カスタム投稿をCustom Post Type UIで作成するメリット

//お知らせ
function create_post_type_news() {
	$labels = array(
        'name'               => __( 'お知らせ' ),
        'singular_name'      => __( 'お知らせ' ),
        'add_new'            => __( '新規追加' ),
        'add_new_item'       => __( 'お知らせを追加' ),
        'edit_item'          => __( 'お知らせを編集' ),
        'new_item'           => __( '新規お知らせ' ),
        'view_item'          => __( 'お知らせを表示' ),
        'search_items'       => __( 'お知らせを検索' ),
        'not_found'          => __( 'お知らせが見つかりません' ),
        'not_found_in_trash' => __( 'ゴミ箱にお知らせはありません' ),
        'parent_item_colon'  => __( '親:' ),
        'menu_name'          => __( 'お知らせ' ),
    );
	$args = array(
		'labels'	=> $labels,
		'supports'	=> array('title','editor','excerpt','thumbnail'),
		'public'	=> true,	// 公開するかどうか
		'show_ui'	=> true,	// メニューに表示するかどうか
		'menu_position'	=> 4,	// メニューの表示位置
		'has_archive'	=> true,	// アーカイブページの作成
		'hierarchical' => true,
		'show_in_rest' => true,
	);
	register_post_type( 'news', $args );
	
///カテゴリータイプ
	register_taxonomy(
		'news-cat',  // カスタム分類名
		'news',      // カスタム分類を使用する投稿タイプ名
		array(
			'hierarchical' => true,
			'label' => 'カテゴリー',
			'singular_label' => 'カテゴリー',
			'public' => true,
			'show_admin_column' => true, //管理画面のカスタム投稿一覧にカテゴリを表示
			'show_ui' => true,
			'rewrite' => array( 'slug' => 'news-cat' ),
			'show_in_rest' => true,
		)
	);

///タグタイプ
	register_taxonomy(
		'news-tag',  // カスタム分類名
		'news',      // カスタム分類を使用する投稿タイプ名
		array(
			'hierarchical' => false,
			'label' => 'タグ',
			'singular_label' => 'タグ',
			'public' => true,
			'show_admin_column' => true, //管理画面のカスタム投稿一覧にタグを表示
			'show_ui' => true,
			'rewrite' => array( 'slug' => 'news-tag' ),
			'show_in_rest' => true,
		)
	);
}
add_action( 'init', 'create_post_type_news', 0 );

/**
 * カスタム投稿タイプ
 */
function cptui_register_my_cpts_news() {

	/**
	 * Post Type: お知らせ.
	 */

	$labels = [
		"name" => esc_html__( "お知らせ", "arkhe" ),
		"singular_name" => esc_html__( "お知らせ", "arkhe" ),
	];

	$args = [
		"label" => esc_html__( "お知らせ", "arkhe" ),
		"labels" => $labels,
		"description" => "",
		"public" => true,
		"publicly_queryable" => true,
		"show_ui" => true,
		"show_in_rest" => true,
		"rest_base" => "",
		"rest_controller_class" => "WP_REST_Posts_Controller",
		"rest_namespace" => "wp/v2",
		"has_archive" => true,
		"show_in_menu" => true,
		"show_in_nav_menus" => true,
		"delete_with_user" => false,
		"exclude_from_search" => false,
		"capability_type" => "post",
		"map_meta_cap" => true,
		"hierarchical" => false,
		"can_export" => false,
		"rewrite" => [ "slug" => "news", "with_front" => true ],
		"query_var" => true,
		"supports" => [ "title", "editor", "thumbnail", "excerpt", "revisions", "author", "page-attributes", "post-formats" ],
		"taxonomies" => [ "news-cat" ],
		"show_in_graphql" => false,
	];

	register_post_type( "news", $args );
}

add_action( 'init', 'cptui_register_my_cpts_news' );

function cptui_register_my_taxes_news_cat() {

	/**
	 * Taxonomy: お知らせカテゴリー.
	 */

	$labels = [
		"name" => esc_html__( "お知らせカテゴリー", "arkhe" ),
		"singular_name" => esc_html__( "お知らせカテゴリー", "arkhe" ),
	];

	
	$args = [
		"label" => esc_html__( "お知らせカテゴリー", "arkhe" ),
		"labels" => $labels,
		"public" => true,
		"publicly_queryable" => true,
		"hierarchical" => false,
		"show_ui" => true,
		"show_in_menu" => true,
		"show_in_nav_menus" => true,
		"query_var" => true,
		"rewrite" => [ 'slug' => 'news-cat', 'with_front' => true, ],
		"show_admin_column" => false,
		"show_in_rest" => true,
		"show_tagcloud" => false,
		"rest_base" => "news-cat",
		"rest_controller_class" => "WP_REST_Terms_Controller",
		"rest_namespace" => "wp/v2",
		"show_in_quick_edit" => false,
		"sort" => false,
		"show_in_graphql" => false,
	];
	register_taxonomy( "news-cat", [ "news" ], $args );
}
add_action( 'init', 'cptui_register_my_taxes_news_cat' );