Query Post Based of Yoast Primary Category Class
Yoast SEO stores the primary term ID as the post meta field _yoast_wpseo_primary_{taxonomy}. Knowing this you can use a meta query to get all posts with primary category ID X: $query = new WP_Query([ ‘cat’ => ‘X’, // Just in case Yoast data corrupted & post no longer attached to X term but primary meta … Read more