问在Woocommerce中，将自定义字段值作为电子邮件订单汇总表中的新行插入

EN

add_filter( 'woocommerce_get_order_item_totals', 'insert_custom_line_order_item_totals', 10, 3 );
function insert_custom_line_order_item_totals( $total_rows, $order, $tax_display ){
    // Only on emails notifications
    if( is_wc_endpoint_url() ) return $total_rows; // Exit

    $tracking_label = 'Track & Trace Pakkenr.'; // The tracking label name
    $tracking_value = $order->get_meta( $tracking_label ); // Get the tracking value (custom field).

    if( empty($tracking_value) ) return $total_rows; // Exit

    $new_total_rows  = array(); // Initializing

    // Loop through total rows
    foreach( $total_rows as $key => $value ){
        if( 'payment_method' == $key && ! empty($tracking_value) ) {
            $new_total_rows['tracking_parcel'] = array(
                'label' => $tracking_label,
                'value' => $tracking_value,
            );
        }
        $new_total_rows[$key] = $total_rows[$key];
    }

    return sizeof($new_total_rows) > 0 ? $new_total_rows : $total_rows;
}

/**
 * Add a custom field (in an order) to the emails
 */
add_filter( 'woocommerce_email_order_meta_fields', 'custom_woocommerce_email_order_meta_fields', 10, 3 );

function custom_woocommerce_email_order_meta_fields( $fields, $sent_to_admin, $order ) {
    $fields['meta_key'] = array(
        'label' => __( 'Label' ),
        'value' => get_post_meta( $order->id, 'meta_key', true ),
    );
    return $fields;
}

add_filter( 'woocommerce_email_order_meta_fields', 'woocommerce_email_order_meta_fields_func', 10, 3 );

function woocommerce_email_order_meta_fields_func( $fields, $sent_to_admin, $order ) {

    $fields['Track_Field'] = array(
        'label' => __( 'Track', 'woocommerce' ),
        'value' => wptexturize( get_post_meta( $order->id, 'Track_Field', true ) )
    );


    //... more meta fields goes here

    return $fields;
}

add_action( 'woocommerce_email_after_order_table', 'woocommerce_email_after_order_table_func' );
function woocommerce_email_after_order_table_func( $order ) {
    ?>

    <h3>Track</h3>
    <table>
        <tr>
            <td>Track Fields </td>
            <td><?php echo wptexturize( get_post_meta( $order->id, 'Track_Field', true ) ); ?></td>
        </tr>

        <!--additional custom meta and HTML code goes here-->
    </table>

    <?php
}