How can I get a subtotal by looping. Using SugarCRM CE 6.5.13 - sugarcrm

Question

I am trying to get a total from the rows returned for the selected opportunity.
When a opportunity is selected each product they have purchased and its price is listed. I am trying to use the price for each purchased product to get a subtotal for all sales made with that opportunity.
Here is the code I have:
function total(&$focus, $event, $arguments)
{
$total = 0;
foreach ($this->bean->Product_Sales['sales_price_c'] as $entry) {
$total += unformat_number($entry['sales_price_c']);
}
$this->bean->ss->assign('total_sales_c', format_number($total));
}
Example of how rows are returned:
[Product_Name_Field] [Product_Price_Field] [Sales_Person_Field] [Etc_Field]
Only qty(1) Product sold per returned row.
What am I doing wrong?
Thanks in advance.

Answer 1

Okay I figured it out!!!!
This is File view.detail.php in Custom/Module/Opportunities/Views/
<?php
if(!defined('sugarEntry') || !sugarEntry) die('Not A Valid Entry Point');
require_once('include/MVC/View/views/view.detail.php');
class OpportunitiesViewDetail extends ViewDetail {
function OpportunitiesViewDetail(){
parent::ViewDetail();
}
function display() {
$account = new Opportunity();//var = new ModuleName() in singular form
$account->retrieve($_REQUEST['record']);//This grabs the record
$contacts = $account->get_linked_beans('opportunities_op_ps_product_sales_1','Contact');
//this uses the get_linked_beans(Param 1 is the linked var name found in the vardefs ,Param 2 is the name of the object you are creating. The name can be anything you like.)
// loop through the created associations to get fields.
foreach ( $contacts as $contact ) {
$total += $contact->sales_price_c;//add the value of each sale to the variable
}
//populate the field you want with the value in the $total var
echo "
<script>
var total = '$total';
$(document).ready(function(){
$('#total_sales_c').after(total); });
</script>";
parent::display();
}
}
?>
Hopefully this will help others.