Something I meant to add a while ago.
How to add tags to pages and ensure they are included in tag queries.
Simply add this to “function.php”.
/**
* ADD Tags to Pages see https://www.sitepoint.com/wordpress-pages-use-tags/
*/
function tags_support_all() {
register_taxonomy_for_object_type('post_tag', 'page');
}
/**
* Ensure all tags are included in queries.
*/
function tags_support_query($wp_query) {
if ($wp_query->get('tag')) $wp_query->set('post_type', 'any');
}
/**
* Tag hooks.
*/
add_action('init', 'tags_support_all');
add_action('pre_get_posts', 'tags_support_query');