WooCommerce Print Invoice & Packing Lists - Change Category - php

Question

I've got a WooCommerce store set up with products in several categories and using the Print Invoice & Packing List plugin to generate packing lists for orders.
The plugin orders products by default based on the first category they are listed in, in alphabetical order.
I'm trying to set the plugin to ignore a preset list of categories by ID, so all products will still display, but only listed under the category I've allowed instead of the first category in alphabetical order.
I've read through the Invoice & Packing List dev reference grabbed a SkyVerge snippet and created a custom plugin which will disable categories completely, but can't for the life of me figure out how the WooCommerce hooks should work to ignore certain categories.
This is what I have in the custom plguin at the moment, which simply removes the categories from packing lists:
if ( ! defined( 'ABSPATH' ) )
add_filter( 'wc_pip_packing_list_group_items_by_category', '__return_false' );
function sv_wc_pip_packing_list_grouping( $group_items, $order_id, $document_type ) {
if ( 'pick-list' !== $document_type ) {
return $group_items;
}
$order = wc_get_order( $order_id );
if ( ! $order->is_paid() ) {
return false;
}
return $group_items;
}
add_filter( 'wc_pip_packing_list_group_items_by_category', 'sv_wc_pip_packing_list_grouping', 10, 3 );
Appreciate any help to identify how to define item categories in this function.

Answer 1

i think you could try this, section Document Filters from your documentation link:
wc_pip_packing_list_exclude_item
Params: $exclude, $product, $item, $item_data
Return: (bool)
Filters if an order item should be excluded from the packing list.
in your filter function, you should be able to test the category from $product, or at least get relevant info to query it. Then you just return true or false following the case