【问题标题】：Laravel5 How to Update latest data and get true accumulative sum to databaseLaravel 5 如何更新最新数据并获取数据库的真实累积和
【发布时间】：2017-10-30 09:38:04
【问题描述】：

你好，我想问一些我两天前无法解决的问题，当我将数据导入数据库时遇到问题

示例：

我的 csv 文件中有这样的条目，我将导入

||===============================================|| || 批发商||产品 ||周_01 ||周_02 || ||===============================================|| ||迈克尔 ||番茄 || 90.000 || 60.000 || ||迈克尔 ||苹果|| 50.000 || 50.000 || ||桑蒂 ||芒果 || 23.000 || 32.000 || ||===============================================||

当我导入那个文件时，一切正常，我在数据库中检查它会是这样的

||================================================= ====================================|| || 批发商||目标 ||期间 ||总交易 ||返利 || total_voucher || ||================================================= ====================================|| ||迈克尔 || 100.000 || 01.2017 || 140.000 || 2% || 2800 || ||迈克尔 || 100.000 || 02.2017 || 250.000 || 2% || 2200 || ||桑蒂 || 100.000 || 01.2017 || 23.000 || 2% || 0 || ||桑蒂 || 100.000 || 02.2017 || 55.000 || 2% || 0 || ||================================================= ====================================||

但是当我像这样向我的文件添加新条目时

我导入文件，然后数据库出现错误

||================================================= ======================================|| || 批发商||目标 ||期间 ||总交易 ||返利 || total_voucher || ||================================================= ======================================|| ||迈克尔 || 100.000 || 01.2017 || 140.000 || 2% || 2800 || ||迈克尔 || 100.000 || 02.2017 || 250.000 || 2% || 2200 || ||桑蒂 || 100.000 || 01.2017 || 23.000 || 2% || 0 || ||桑蒂 || 100.000 || 02.2017 || 55.000 || 2% || 0 || ||桑蒂 || 100.000 || 01.2017 || 34.000 || 2% || 0 ||--> 这个total_transaction是正确的，基于总和23.000 + 11.000 ||桑蒂 || 100.000 || 02.2017 || 78.000 || 2% || 0 ||--> 但这不正确 ||================================================= ======================================||

一定是这样的：

||================================================= ======================================|| || 批发商||目标 ||期间 ||总交易 ||返利 || total_voucher || ||================================================= ======================================|| ||迈克尔 || 100.000 || 01.2017 || 140.000 || 2% || 2800 || ||迈克尔 || 100.000 || 02.2017 || 250.000 || 2% || 2200 || ||桑蒂 || 100.000 || 01.2017 || 34.000 || 2% || 0 ||--> sum week_01 ||桑蒂 || 100.000 || 02.2017 || 99.000 || 2% || 0 ||--> sum week_01+sum week_02 ||================================================= ======================================||

这是控制器中的代码：

$columns = Schema::getColumnListing('leveredge');
$now = $request->input('week');
for($x = 13; $x <= $now + 12; $x++)
{
    $total_transaction = Leveredge::groupBy('distributor', 'outlet')->selectRaw('distributor, outlet, sum(week_'. str_pad($x-12, 2, '0', STR_PAD_LEFT) .') AS sum')->get();
    $y = 0;

    foreach($total_transaction as $row)
    {
        $wholesaler_id = $row->outlet;

        $wholesaler = Wholesaler::find($wholesaler_id);


        $target = '';

        if( $wholesaler && ($wholesaler->total_target != -1 && $wholesaler->q1 != -1 && $wholesaler->q2 != -1 && $wholesaler->q3 != -1 && $wholesaler->q4 != -1) )
        {
            $wholesaler_type = WholesalerType::find($wholesaler->wholesaler_type_id);
            $week = substr($columns[$x], -2);
            if($week <= 13){
                $target = is_null($wholesaler->q1)? 0 : $wholesaler->q1;
            }else if($week <= 26 && $week >= 14){
                $target = is_null($wholesaler->q2)? 0 : $wholesaler->q2;
            }else if($week <= 39 && $week >= 27){
                $target = is_null($wholesaler->q3)? 0 : $wholesaler->q3;
            }else if($week >= 28){
                $target = is_null($wholesaler->q4)? 0 : $wholesaler->q4;
            }else{
                $target = 0;
            }

            $match = ['wholesaler_id' => $wholesaler_id, 'week' => str_pad($week-1, 2, '0', STR_PAD_LEFT) . '.' . date("Y")];
            $last_transaction = Voucher::where($match)->first();

            $curr_sum = $row->sum;
            $sum = $row->sum;

            $total_voucher = 0;
            if(!in_array($week, [1, 14, 27, 52])){
                $sum += $last_transaction->total_transaction;
                if($sum >= $target){
                    if($last_transaction->total_transaction == $sum){
                        $total_voucher = 0;
                    }else if($last_transaction->total_voucher == 0){
                        $total_voucher = ($wholesaler_type->rebate_percentage/100 * $sum);
                    }else{
                        $total_voucher = ($wholesaler_type->rebate_percentage/100 * $curr_sum);
                    }
                }
            }else{
                if($sum >= $target){
                    $total_voucher = ($wholesaler_type->rebate_percentage/100 * $curr_sum);
                }else{
                    $total_voucher = 0;
                }
            }


           $voucher = Voucher::firstOrCreate(array(
                'wholesaler_id' => $wholesaler_id,
                'target' => $target,
                'week' => $week . '.' . date("Y"),
                'total_transaction' => $sum,
                'rebate' => $wholesaler_type->rebate_percentage,
                'total_voucher' => $total_voucher
            ));

            $leveredgenotification = LeveredgeNotification::firstOrCreate(array(
                'wholesaler_id'    => $voucher->wholesaler_id,
                'value'            => $voucher->total_voucher,
                'target'           => '0',
                'type'             => 'cashback_voucher',
                'status'           => 99,
            ));
        }
        $y++;
    }
}

我希望你能帮助解决这个问题，非常感谢。
祝你有美好的一天。

【问题讨论】：

您可能需要区分 wholesaler 和 period 以删除重复记录
我希望 total_transaction 列是正确的累积和并更新数据库，而不是创建:)
to not get duplicated data
嗯，对不起，也许我必须更改标题

标签： sql database postgresql laravel eloquent

【解决方案1】：

在您的查询中使用->groupBy('wholesaler')。

示例：

Wholesaler::find($wholesaler_id)->groupBy('wholesaler');

【讨论】：

导入时会出现错误：Undefined property: Illuminate\Database\Eloquent\Builder::$total_target
@FaisalHilmi 你能告诉我们发生错误的那一行吗？
@RahmaniSaif 没有错误，但问题是它在数据库中创建新条目，我想更新 :)

【解决方案2】：

终于解决了：
我将 firstorCreate 修改为这样：

$voucher = Voucher::firstOrNew(array(
                            'wholesaler_id' => $wholesaler_id,
                            'target' => $target,
                            'week' => $week . '.' . date("Y")
                        ));
                       $voucher->wholesaler_id = $wholesaler_id;
                       $voucher->target = $target;
                       $voucher->week = $week . '.' . date("Y");
                       $voucher->total_transaction = $sum;
                       $voucher->rebate = $wholesaler_type->rebate_percentage;
                       $voucher->total_voucher = $total_voucher;
                       $voucher->save();

谢谢大家

【讨论】：