附件本身与帖子相同。。。因此，您可以考虑为tham提供meta\\u值或为tham添加分类法。至于我，我总是用第一种方法。。。这是函数性如何工作的一个简单示例。。。

add_filter("attachment_fields_to_edit", "afields_to_edit",  10, 2);
add_filter("attachment_fields_to_save", "afields_to_save",  10, 2);

   function afields_to_save($post, $attachment){
          $parentPost = get_post($post[\'post_parent\']);       
          /*************************************************************
          // Roles
          *************************************************************/    

          if (isset($_POST[\'___attachments\'][$post[\'ID\']][\'type\']) 
              && trim($_POST[\'___attachments\'][$post[\'ID\']][\'type\']) != ""){

                 $type = $_POST[\'___attachments\'][$post[\'ID\']][\'type\'];
                 update_post_meta($post[\'ID\'],  \'_type\',  $type);

           } else {

               delete_post_meta($post[\'ID\'],  \'_type\');

           }
       return $post;
   }

   function afields_to_edit($form_fields, $post){

       $parentPost = get_post($post->post_parent);
      /***********************************************************************
       Roles
      ***********************************************************************/  
      $form_fields["roles"]["label"] = "File Role";
      $form_fields["roles"]["input"] = "html";

      $html .= "<select name=\'___attachments[".$post->ID."][type]\' style=\'width:95%;\'>";
      $html .= "<option value=\'\'>Default Role</option>";

      $roles = apply_filters(\'roles_sidebar\', array(), $post, $parentPost);


      if (is_array($roles) && count($roles) > 0){
          foreach($roles as $key=>$role){
              $html .= "<option value=\'".$key."\' ".$role[\'select\'].">".$role[\'name\']."</option>";
          }
      }
      $html .= "</select>";


      $form_fields["roles"]["html"]  = $html;
      return $form_fields;
 }