I used to use a plugin to add the total order weight to each order and display it on the orders page on the back end. However, HPOS broke this and I have been trying to write the code to implement it again. I have Frankensteined a few snippets I have found, as my PHP skills are very limited, and this is as far as I have gotten, I just can’t seem to get it to populate the values.

I know a lot of you will look at this and say to yourself, what an idiot, but hopefully, someone might be able to point me in the right direction

add_filter( 'manage_woocommerce_page_wc-orders_columns', 'add_order_weight_column' );
function add_order_weight_column( $columns ) {
       $columns['total_weight'] = __( 'Weight', 'woocommerce' );
    return $columns;
}

add_action( 'manage_shop_order_posts_custom_column', 'populate_order_weight_column_content', 10, 2 );
function populate_order_weight_column_content( $column ) {
     if ( $column == 'total_weight' ) {
        global $the_order;

        $total_weight = $the_order->get_meta('_cart_weight');

        if ( $total_weight > 0 ) {
            echo wc_format_weight( $total_weight );
        } else {
            _e('N/A', 'woocommerce');
        }
    }
}

The column doesn’t need to be sortable, I just need the total weight to be displayed