<?php
/** for an on sale product query add this to query args, use in advanced query view
** for layout templates - ex. https://d.pr/i/p5hxWm
** "post__in" => array_merge( [0], wc_get_product_ids_on_sale() )
**/
/** this may cause facet to detect the query used in wc_get_product_ids_on_sale
** use this filter to prevent
**/
add_filter( 'facetwp_is_main_query', function( $is_main_query, $query ) {
if ( 0 > $query->get( 'posts_per_page', 0 ) ) { // skips in query for -1 as post_per_page
$is_main_query = false;
}
return $is_main_query;
}, 10, 2 );