/**
* 更新$id对应的记录
* @param $id
* @param $data
* @return int
*/
public function update($id = null, $data = array())
{
if (is_array($data) && !empty($data)) {
$this->fill($data);
}
if ($id !== null) {
$this->_id = $id;
}
$pk = $this->_table->getPrimaryKey();
unset($this->_row[$pk]);
$cond = $this->_table->getCondition();
$cond->add($pk, $this->_id);
return $this->_table->update($this->_row);
}
