我有一个插件设置页面，用户可以在其中打开或关闭自定义帖子类型。当插件初始化时，我会检查这个设置，看看是否应该注册自定义内容类型。这个registerPostType() 方法调用init 措施：

class CPT {
  private $enabled = false;

  public function __construct()
  {
    // Handle form submission.
    add_action(\'init\', array($this, \'checkFormSubmission\'), 8);

    // Load settings.
    $settings = get_option(\'cpt_settings\');
    $this->enabled = $settings[\'enabled\'];

    // Add menu.
    add_action(\'admin_menu\', array($this, \'registerMenu\'));

    // Register custom post type if enabled.
    if ($this->enabled) {
        add_action(\'init\', array($this, \'registerPostType\'));
    }
  }

  public function registerMenu()
  {
    add_submenu_page(
        \'options-general.php\',
        __(\'CPT Settings\', \'cpt\'),
        __(\'CPT Settings\', \'cpt\'),
        \'manage_options\',
        \'cpt\',
        array($this, \'renderSettingsPage\')
    );
  }

  public function registerPostType()
  {
    $args = array(
        \'labels\' => array(
          \'name\' => \'CPT\',
        ),
        \'public\' => true,
        \'publicly_queryable\' => true,
        \'show_ui\' => true,
        \'show_in_menu\' => true,
        \'query_var\' => true,
        \'capability_type\' => \'post\',
        \'has_archive\' => true,
        \'hierarchical\' => false,
        \'menu_position\' => null,
        \'supports\' => array(\'title\', \'editor\', \'author\', \'thumbnail\', \'excerpt\')
    );
    register_post_type(\'sample-cpt\',  $args);
  }

  public function checkFormSubmission()
  {
    // Validate so user has correct privileges.
    if (!current_user_can(\'manage_options\')) {
      die(__(\'You are not allowed to perform this action.\', \'cpt\'));
    }

    // Check if settings form is submitted.
    if (filter_input(INPUT_POST, \'cpt-settings\', FILTER_SANITIZE_STRING)) {
      // Verify nonce and referer.
      check_admin_referer(\'cpt-settings-action\', \'cpt-settings-nonce\');
      $this->enabled = filter_input(
          INPUT_POST,
          \'cpt-enable\',
          FILTER_VALIDATE_BOOLEAN
      );
      update_option(\'cpt_settings\', array(\'enabled\' => $this->enabled));
    }
  }

  public function renderSettingsPage()
  {
    require_once plugin_dir_path(__FILE__ ) . \'/admin/templates/settings-page.php\';
  }
}

new CPT();

这与预期的一样，但问题是，当我保存表单时，自定义帖子类型的菜单项在我重新加载页面之前不会更新。显然，这是因为菜单已经创建。

我的第一个想法是，我没有使用正确的挂钩来处理表单提交和注册我的自定义帖子，或者应该以更高的优先级添加挂钩？

我试着用wp_redirect() 保存设置后，我无法设置任何标题，因为输出已经开始。

有人能解释一下，在保存插件设置时，我如何更新自定义帖子类型的菜单项吗？

if (!$this->enabled) return;

// Register custom post type if enabled.
if ($this->enabled) {
    add_action(\'init\', array($this, \'registerPostType\'));
}

// Register custom post type if enabled.
add_action(\'init\', array($this, \'registerPostType\'));