How to save and display user meta from Woocommerce order admin

Question

Customers have an extra field called billing_ean as part of their billing address.

I\'m using the following code to load, edit, and save their EAN number fr

Answer 1

Try the following instead, where the field displayed in order edit pages and the value is saved to order meta data and user meta data…

Your revisited code:

add_action( 'woocommerce_admin_order_data_after_billing_address', 'customer_ean_edit' );
function customer_ean_edit( $order ){
    $value = get_user_meta( $order->get_customer_id(), 'billing_eannr', true );
    ?>
    
 'billing_eannr',
            'label' => __('EAN nr.:', 'woocommerce'),
            'placeholder' => '',
            'value' => $value,
            'wrapper_class' => 'form-field-wide'
        ) );
    ?>
get_customer_id(), 'billing_eannr', sanitize_text_field( $_POST['billing_eannr'] ) );
    }
}

Code goes in function.php file of the active child theme (or active theme). tested and works.