OpenCart 3.0+ Tracking Setup

For OpenCart version v3.0 and higher, first locate the file \catalog\controller\checkout\success.php.

As always, make a backup of the file first. Once you've made a backup, look for this line in the file:

$this->cart->clear();

Above it, add the following code:

/* begin ShareASale tracking business logic */
			//discounts
			$_sasCoupon = array();
			$this->load->model('extension/total/coupon');
			if(@$this->session->data['coupon']){
				$_sasCoupon = $this->model_extension_total_coupon->getCoupon($this->session->data['coupon']);
			}
			//product-level tracking
			//product model necessary to get SKU since cart->getProducts() returns different data than product->getProducts()...
			$this->load->model('catalog/product');	
			$_sasSkulist      = [];
			$_sasPricelist    = [];
			$_sasQuantitylist = [];
			$_sasProductCount = $this->cart->countProducts();
			foreach ($this->cart->getProducts() as $product) {
				$_sasSkulist[]      = $this->model_catalog_product->getProduct($product['product_id'])['sku'];
				$_sasQuantitylist[] = $product['quantity'];
				//check if product or cart-wide discount, and check if flat (type "F") or percent (type "P"). Ignore free shipping discounts.
				if(!empty($_sasCoupon['product'])){
					if(in_array($product['product_id'], $_sasCoupon['product'])){
						$_sasProductSubtotal = ($_sasCoupon['type'] == 'P') ? $product['price'] * (1 - ($_sasCoupon['discount'] / 100)) : (($_sasCoupon['type'] == 'F') ? $product['price'] - $_sasCoupon['discount'] : $product['price']);
					}else{
						$_sasProductSubtotal = $product['price'];
					}
				}else{
					$_sasProductSubtotal = (@$_sasCoupon['type'] == 'P') ? $product['price'] * (1 - ($_sasCoupon['discount'] / 100)) : ((@$_sasCoupon['type'] == 'F') ? $product['price'] - ($_sasCoupon['discount'] / $_sasProductCount) : $product['price']);
				}

				$_sasPricelist[] = round($_sasProductSubtotal, 2);
			}
			$_sasProductSubtotal = array_sum(array_map(function($price, $quantity) { return $price * $quantity; }, $_sasPricelist, $_sasQuantitylist));
			//check for store credit and apply to final balance
			$_sasBalance = $this->db->query("SELECT SUM(amount) AS balance FROM " . DB_PREFIX . "customer_transaction WHERE customer_id = '" . (int)$this->customer->getId() . "' AND order_id <> '" . (int)$this->session->data['order_id'] . "'")->row['balance'];
			if($_sasBalance){
				//compare store credit to after-discount product subtotal to get percentage paid by store credit, if not its entirety
				$_sasShare = $_sasBalance / $_sasProductSubtotal > 1 ? 1 : $_sasBalance / $_sasProductSubtotal;
				$_sasPricelist = array_map(function($price) use($_sasShare) { return $price * (1 - $_sasShare); }, $_sasPricelist);
				$_sasTotal = $_sasProductSubtotal = array_sum(array_map(function($price, $quantity) { return $price * $quantity; }, $_sasPricelist, $_sasQuantitylist));
			}else{
				$_sasTotal = $_sasProductSubtotal;
			}

			$data['_sasProducts'] = [implode(',', $_sasSkulist), implode(',', $_sasPricelist), implode(',', $_sasQuantitylist)];
			//customer status tracking
			if ($this->customer->isLogged() && $this->customer->getId() != 0) {
			    $totalOrders = $this->db->query("SELECT COUNT(`order_id`) AS `total` FROM `" . DB_PREFIX . "order` WHERE `customer_id` = '" . (int)$this->customer->getId() . "'");
			    $data['_sasIsCustomerNew'] = (int)$totalOrders->row['total'] > 1 ? 0 : 1;
			}else {
				$data['_sasIsCustomerNew'] = '';
			}
			//standard order total and order ID tracking			 
			$data['_sasTotal'] =  $_sasTotal;
			$data['_sasOrderId'] = $this->session->data['order_id'];
			//$data['_sasCurrencyCode'] = $this->session->data['currency']; _sasTotal always in USD even when currency changes...
			$data['_sasCoupons'] = !empty($_sasCoupon) ? $_sasCoupon['code'] : '';			
			/* end ShareASale tracking business logic */

Then find the file \catalog\view\theme\[your theme]\template\common\success.twig. If no theme is configured, use \default\ where [your theme] is written. Make a backup of this file too, and then look for this line:

{{ footer }}

Above it, add the following code:

Replace “XXXXX” in the script below with your ShareASale Merchant ID

<!-- begin ShareASale tracking -->
<img src = "<https://shareasale.com/sale.cfm?amount={{> _sasTotal }}&amp;tracking={{ _sasOrderId }}&amp;transtype=sale&amp;merchantID=XXXXX&amp;skulist={{ _sasProducts[0] }}&amp;pricelist={{ _sasProducts[1] }}&amp;quantitylist={{ _sasProducts[2] }}&amp;v=opencart3&amp;newcustomer={{ _sasIsCustomerNew }}&amp;couponcode={{ _sasCoupons }}" >
<!--- end ShareASale tracking -->