public function index() {

       
    if ($this->member['groupid']) { 
       $where = " uid in (select uid from ".\Phpcmf\Service::M()->dbprefix('member_group_index')." where gid in(".implode(",", $this->member['groupid'])."))";

       if ($this->init['where_list']) {
           $this->init['where_list'].= ' AND '.$where;
           // 考虑到父类也许有可能会自带条件，防止被覆盖默认条件，所以追加一个 AND
       } else {
           $this->init['where_list'] = $where;
       }
    }
   $this->_Admin_List();
}