Transactions Yii2中带有回调的Db事务
我有一个简单的代码,它在Yii2中使用DB事务,这会更新用户余额,并向用户余额历史记录中添加一条新记录Transactions Yii2中带有回调的Db事务,transactions,yii2,yii2-model,Transactions,Yii2,Yii2 Model,我有一个简单的代码,它在Yii2中使用DB事务,这会更新用户余额,并向用户余额历史记录中添加一条新记录 //User model public function changeBalance(UserBalanceHistory $balance) { $balance->balance = $this->balance; $balance->user_id = $this->id; $this->balance = $this->
//User model
public function changeBalance(UserBalanceHistory $balance)
{
$balance->balance = $this->balance;
$balance->user_id = $this->id;
$this->balance = $this->getBalance() + $balance->getDelta();
$transaction = Yii::$app->db->beginTransaction();
try {
if ($balance->save() && $this->save()) {
$transaction->commit();
return true;
}
} catch (Exception $e) {
Yii::error($e->getMessage());
}
$transaction->rollBack();
}
我应该经常使用DB事务来保存数据完整性。但处理上述DB事务需要大量代码行,因此我创建了以下函数来调用我的代码:
function dbTransaction(callable $callback)
{
$transaction = Yii::$app->db->beginTransaction();
try {
//if callback returns true than commit transaction
if (call_user_func($callback)) {
$transaction->commit();
Yii::trace('Transaction wrapper success');
}
} catch (\Exception $e) {
$transaction->rollBack();
throw $e;
}
$transaction->rollBack();
}
使用此功能,我可以处理如下事务:
//User model
public function changeBalance(UserBalanceHistory $balance)
{
dbTransaction(
function () use ($balance) {
$balance->balance = $this->balance;
$balance->user_id = $this->id;
$this->balance = $this->getBalance() + $balance->getDelta();
return $balance->save() && $this->save();
}
);
}
正如您所看到的,第二种方法非常适合使用事务。但在这一点上,我不确定
dbTransaction
函数是否正常工作?代码审查并注意哪些点是潜在问题。谢谢删除您的代码$transaction->rollBack()代码>在最后一行之前,因为此代码总是回滚并取消事务
function dbTransaction(callable $callback)
{
$transaction = Yii::$app->db->beginTransaction();
try {
//if callback returns true than commit transaction
if (call_user_func($callback)) {
$transaction->commit();
Yii::trace('Transaction wrapper success');
}
} catch (\Exception $e) {
$transaction->rollBack();
throw $e;
}
//$transaction->rollBack();
}
应该移到