'wpsc_before_shopping_cart_page', 'classname' => __CLASS__, 'inject_function' => 'injectInitiateCheckoutEvent')); // Purchase add_action( 'wpsc_transaction_results_shutdown', array(__CLASS__, 'injectPurchaseEvent'), 11, 3); } // Event hook for AddToCart. public static function injectAddToCartEvent($response) { if (FacebookPluginUtils::isAdmin()) { return $response; } $product_id = $response['product_id']; $params = static::getParametersForCart($product_id); $code = FacebookPixel::getPixelAddToCartCode($params, self::TRACKING_NAME, true); $code = sprintf(" %s ", $code); $response['widget_output'] .= $code; return $response; } public static function injectInitiateCheckoutEvent() { if (FacebookPluginUtils::isAdmin()) { return; } $code = FacebookPixel::getPixelInitiateCheckoutCode(array(), self::TRACKING_NAME, false); printf(" ", $code); } public static function injectPurchaseEvent($purchase_log_object, $session_id, $display_to_screen) { if (FacebookPluginUtils::isAdmin() || !$display_to_screen) { return; } $params = static::getParametersForPurchase($purchase_log_object); $code = FacebookPixel::getPixelPurchaseCode($params, self::TRACKING_NAME, true); printf(" %s ", $code); } private static function getParametersForPurchase($purchase_log_object) { $cart_items = $purchase_log_object->get_items(); $total_price = $purchase_log_object->get_total(); $currency = function_exists('\wpsc_get_currency_code') ? \wpsc_get_currency_code() : 'Unknown'; $item_ids = array(); foreach ($cart_items as $item) { // This is for backwards compatibility $item_array = (array) $item; $item_ids[] = $item_array['prodid']; } $params = array( 'content_ids' => $item_ids, 'content_type' => 'product', 'currency' => $currency, 'value' => $total_price, ); return $params; } private static function getParametersForCart($product_id) { global $wpsc_cart; $cart_items = $wpsc_cart->get_items(); foreach ($cart_items as $item) { if ($item->product_id === $product_id) { $unit_price = $item->unit_price; break; } } $params = array( 'content_ids' => array($product_id), 'content_type' => 'product', 'currency' => function_exists('\wpsc_get_currency_code') ? \wpsc_get_currency_code() : 'Unknown', 'value' => $unit_price, ); return $params; } }