app/views/admin/inventory/overviews/_form.html.erb
<fieldset id="admin-product-overviews" class='span-14'>
<legend>Inventory</legend>
<div>Count on Hand</div>
<div id="variant_overviews" class='span-14 last'>
<% @product.variants.each do |variant| %>
<div id='variant_<%= variant.id %>'
class="variant_form left span-14 last">
<%= form.fields_for :variants,
variant do |variant_inventory_form|%>
<div class='span-13 ' style='background-color: <%= cycle("#F2F5F9", "#FFF") -%>;'>
<div class='span-9 first'>
<%= variant.name_with_sku %>: # on hand => <%= variant.count_on_hand %>
</div>
<div class='span-3 prepend-1 last'>
Add <%= variant_inventory_form.text_field :qty_to_add , :class => 'span-1'%>
</div>
</div>
<% end %>
</div>
<% end %>
</div>
</fieldset>