[英]Using Eloquent ORM to perform MYSQL transactions
A few weeks back I had an interesting inquiry regarding the handling/processing of an inventory/payment system and I've decided to implement the method of the accepted answer being it was both the most simplistic and more likely the most efficient solution given. 几周前,我对库存/付款系统的处理/处理提出了一个有趣的询问 ,我决定实施公认的方法,因为它既是最简单的解决方案,也可能是最有效的解决方案。
I'm using Laravel's Eloquent ORM in conjunction with the Slim Framework , and I'd like to perform a MYSQL transaction
with a specific query regarding the decrementation of the stock of items within an inventory system. 我将Laravel的Eloquent ORM与Slim Framework结合使用,我想执行一个MYSQL
transaction
,并执行一个特定查询,该查询涉及库存系统中物品存量的减少。 The code that I'd like to use a transaction
for is the following: 我要用于
transaction
的代码如下:
// decrement each items stock following successful payment
try {
// here is where i'd like to perform a transaction, rather than simple eloquent query
foreach ($this->c->basket->all() as $product) {
$product->decrement('stock', $product->quantity);
}
} catch (Exception $e) {
// if error is caused during decremention of item(s),
// handle accordingly
}
Now being that I am using Slim as aforementioned, I believe I don't have native access to the Laravel DB Facade which to my knowledge handles transactions. 现在,如上所述,我正在使用Slim,我相信我没有对Laravel DB Facade的本机访问, 据我所知, Laravel DB Facade处理事务。
Suggestions? 建议?
SIDE-NOTE 边注
My DB Connection is set globally in an initialization
file like so: 我的数据库连接是在
initialization
文件中全局设置的,如下所示:
$capsule = new Illuminate\Database\Capsule\Manager();
$capsule->addConnection($container['settings']['db']);
$capsule->setAsGlobal();
$capsule->bootEloquent();
You could get the Capsule object from the slim container and then just use the Connection object to start and commit a database transaction. 您可以从slim容器中获取Capsule对象,然后仅使用Connection对象启动并提交数据库事务。 If an exception occurs you just need to call the
rollBack()
method. 如果发生异常,
rollBack()
需要调用rollBack()
方法即可。
Pseudo code: 伪代码:
$capsule = new \Illuminate\Database\Capsule\Manager();
// Get a registered connection instance.
$connection = $capsule->getConnection();
// begin a transaction manually
$connection->beginTransaction();
try {
// do something...
$product->decrement('stock', $product->quantity);
// commit a transaction via the commit method
$connection->commit();
} catch (Exception $e) {
// you can rollback the transaction via the rollBack method
$connection->rollBack();
}
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