telsender coupons | woocommerce

functions.php

<?php

/**
 * Telsender coupons name
 * @param $list
 * @param $order_id
 * @return mixed
 */
function telsender_coupons($list, $order_id){

    // (optional if not defined) An instance of the WC_Order object
    $order = wc_get_order( $order_id );

    $coupons = $order->get_coupon_codes();
    $coupon_line = implode(' | ', $coupons);

    $list['{coupons}'] = $coupon_line;

    return  $list;
}

add_filter( 'tscf_filter_codetemplate','telsender_coupons', 20, 2 );