public function delDocument($Model, $ids)
 {
     //如果是文档  则自动删除积分
     if ($Model == 'Document') {
         $map['id'] = array('in', $ids);
         $map['usertype'] = 'user';
         $idlist = M('Document')->where($map)->field('id,title,uid,usertype')->select();
         foreach ($idlist as $key => $value) {
             $info = array();
             $info = api('Document/get_detail', array('id' => $value['id']));
             //管理员删除  扣除积分
             Credits::ag_cms_topics_delete($value['uid'], $info['category_id'], '管理员一条内容,ID:' . $value['id']);
         }
     }
     return true;
 }