Rails - Jul 2006 - error when updating table with select box

trying to update a table with form input from a select box and getting 
this error: "Options does not specify :except or :only"


#View:

 <%= start_form_tag :action => ''order_update'', :id =>
@order %>
 <div>
 Status <br />
<select name="order[shipping_status]">
<option>None</option>
<option>Paid</option>
<option>Shipped</option>
</select>


    <%= submit_tag ''Update'' %>

  <%= end_form_tag %>
 </div>



#controller:

 def order_update
    @order = Order.find(params[:id])

    if @order.attributes(params[:order])
      flash[:notice] = ''order was successfully updated.''
      redirect_to :action => ''order_detail'', :id =>
@order
    else
      render :action => ''edit''
    end
  end

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