function save()
{
if ($this->_updated) {
$name = $this->_object->name();
//修正表结构
$db = ORM_Model::db($name);
$id = $this->_object->id;
$db->query('INSERT INTO `%1$s` (`id`, `_extra`) VALUES (%2$d, "%3$s") ON DUPLICATE KEY UPDATE `_extra`="%3$s"', $name, $id, @json_encode($this->_items, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES));
$this->_updated = FALSE;
}
return $this;
}
