rails 中 def edit product = Productfindparamsid product_skus = productproduct_skusexists productproduct_skusfirst nil end_formhtmlerbdiv class=my-2 data-controller=nested-rondo div data-ne

如果@product_skus是一个集合（collection），可以在_form.html.erb中使用each迭代器来处理每个product_sku。修改后的代码如下：

<div class="my-2" data-controller="nested-rondo">
  <div data-nested-rondo-target="fieldContain">
    <% if @product_skus.present? %>
      <% @product_skus.each do |product_sku| %>
        <%= fields_for product_sku do |product_sku_fields| %>
          <%= render "product_sku_fields", f: product_sku_fields %>
        <% end %>
      <% end %>
    <% end %>
  </div>
  <div class="links">
    <%= link_to_add_association "Add SKU", f, :product_skus %>
  </div>
</div>
<hr class="hr-light">
<div>
  <%= f.submit "保存", class: "btn btn-primary float-end" %>
</div>

这样，_form.html.erb文件将能够正确处理@product_skus集合中的每个product_sku