fields_for need index of loop

hi,

I need the "counter" for my fields_for loop to plug into a javascript function in the partial.

VIEW:
            <% f.fields_for :trans_products do |builder| %>
                <%= render 'trans_product_fields', :f => builder %>
            <% end %>

f is a transaction, trans_products belongs_to transaction, transaction accepts_nested_attributes_for trans_products.

so in the PARTIAL:

<tr class="fields">
    <td><%= f.text_field :po, :class => 'prodinfo' %></td>
    <td><%= f.text_field :so, :class => 'prodinfo' %></td>
    <td><%= f.text_field :product, :class => 'prodinfo' %></td>
    <td><%= f.text_field :serial, :class => 'prodinfo' %></td>
    <td class=bigprodinfo><%= f.date_select :pos_date, :include_blank => true, :order => [:month, :day, :year] %>
    <%= link_to_function("today", "set_today(#{?????},'pos_date')", :class => "today_link")  %>    </td>
    <td><%= link_to_remove_product "remove", f %></td>           
</tr>

the ???? should read transaction_trans_products_attributes_#number#, #number# shows up correctly for the textfields, the po text field reads id="transaction_trans_products_attributes_0_po" the next trans_product row has id="transaction_trans_products_attributes_1_po"

how can i get this counter value into my link_to_function parameter?

Last edited by gmcc (2010-08-20 16:34:14)