遇到非数字值 Laravel 查询生成器

Question

我有一个可以工作的功能，但是现在突然提示错误。

at HandleExceptions->handleError(2, 'A non-numeric value encountered', 'C:\xampp\htdocs\fdis-laravel\app\Receivable.php', 67, array('receivable_payment_head_id' => null, 'total_receivable' => '936.341')) in Receivable.php line 67

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;
}

有什么方法可以解决 DB:raw 的非数字问题，还是我需要先将其转换为数字再更新？我正在使用 Laravel 5.4 和 PHP 7.1.

Answer 1

You need to convert that in numeric format for that you can define function parameter datatype like this

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;
}

Answer 2

在您的代码中：'total_receivables' - $total_receivable 和此处：'total_payment' - $total_receivable 您正试图从字符串中减去一个数字，这是一个 php 7.1 错误。

您必须分别获取 total_receivables 和 total_receivables 并相减然后更新 table。

Answer 3

您的 DB::raw 有误。

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 total_receivable 列的值中减去它。然后您需要将其更改为：

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

请检查更新后的代码：

<?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;
}

遇到非数字值 Laravel 查询生成器

A non-numeric value encountered Laravel Query Builder

php

laravel

laravel-query-builder

laravel-5.4