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How can I create a custom post type with hierarchical taxonomy in WordPress?

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How can I create a custom post type with hierarchical taxonomy in WordPress?

Asked on Feb 09, 2026

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Creating a custom post type with a hierarchical taxonomy in WordPress involves registering both the post type and the taxonomy using WordPress functions. This allows you to organize content in a structured manner, similar to how pages and categories work.

<!-- BEGIN COPY / PASTE -->
    function my_custom_post_type() {
        register_post_type('book', array(
            'labels' => array(
                'name' => __('Books'),
                'singular_name' => __('Book')
            ),
            'public' => true,
            'has_archive' => true,
            'supports' => array('title', 'editor', 'thumbnail'),
        ));
    }
    add_action('init', 'my_custom_post_type');

    function my_custom_taxonomy() {
        register_taxonomy('genre', 'book', array(
            'labels' => array(
                'name' => __('Genres'),
                'singular_name' => __('Genre')
            ),
            'hierarchical' => true,
        ));
    }
    add_action('init', 'my_custom_taxonomy');
    <!-- END COPY / PASTE -->

Additional Comment:

Ensure the code is added to your theme's functions.php file or a custom plugin.
The 'hierarchical' parameter in register_taxonomy() allows the taxonomy to behave like categories.
After registration, you can manage your custom post types and taxonomies from the WordPress dashboard.
Always back up your site before making changes to functions.php.

✅ Answered with WordPress best practices.

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How can I create a custom post type with hierarchical taxonomy in WordPress?

Asked on Feb 09, 2026

Answer

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