/**
  * 检测分类是否存在
  * 
  * @param string $name
  * @param int $pid
  * @param int $id
  * @return bool 
  */
 public function name_exists($name, $pid, $id = 0)
 {
     //require_once '..\Action\baseAction.class.php';
     $base = new BaseAction();
     $where = "name='" . $name . "' AND pid='" . $pid . "' AND id<>'" . $id . "' AND tokenTall='" . $base->getTokenTall() . "'";
     $result = $this->where($where)->count('id');
     if ($result) {
         return true;
     } else {
         return false;
     }
 }