我有以下自定义帖子类型：

<?php

function university_post_types() {

  // Professor Post Type
  register_post_type(\'professor\', array(
    \'supports\' => array(\'title\', \'editor\', \'thumbnail\', \'excerpt\'),
    \'public\' => true,
    \'labels\' => array(
      \'name\' => \'Professors\',
      \'add_new_item\' => \'Add New Professor\',
      \'edit_item\' => \'Edit Professor\',
      \'all_items\' => \'All Professors\',
      \'singular_name\' => \'Professor\'
    ),
    \'menu_icon\' => \'dashicons-welcome-learn-more\'
  ));

}

add_action(\'init\', \'university_post_types\');

在我的functions.php 文件我正在注册以下主题支持：

function university_features() {
  add_theme_support(\'title-tag\');
  add_theme_support(\'post-thumbnails\');
  add_image_size(\'professorLandscape\', 400, 260, true);
  add_image_size(\'professorPortrait\', 480, 650, true);
}

add_action(\'after_setup_theme\', \'university_features\');

我的问题是不，featured-image 框显示在我的自定义帖子类型中。

有什么建议我做错了什么？

感谢您的回复！

add_theme_support( \'post-thumbnails\', array( \'post\',\'professor\' ) );