Rails - Jan 2006 - Customizing autocomplete to update more than one value upon vaule select

Good day.

Currently I have a system that will successfully add a row to a table.
Each row in this table will represent a new product being added to a
purchase order.
The user can enter a quantity and then select a product code.
The product code is the auto_complete field. This field works.
However, once the user selects a product code then the values for the
product description, buy price, and unit weight should be updated
automatically.
To try and achieve this I have implemented the following:

view:
<td rowspan="2" align="center"><%=
text_field_with_auto_complete( :product,
:product_code, {}, { :updateElement => ''function(selectedElement){
alert("Element Selected: " + selectedElement.id);}'' })
%></td>
<td rowspan="2" align="center"><input
type="text" id="description_#{@counter}"
size="40"></td>
<td align="center"><input type="text"
id="buy_price_#{@counter}"
size="10"></td>
<td align="center"><input type="text"
id="sell_price_#{@counter}"
size="10"></td>
</tr>
<tr>
<td align="center"><input type="text"
id="weight2_#{@counter}"
size="10"></td>

controller:
def auto_complete_for_product_product_code
    auto_complete_responder_for_products params[:product][:product_code]
end
...
private
  def auto_complete_responder_for_products(value)
    @products = Product.find(:all, :conditions => [''product_code
LIKE ?'',
''%'' + params[:product][:product_code] + ''%'']
)
    render :partial => ''podetails_product''
  end

partial:
<ul>
    <% for @product in @products do %>
    <li weight="<%= @product.unit_weight %>"
buy_price="<%= @
product.unit_price %>" description="<%= @product.product_name
%>"><%= @
product.product_code %></li>
    <% end %>
</ul>

The log shows the following when attempting to enter a product code:
Processing
PurchaseOrderDetailController#auto_complete_for_product_product_code (for
127.0.0.1 at 2006-01-10 09:19:52) [POST]
  Parameters:
{"product"=>{"product_code"=>"5"},
"action"=>"auto_complete_for_product_product_code",
"controller"=>"purchase_order_detail"}
  [4;36;1mProduct Load (0.078000)   [0;1mSELECT * FROM products WHERE
(product_code LIKE ''%5%'') 
  [4;35;1mProduct Columns (0.000000)   SHOW FIELDS FROM
products
Rendered purchase_order_detail/_podetails_product (0.12500)
Completed in 0.28100 (3 reqs/sec) | Rendering: 0.12500 (44%) | DB:
0.07800(27%) | 200 OK [
http://localhost/purchase_order_detail/auto_complete_for_product_product_code
]


The result after a product code is chosen is nothing.
Nothing happens in the view and nothing happens in the log file.

Thoughts?
~damon
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