Reply To: Show Categories by Root Parent

@ George

The Connections taxonomy code for categories is very heavily based on the core WordPress code… there’s actually no really easy way of doing this. Basically a custom function would need to be written which would get all the categories for an entry, check each to see if it is an ancestor of category ID:34 and then output the appropriate HTML code. This function should do the trick:

function cn_display_terms_of_parent_term_id( $term_id, $terms ) {

    $found = array();

    foreach ( $terms as $term ) {

        if ( cnTerm::isAncestorOf( $term_id, $term->term_id, 'category' ) ) {

            $found[] = $term->term_id;
        }
    }

    foreach ( $found as $id ) {

        $category = cnTerm::get( $id, 'category' );

        if ( ! is_wp_error( $category ) ) {

            echo esc_html( $category->name );

        } elseif ( is_a( $category, 'WP_Error' ) ) {

            echo $category->get_error_message();
        }

    }

}

You would use it in the card-single.php file like this:

cn_display_terms_of_parent_term_id( 34, $entry->getCategory() );

That should output only the categories that were assigned to an entry with the parent ID of 34.