Laravel Query Builder 遇到的非数字值

Question

我有一个工作功能，但现在突然提示错误。

at HandleExceptions->handleError(2, '遇到非数值', 'C:\xampp\htdocs\fdis-laravel\app\Receivable.php', 67, 数组（'receivable_payment_head_id' => null, 'total_receivable' => '936.341')) 在 Receivable.php 第 67 行

这是我使用 DB:Raw 的代码。

<?php

public static function updateLessPaymentHead($receivable_payment_head_id, $total_receivable)
{
    $payment_head = DB::table('receivables_payment_head')
        ->where('id', $receivable_payment_head_id)
        ->update(
            ['total_receivables' => DB::raw('total_receivables' - $total_receivable),
                'total_payment' => DB::raw('total_payment' - $total_receivable),
            ]);

    return $payment_head;
}

有没有办法可以解决 DB:raw 的非数字问题，或者我需要先将其转换为数字，然后再更新？我正在使用 Laravel 5.4 和 PHP 7.1。

Answer 1

您的 DB::raw 中有错误。

DB::raw('total_receivables' - $total_receivable) 本质上会尝试从字符串total_receivables 中减去$total_receivable 的值。但是，我相信您需要从列total_receivable 的值中减去它。然后你需要把它改成：

DB::raw('total_receivables - ' . $total_receivable )

请检查更新的代码：

<?php 


public static function updateLessPaymentHead($receivable_payment_head_id, $total_receivable)
{
    if(!is_numeric($receivable_payment_head_id) || !is_numeric($total_receivable)){

        return [];
    }

    $payment_head = DB::table('receivables_payment_head')
        ->where('id', $receivable_payment_head_id)
        ->update(
            [
                'total_receivables' => DB::raw('total_receivables  - ' . $total_receivable ),
                'total_payment' => DB::raw('total_payment - ' . $total_receivable),
            ]);

    return $payment_head;
}

Answer 2

在您的代码中：'total_receivables' - $total_receivable 和此处：'total_payment' - $total_receivable 您试图从字符串中减去一个数字，这是 php 7.1 错误。

您必须分别获得total_receivables 和total_receivables 并减去然后更新表格。

Answer 3

您需要将其转换为可以定义的数字格式 像这样的函数参数数据类型

public static function updateLessPaymentHead(int $receivable_payment_head_id, int $total_receivable) 
    {
        $payment_head = DB::table('receivables_payment_head')
            ->where('id', $receivable_payment_head_id)
            ->update(
                ['total_receivables' => DB::raw('total_receivables' - $total_receivable),
                    'total_payment' => DB::raw('total_payment' - $total_receivable),
                ]);

        return $payment_head;
}