public function init($table, $data = array(), $isNew = true)
    {
        $class = $this->getRecordClass($table);
        return new $class(array(
            'wei'       => $this->wei,
            'db'        => $this,
            'table'     => $table,
            'isNew'     => $isNew,
            'data'      => $data,
        ));
    }