Product Add-Ons Ultimate is compatible with the Invoice and Packing Slip plugin from Web Toffee.
To display order meta on a packing slip or invoice:
- In the Packing Slip plugin, go to Invoice Settings > Advanced
- Add the order meta and product meta as required
If the meta doesn’t show, you might need to add this snippet:
Here’s an extended snippet provided by WebToffee support:
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <?php | |
| /* This code was provided by WebToffee support on 10/21/25 | |
| * Makes Plugin Republic's Product Add-ons plugin available to use in the packing list PDF | |
| */ | |
| add_filter( 'wf_pklist_add_package_product_meta', 'wf_pklist_add_additional_fields', 10, 5 ); | |
| function wf_pklist_add_additional_fields( $additional_product_meta, $template_type, $_product, $order_item, $order ) { | |
| if ( 'packinglist' !== $template_type ) { | |
| return $additional_product_meta; | |
| } | |
| $order_item_id = isset( $order_item['order_item_id'] ) ? $order_item['order_item_id'] : 0; | |
| if ( ! $order_item_id ) { | |
| return $additional_product_meta; | |
| } | |
| $meta = wc_get_order_item_meta( $order_item_id, 'product_extras', true ); | |
| if ( empty( $meta ) || ! is_array( $meta ) ) { | |
| return $additional_product_meta; | |
| } | |
| foreach ( $meta as $meta_group ) { | |
| foreach ( $meta_group as $meta_values ) { | |
| foreach ( $meta_values as $meta_data ) { | |
| if ( ! empty( $meta_data['label'] ) && isset( $meta_data['value'] ) ) { | |
| $additional_product_meta .= sprintf( | |
| '<small><br>%s: %s</small>', | |
| esc_html( $meta_data['label'] ), | |
| esc_html( $meta_data['value'] ) | |
| ); | |
| } | |
| } | |
| } | |
| } | |
| return $additional_product_meta; | |
| } |