function set_post_types_admin_order($wp_query){ if(is_admin()){ $post_type = $wp_query->query['post_type']; if($post_type == 'カスタム投稿のスラッグ'){ $wp_query->set('orderby','date'); $wp_query->set('order','DESC'); } } } add_filter('pre_get_posts', 'set_post_types_admin_order');
![管理画面でのカスタム投稿一覧の並び順を日付降順に変更 | Mana Design Lab. | マナデザインラボ](https://cdn-ak-scissors.b.st-hatena.com/image/square/d2c4fe9743a6e4262ef1d2cde9aa677ffd11f2fb/height=288;version=1;width=512/https%3A%2F%2Fdevelop.mana-design.net%2Fwp-content%2Fuploads%2F2017%2F05%2Fset_post_types_admin_order.jpg)