wordpress - How to add custom fields for WooCommerce order page (admin)?

Question

I would like to add few input fields for the orders in WooCommerce/Wordpress. The fields will be only visible on the admin page. How to do that? Is it same like the pages/posts?

For the post types above I used add_post_meta. Is it the best way for that, or is there any hook for order fields?

Answer 1

Yes, just add_meta_box() to the post type shop_order and proceed as normal.

add_action( 'add_meta_boxes', 'add_meta_boxes' );

function add_meta_boxes()
{
    add_meta_box( 
        'woocommerce-order-my-custom', 
        __( 'Order Custom' ), 
        'order_my_custom', 
        'shop_order', 
        'side', 
        'default' 
    );
}
function order_my_custom()
{
    echo '<h1>Sample meta box</h1>';
}