woocommerce_admin_order_item_coupon_url │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_admin_order_item_coupon_url', 'wp_kama_woocommerce_admin_order_item_coupon_url_filter', 10, 3 );

/**
 * Function for `woocommerce_admin_order_item_coupon_url` filter-hook.
 * 
 * @param  $add_query_arg 
 * @param  $item          
 * @param  $order         
 *
 * @return 
 */
function wp_kama_woocommerce_admin_order_item_coupon_url_filter( $add_query_arg, $item, $order ){

	// filter...
	return $add_query_arg;
}

$add_query_arg

-

$item

-

$order

-

Where the hook is called

$post_url = apply_filters(
	'woocommerce_admin_order_item_coupon_url',
	add_query_arg(
		array(
			'post'   => $post_id,
			'action' => 'edit',
		),
		admin_url( 'post.php' )
	),
	$item,
	$order
);

Where the hook is used in WooCommerce