如何在默认情况下启用菜单屏幕选项CSS类？

Question

我想在默认情况下启用菜单屏幕选项CSS classes。
我应该用什么代码来实现这个目标？

Answer 1

您可以添加一个过滤器到get_user_option_{$option}其中{$option}是在wp_nav_menu_setup()函数中检查的用户元键managenav-menuscolumnshidden。如果元值是false，这是用户第一次登录，它将设置默认隐藏选项。如果你勾住这个，你可以设置你自己的默认值，并确保它永不返回false。

// add a filter to catch unset hidden options 
add_filter('get_user_option_managenav-menuscolumnshidden', 'my_default_menuscolumnshidden', 99, 3); 
function my_default_menuscolumnshidden($result, $option, $user_id){ 
    if($option == "managenav-menuscolumnshidden"){ 
     // remove this function to prevent a loop 
     remove_filter('get_user_option_managenav-menuscolumnshidden', 'my_default_menuscolumnshidden', 99); 
     // check if it is false (first login) 
     $result = get_user_option($option); 
     if (false === $result) { 
      // update with your own defaults (omits CSS from the hidden options) 
      $result = array(0 => 'link-target', 1 => 'xfn', 2 => 'description'); 
      update_user_option($user->ID, 'managenav-menuscolumnshidden', 
       $result, 
       true); 
     } 
     // re-add filter in case it gets called again 
     add_filter('get_user_option_managenav-menuscolumnshidden', 'my_default_menuscolumnshidden', 99); 
    } 
    // if this was false before, now it is set to custom defaults 
    return $result; 
}