删除Woocommerce 3中的订单商品后，未保存重新计算的总计

I'm using Wordpress 4.9.6 and WooCommerce 3.4.2 on a Woocommerce site and where I have a custom feature that creates invoices for event registrations.

Right now I'm working on a script that will just remove one item from an existing order. The items remove fine, but the total doesn't recalculate. I can view the order in wp-admin and recalculate the totals from there fine, but I need it to happen in this script.

I can't for the life of me figure out what's keeping this from working...

My actual code:

$order = wc_get_order($event_registration['OrderID']);

if ( count($order->get_items()) > 1 ) {
  if ( !wc_delete_order_item($event_registration['OrderItemID']) ) {
    return array('error' => 'Problem removing order item');
  }

  $updated_order = wc_get_order($event_registration['OrderID']);

  if ( count($updated_order->get_items()) > 0) {
    $updated_order->calculate_totals();
    PluginWoo::update_invoice($updated_order->get_id());

    return true;
  } else {
    if ( !wp_delete_post( $event_registration['OrderID'], true ) ) {
      return array('error' => 'Problem deleting order after deleting items');
    }
    return true;
  }
} else {
  if ( !wp_delete_post( $event_registration['OrderID'], true ) ) {
    return array('error' => 'Problem deleting order');
  }
  return true;
}

Any help on this is appreciated.

If it's like wc_delete_order_item() function is running asynchronously and not completing before calculate_totals() method, you could try to use WC_Data delete() method instead.

As your code is not really testable, I am just wondering. So you could try something like:

$order = wc_get_order( $event_registration['OrderID'] );
$items = $order->get_items();
if ( count($items) > 1 ) {
    if( isset( $items[$event_registration['OrderItemID']] ) )
        $items[$event_registration['OrderItemID']]->delete(); // Deleting
    else
        return array('error' => 'Problem removing order item'); // Returning error
}

$updated_order = wc_get_order( $event_registration['OrderID'] );
$items = $updated_order->get_items();
if ( count($items) > 0 ) {
    $updated_order->calculate_totals();

    PluginWoo::update_invoice($updated_order->get_id());
    return true;
} else {
    if( isset( $items[$event_registration['OrderItemID']] ) )
        $items[$event_registration['OrderItemID']]->delete(); // Deleting
    else
        return array('error' => 'Problem deleting order after deleting items');

    return true;
}

It could works…