如何将复制按钮集成到使用cocoon gem创建的表单中

gem 'cocoon'

<%= form_for @model do |f| %>
  <%= f.fields_for :nested_models do |nested_form| %>
    <%= render 'nested_model_fields', f: nested_form %>
  <% end %>
  <%= link_to_add_association 'Add Nested Model', f, :nested_models %>
  <%= f.submit 'Submit' %>
<% end %>

<%= form_for @model do |f| %>
  <%= f.fields_for :nested_models do |nested_form| %>
    <%= render 'nested_model_fields', f: nested_form %>
    <%= nested_form.link_to_remove 'Remove' %>
    <%= nested_form.link_to_add_association 'Add Nested Model', f, :nested_models do %>
      <i class="fa fa-copy"></i> Copy
    <% end %>
  <% end %>
  <%= f.submit 'Submit' %>
<% end %>

.fa-copy:before {
  content: "\f0c5";
}