Exclude product category from invoice

Hi @lemontec,

You have changed the $document->type check too, but you had to change only the $not_allowed_cats, like this:

add_filter( 'wpo_wcpdf_document_is_allowed', 'wpo_wcpdf_not_allow_invoice_for_certain_categories', 10, 2 );
function wpo_wcpdf_not_allow_invoice_for_certain_categories ( $condition, $document ) {
	if ( $document->type == 'invoice' ) {

		//Set categories here (comma separated)
		$not_allowed_cats = array( 'noinvoice' );

		$order_cats = array();
		if ( $order = $document->order ) {
			//Get order categories
			foreach ( $order->get_items() as $item_id => $item ) {
				// get categories for item, requires product
				if ( $product = $item->get_product() ) {
					$id = $product->get_parent_id() ? $product->get_parent_id() : $product->get_id();
					$terms = get_the_terms( $id, 'product_cat' );

					if ( empty( $terms ) ) {
						continue;
					} else {
						foreach ( $terms as $key => $term ) {
							$order_cats[$term->term_id] = $term->slug;
						}
					}
				}
			}
		}

		// get array of category matches
		$cat_matches = array_intersect( $not_allowed_cats, $order_cats );
		if ( count( $cat_matches ) > 0 ) {
			return false; // 1 or more matches: do not allow invoice
		}
	}
	return $condition;
}

Try replacing your code with the above, and let me know if it worked! ??

Sorry that was a mistake when i copied the code, in the source code the document type check is ‘invoice’

Thanks for the clarification, Lemontec.

Did you try replacing your code with the one I sent, just to rule out there were a typo while editing the code snippet?

Yes, I tried your code snippet.
After placing the order its on hold (I use a cheque gateway for testing). Then order status is changed to processing and invoice number is generated and the invoice document sent along with the email.

Only product in the cart was a product with noinvoice category

Does the mentioned method also stop generating invoice numbers, when an order contains one ore more products with the noinvoice category or is it just the document generation which is blocked?

The code snippet above will completely disable the PDF invoice, that is, there will no created an invoice number either.

Did you check that your category slug is indeed noinvoice?

Yes, I have made screenshots here

https://www.dropbox.com/scl/fo/hjm669d00wrhg8qgx552x/h?rlkey=ryepig9lnjnb6y9ix95kdrowr&dl=0

I’ve added the ‘noinvoice’ category in my store along with the snippet, but it seems to be working on end. Does the category change when the order status is updated to processing/completed in your store? Are there any errors you can find as outlined here? You’re looking for errors prefixed with wpo_wcpdf or fatal_error

Since we haven’t heard from your in a while, I will mark this topic as resolved. Feel free to replay to it should you still need help.