Một ví dụ kinh điển sử dụng Custom Post Type && Custom Taxonomies dùng chung đường dẫn (ok)

Chú ý: Taxonomy và post type không bao giờ được trùng nhau :( xem ảnh:

C:\xampp\htdocs\wordpress1\wp-content\themes\twentytwentyone\functions.php

// ===========
add_action('init', 'my_realisaties_taxonomy', 30);
function my_realisaties_taxonomy() {
    $labels = array(
        'name'              => _x('Realisaties', 'taxonomy general name'),
        'singular_name'     => _x('Realisatie', 'taxonomy singular name'),
        'search_items'      => __('Search Realisaties'),
        'all_items'         => __('All Realisaties'),
        'parent_item'       => __('Parent Realisatie'),
        'parent_item_colon' => __('Parent Realisatie:'),
        'edit_item'         => __('Edit Realisatie'),
        'update_item'       => __('Update Realisatie'),
        'add_new_item'      => __('Add New Realisatie'),
        'new_item_name'     => __('New Genre Realisatie'),
        'menu_name'         => __('Realisatie Taxonomy'),
    );
    $args = array(
        'hierarchical'      => true,
        'labels'            => $labels,
        'show_ui'           => true,
        'show_admin_column' => true,
        'query_var'         => true,
        'rewrite'           => array('slug' => 'realisaties'),
        'show_in_rest'      => true,
        'rest_base'         => 'realisatiesabc',
    );
    register_taxonomy('realisatiesabc', array('realisaties'), $args);
    flush_rewrite_rules(true);
}

C:\xampp\htdocs\wordpress1\wp-content\themes\twentytwentyone\taxonomy-realisatiesabc.php

<?php
/**
 * The template for displaying archive pages
 *
 * @link https://developer.wordpress.org/themes/basics/template-hierarchy/
 *
 * @package WordPress
 * @subpackage Twenty_Twenty_One
 * @since Twenty Twenty-One 1.0
 */

get_header();
?>
<?php if ( have_posts() ) : ?>
    <?php while ( have_posts() ) : ?>
        <?php the_post(); ?>
        <?php get_template_part( 'template-parts/content/content', get_theme_mod( 'display_excerpt_or_full_post', 'excerpt' ) ); ?>
    <?php endwhile; ?>

    <?php twenty_twenty_one_the_posts_navigation(); ?>

<?php else : ?>
    <?php get_template_part( 'template-parts/content/content-none' ); ?>
<?php endif; ?>
<?php get_footer(); ?>

C:\xampp\htdocs\wordpress1\wp-content\themes\twentytwentyone\single-realisaties.php

<?php
/**
 * The template for displaying all single posts
 *
 * @link https://developer.wordpress.org/themes/basics/template-hierarchy/#single-post
 *
 * @package WordPress
 * @subpackage Twenty_Twenty_One
 * @since Twenty Twenty-One 1.0
 */

get_header();
$elementor_page = get_post_meta( get_the_ID(), '_elementor_edit_mode', true );
if ($elementor_page ) {
    echo "Yes";
}else {
    echo "No";
}
/* Start the Loop */
while ( have_posts() ) :
    the_post();
    get_template_part( 'template-parts/content/content-single' );
endwhile; // End of the loop.
get_footer();