在laravel中实现事务回滚的方法

之前做项目用到了事务回滚这个机制。我把代码贴出来多多交流给点意见，我用的是laravel 5.1bane版本的，

public static function createDeal($to_status, $params, $new_balance, $update = true)
  {
    \DB::beginTransaction();

    try {
      $update_order_status = \DB::table('wallet_order')
                  ->where('order_id', $params['order_id'])
                  ->update(['to_status' => $to_status, 'update_time' => $params['pay_time']]);
      if (!$update_order_status) {
        throw new \Exception("update order error");
      }

      $create_deal_status = \DB::table('wallet_deal')
                  ->insert($params);
      if (!$create_deal_status) {
        throw new \Exception("create deal error");

      }

      if ($update) {
        $update_manage_status = self::updateManage(['balance' => $new_balance, 'update_time' => $params['pay_time']], $params['from_user']);
        if (!$update_manage_status) {
          throw new \Exception("update manage error");
        }
      } else {
        $manage_params = [
          'user_id' => intval($params['from_user']),
          'balance' => $new_balance,
          'add_time' => $params['pay_time'],
          'update_time' => $params['pay_time'],
        ];
        $create_manage_status = self::createManage($manage_params);
        if (!$create_manage_status) {
          throw new \Exception("create manage error");
        }
      }
      \DB::commit();
    } catch (\Exception $e) {

		//异常处理进行回滚，自己想对应的业务
      \DB::rollback();
      $trouble_params = [
        'order_id' => $params['order_id'],
        'deal_id' => $params['deal_id'],
        'from_user' => $params['from_user'],
        'to_user' => $params['to_user'],
        'total_amount' => $params['total_amount'],
        'add_time' => $params['pay_time'],
        'type' => $params['type'],
        'to_status' => $to_status
      ];
      \DB::connection('mongodb')
        ->table('wallet_trouble')
        ->insert($trouble_params);
    } finally {
      self::createLog($params, $to_status);
    }
  }

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