<?php
/** Experimental, use at your own risk. Test thoroughly to not mess up your SEO
** uses wpseo_robots from Wordpress Seo plugin (Yoast) to change direct links
** for facet pages with facets in url from index to noindex in robots meta tag.
** Note: Yoast removes the canonical link for page URLs with noindex.
**/
add_filter( 'wpseo_robots', function( $robots ) {
if ( function_exists( 'FWP' ) && ! FWP()->request->is_refresh && !empty( FWP()->request->url_vars ) ) {
return str_replace( 'index', 'noindex', $robots);
}
return $robots;
});