Adding a metabox to the WooCommerce orders screen is a bit different High Performance Order Storage (HPOS). If you want to support both HPOS and the legacy order system, here’s how to do it.
<?php
namespace Your_Namespace;
use Automattic\WooCommerce\Internal\DataStores\Orders\CustomOrdersTableController;
/**
* Class Metabox.
*
* Example for how to add a metabox to the order screen that supports both HPOS and legacy order storage.
* More information: https://github.com/woocommerce/woocommerce/wiki/High-Performance-Order-Storage-Upgrade-Recipe-Book#audit-for-order-administration-screen-functions
*/
class Metabox {
public static $instance;
/**
* Main Metabox Instance.
*
* Ensures only one instance of the Metabox is loaded or can be loaded.
*
* @return Metabox - Main instance.
*/
public static function instance() {
if ( is_null( self::$instance ) ) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Constructor.
*/
public function __construct() {
add_action( 'add_meta_boxes', array( $this, 'address_validation_controls' ) );
}
/**
* Adds a metabox to the order edit screen for address validation.
*/
public function address_validation_controls() {
$screen = wc_get_container()->get( CustomOrdersTableController::class )->custom_orders_table_usage_is_enabled()
? wc_get_page_screen_id( 'shop-order' )
: 'shop_order';
add_meta_box(
'address_validation_actions',
__( 'Validate Address', 'textdomain' ),
array( $this, 'render_address_validation_actions' ),
$screen,
'side',
'high'
);
}
/**
* Renders out the HTML shown in the metabox.
*/
public function render_address_validation_actions( $post_or_order_object ) {
$order = ( $post_or_order_object instanceof WP_Post ) ? wc_get_order( $post_or_order_object->ID ) : $post_or_order_object;
if ( ! $order ) {
return;
}
// We can only validate US addresses.
if ( $order->get_shipping_country() !== 'US' ) {
return;
}
?>
<div class="action-address-validate">
<p>Validate the shipping address.</p>
<button type="button" class="button format-address">Validate Address</button>
</div>
<?php
}
}Link to code on GitHub: https://gist.github.com/devinsays/0988711df0a43d7911693c8c4b2dc1d7
