Crear taxonomía Niveles (Cursos)

Para el CPT “Cursos”

if ( ! function_exists( 'drg_custom_taxonomy_niveles' ) ) {

// Register Custom Taxonomy
function drg_custom_taxonomy_niveles() {

	$labels = array(
		'name'                       => _x( 'Niveles', 'Taxonomy General Name', 'drg_custom_taxonomy_niveles' ),
		'singular_name'              => _x( 'Nivel', 'Taxonomy Singular Name', 'drg_custom_taxonomy_niveles' ),
		'menu_name'                  => __( 'Niveles', 'drg_custom_taxonomy_niveles' ),
		'all_items'                  => __( 'Todos los niveles', 'drg_custom_taxonomy_niveles' ),
		'parent_item'                => __( 'Nivel padre', 'drg_custom_taxonomy_niveles' ),
		'parent_item_colon'          => __( 'Nivel padre', 'drg_custom_taxonomy_niveles' ),
		'new_item_name'              => __( 'Nuevo nivel', 'drg_custom_taxonomy_niveles' ),
		'add_new_item'               => __( 'Añadir nuevo nivel', 'drg_custom_taxonomy_niveles' ),
		'edit_item'                  => __( 'Editar nivel', 'drg_custom_taxonomy_niveles' ),
		'update_item'                => __( 'Actualizar nivel', 'drg_custom_taxonomy_niveles' ),
		'view_item'                  => __( 'Ver nivel', 'drg_custom_taxonomy_niveles' ),
		'separate_items_with_commas' => __( 'Separar niveles por comas', 'drg_custom_taxonomy_niveles' ),
		'add_or_remove_items'        => __( 'Añadir o quitar niveles', 'drg_custom_taxonomy_niveles' ),
		'choose_from_most_used'      => __( 'Elegir entre los más usados', 'drg_custom_taxonomy_niveles' ),
		'popular_items'              => __( 'Niveles populares', 'drg_custom_taxonomy_niveles' ),
		'search_items'               => __( 'Buscar niveles', 'drg_custom_taxonomy_niveles' ),
		'not_found'                  => __( 'No se ha encontrado', 'drg_custom_taxonomy_niveles' ),
		'no_terms'                   => __( 'No hay niveles', 'drg_custom_taxonomy_niveles' ),
		'items_list'                 => __( 'Lista de niveles', 'drg_custom_taxonomy_niveles' ),
		'items_list_navigation'      => __( 'Lista de navegacion de niveles', 'drg_custom_taxonomy_niveles' ),
	);
	$rewrite = array(
		'slug'                       => 'niveles',
		'with_front'                 => true,
		'hierarchical'               => false,
	);
	$args = array(
		'labels'                     => $labels,
		'hierarchical'               => true,
		'public'                     => true,
		'show_ui'                    => true,
		'show_admin_column'          => true,
		'show_in_nav_menus'          => true,
		'show_tagcloud'              => false,
		'rewrite'                    => $rewrite,
	);
	register_taxonomy( 'taxonomia_niveles', array( 'drg_cursos' ), $args );

}
add_action( 'init', 'drg_custom_taxonomy_niveles', 0 );

}