Artist post type with Topic taxonomy

functions.php

// Topic Taxonomy
if ( ! function_exists( 'topic_taxonomy' ) ) {

// Register Topic Taxonomy
function topic_taxonomy() {

	$labels = array(
		'name'                       => _x( 'Topics', 'Taxonomy General Name', 'understrap' ),
		'singular_name'              => _x( 'Topic', 'Taxonomy Singular Name', 'understrap' ),
		'menu_name'                  => __( 'Topics', 'understrap' ),
		'all_items'                  => __( 'All topics', 'understrap' ),
		'parent_item'                => __( 'Parent Topic', 'understrap' ),
		'parent_item_colon'          => __( 'Parent Topic:', 'understrap' ),
		'new_item_name'              => __( 'New Topic Name', 'understrap' ),
		'add_new_item'               => __( 'Add New Topic', 'understrap' ),
		'edit_item'                  => __( 'Edit Topic', 'understrap' ),
		'update_item'                => __( 'Update Topic', 'understrap' ),
		'view_item'                  => __( 'View Topic', 'understrap' ),
		'separate_items_with_commas' => __( 'Separate topics with commas', 'understrap' ),
		'add_or_remove_items'        => __( 'Add or remove topics', 'understrap' ),
		'choose_from_most_used'      => __( 'Choose from the most used', 'understrap' ),
		'popular_items'              => __( 'Popular Topics', 'understrap' ),
		'search_items'               => __( 'Search Topics', 'understrap' ),
		'not_found'                  => __( 'Not Found', 'understrap' ),
		'no_terms'                   => __( 'No topics', 'understrap' ),
		'items_list'                 => __( 'Topics list', 'understrap' ),
		'items_list_navigation'      => __( 'Topics list navigation', 'understrap' ),
	);
	$args = array(
		'labels'                     => $labels,
		'hierarchical'               => false,
		'public'                     => true,
		'show_ui'                    => true,
		'show_admin_column'          => true,
		'show_in_nav_menus'          => true,
		'show_tagcloud'              => true,
		'show_in_rest'               => true,
	);
	register_taxonomy( 'topic', array( 'artist' ), $args );

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

}

// Artist Post Type
if ( ! function_exists('artist_post_type') ) {
    
    // Register Artist Post Type
    function artist_post_type() {
    
        $labels = array(
            'name'                  => _x( 'Artists', 'Post Type General Name', 'understrap' ),
            'singular_name'         => _x( 'Artist', 'Post Type Singular Name', 'understrap' ),
            'menu_name'             => __( 'Artists', 'understrap' ),
            'name_admin_bar'        => __( 'Artist', 'understrap' ),
            'archives'              => __( 'Artist Archives', 'understrap' ),
            'attributes'            => __( 'Artist Attributes', 'understrap' ),
            'parent_item_colon'     => __( 'Parent Artist:', 'understrap' ),
            'all_items'             => __( 'All Artists', 'understrap' ),
            'add_new_item'          => __( 'Add New Artist', 'understrap' ),
            'add_new'               => __( 'Add New', 'understrap' ),
            'new_item'              => __( 'New Artist', 'understrap' ),
            'edit_item'             => __( 'Edit Artist', 'understrap' ),
            'update_item'           => __( 'Update Artist', 'understrap' ),
            'view_item'             => __( 'View Artist', 'understrap' ),
            'view_items'            => __( 'View Artists', 'understrap' ),
            'search_items'          => __( 'Search Artist', 'understrap' ),
            'not_found'             => __( 'Not found', 'understrap' ),
            'not_found_in_trash'    => __( 'Not found in Trash', 'understrap' ),
            'featured_image'        => __( 'Artist Photo', 'understrap' ),
            'set_featured_image'    => __( 'Set artist photo', 'understrap' ),
            'remove_featured_image' => __( 'Remove artist photo', 'understrap' ),
            'use_featured_image'    => __( 'Use as artist photo', 'understrap' ),
            'insert_into_item'      => __( 'Insert into artist', 'understrap' ),
            'uploaded_to_this_item' => __( 'Uploaded to this artist', 'understrap' ),
            'items_list'            => __( 'Artists list', 'understrap' ),
            'items_list_navigation' => __( 'Artists list navigation', 'understrap' ),
            'filter_items_list'     => __( 'Filter artist list', 'understrap' ),
        );
        $args = array(
            'label'                 => __( 'Artist', 'understrap' ),
            'description'           => __( 'Artist in Kelola.', 'understrap' ),
            'labels'                => $labels,
            'supports'              => array( 'title', 'editor', 'thumbnail' ),
            'taxonomies'            => array( 'topic' ),
            'hierarchical'          => false,
            'public'                => true,
            'show_ui'               => true,
            'show_in_menu'          => true,
            'menu_position'         => 5,
            'menu_icon'             => 'dashicons-admin-customizer',
            'show_in_admin_bar'     => false,
            'show_in_nav_menus'     => false,
            'can_export'            => true,
            'has_archive'           => true,
            'exclude_from_search'   => false,
            'publicly_queryable'    => true,
            'capability_type'       => 'page',
            'show_in_rest'          => false,
        );
        register_post_type( 'artist', $args );
    }
	add_action( 'init', 'artist_post_type', 0 );
}