Edit file File name : OrderRefund.php Content :<?php /** * WC Admin Order Refund * * WC Admin Order Refund class that adds some functionality on top of general WooCommerce WC_Order_Refund. */ namespace Automattic\WooCommerce\Admin\Overrides; defined( 'ABSPATH' ) || exit; use Automattic\WooCommerce\Admin\API\Reports\Customers\DataStore as CustomersDataStore; /** * WC_Order_Refund subclass. */ class OrderRefund extends \WC_Order_Refund { /** * Order traits. */ use OrderTraits; /** * Caches the customer ID. * * @var int */ public $customer_id = null; /** * Add filter(s) required to hook this class to substitute WC_Order_Refund. */ public static function add_filters() { add_filter( 'woocommerce_order_class', array( __CLASS__, 'order_class_name' ), 10, 3 ); } /** * Filter function to swap class WC_Order_Refund for this one in cases when it's suitable. * * @param string $classname Name of the class to be created. * @param string $order_type Type of order object to be created. * @param number $order_id Order id to create. * * @return string */ public static function order_class_name( $classname, $order_type, $order_id ) { // @todo - Only substitute class when necessary (during sync). if ( 'WC_Order_Refund' === $classname ) { return '\Automattic\WooCommerce\Admin\Overrides\OrderRefund'; } else { return $classname; } } /** * Get the customer ID of the parent order used for reports in the customer lookup table. * * @return int|bool Customer ID of parent order, or false if parent order not found. */ public function get_report_customer_id() { if ( is_null( $this->customer_id ) ) { $parent_order = \wc_get_order( $this->get_parent_id() ); if ( ! $parent_order ) { $this->customer_id = false; } $this->customer_id = CustomersDataStore::get_or_create_customer_from_order( $parent_order ); } return $this->customer_id; } /** * Returns null since refunds should not be counted towards returning customer counts. * * @return null */ public function is_returning_customer() { return null; } } Save