Taxonomy tags not found in front-end

• Squasher

• July 2, 2020 at 7:14 pm

Hi,

I’ve got a problem which is probably easy to solve, but I can’t get it done… 🙁

I’m using custom post types with tags. When I add a tag in the back-end, let’s say “marketing”, I can see it on the front-end when I look at all the available tags. But not on a single (custom) post (type), then they are not visable. And if I click on a term and go to the page with all the posts containing that term (domain.com/tag/marketing) it says: Nothing found.

To be clear: if I add a term to a “normal” post (not a custom post type), it works as it should: tag term is visable on single post and when I click on the term I see an overview with posts with that tag term.

At first I created the CPT with the following code:

//Custom post type cases
add_action('init', 'cases_register');
function cases_register() {
    $args = array(
        'labels' => array(
			'name' => __('Cases'),
			'singular_name' => __('Case'),
			'add_new' => __('Add case'),
			'add_new_item' => __('Add case'),
			'edit_item' => __('Edit case'),
			'new_item' => __('New case'),
			'all_items' => __('All cases'),
			'view_item' => __('View case'),
			'search_items' => __('Search case'),
			'not_found' =>  __('No case found'),
			'not_found_in_trash' => __('Nothing found in trash'),
			'menu_name' => 'Cases'
	),
        'public' => true,
        'show_ui' => true,
	'publicly_queryable' => true,
	'exclude_from_search' => false,
	'query_var' => true,
	'show_in_nav_menus' => true,
        'capability_type' => 'post',
        'hierarchical' => true,
        'rewrite' => true,
        'supports' => array('title', 'thumbnail', 'comments'),
	'taxonomies' => array('cases', 'post_tag')
    );
    register_post_type( 'cases' , $args );
}

When this did not work I tried using the tags field in ACF. But the result is the same. It looks as if the tags are not “tied” to the custom posts.

Anybody any ideas?

Thanks!

• Squasher

• July 2, 2020 at 8:14 pm

I seem to have solved this in the end. I added this code to my plugin:

function wpa_cpt_tags( $query ) {
    if ( $query->is_tag() && $query->is_main_query() ) {
        $query->set( 'post_type', array( 'post', 'case' ) );
    }
}
add_action( 'pre_get_posts', 'wpa_cpt_tags' );

This can also be added to functions.php.