* In order for the waitlist counts on the product listings in admin to be accurate for variable products,
* we need to total up the number of waitlist registrations for their child product variations. We do this
* by adding the parent variable product id to the $updated_products array used below through the
* wcwl_updated_variable_products filter every time a waitlist is changed for a WC_Product_Variation.
*
* We then loop through this array and combine all the waitlist registrations for child products into one
* waitlist entry attached to the parent product
*
* @hooked shutdown
* @static
* @access public
* @return void
* @since 1.1.0
*/
public static function update_variable_product_waitlist_counts()
{
$updated_products = apply_filters('wcwl_updated_variable_products', array());
foreach (array_unique($updated_products) as $product_id) {
$waitlist = array();
$product = get_product($product_id);
foreach ($product->get_children() as $child_id) {
$waitlist = array_merge($waitlist, get_post_meta($child_id, WCWL_SLUG, true));
}
update_post_meta($product_id, WCWL_SLUG, $waitlist);
}
}
}
WooCommerce_Waitlist_Plugin::init();
}
}
}
