更改fields_for生成的div类

Question

Rails将fields_for（嵌套属性）生成的表单输入与<div class="fields">...</div>包装在一起。我需要将课程改为＆＃34; col-md-4＆＃34;或者至少添加它。我该怎么做？

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

Answer 1

文档：

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

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

您可以将class添加到options，如下所示：

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

Answer 2

对我来说，添加包装器：：false可以解决问题。

form.fields_for(association, new_object, child_index: 'new_record', :wrapper => false )