Yii2 MongoDb 开启事务 Demo案例

提醒：本文最后更新于 2021-09-26 18:24，文中所关联的信息可能已发生改变，请知悉！

众所周知 Yii2 的 MongoDB 组件太老了 不支持新版本的事务操作和其他特性

现在当前文章来介绍一下 关于事务的开启和使用案例 (事务需要集群)

/**
     * 开始事务
     * @return \MongoDB\Driver\Session
     * @throws Exception
     */    public static function startTransaction()
    {if (is_null(static::getDb()->getDatabase()->connection->manager)) {static::getDb()->getDatabase()->connection->open();
            if (is_null(static::getDb()->getDatabase()->connection->manager)) {throw new Exception('Please Connect Mongo');
            }
        }

        $session = static::getDb()->getDatabase()->connection->manager->startSession();
        $session->startTransaction([
            'readConcern' => new \MongoDB\Driver\ReadConcern("snapshot"),
            'writeConcern' => new \MongoDB\Driver\WriteConcern(\MongoDB\Driver\WriteConcern::MAJORITY),
        ]);

        return $session;
    }

 案例:
       $session = Order::startTransaction();
        try {$model = new Order();
            $result = $model->save(null,['session' => $session])
            if (!$result) {throw new UserException('领取失败');
            }
            $session->commitTransaction();} catch (\Exception $e) {$session->abortTransaction();}