增
$this->create(); $ret = $this->save($data);
删
$ret = $this->deleteAll(array(‘user_id‘=>$user_id,‘stock_code‘=>$code));
改
查
$list = $this->find(‘all‘, array(‘conditions‘=>array(‘user_id‘=>$user_id)));
原文：https://www.cnblogs.com/xiaobiaomei/p/8973420.html