Question

我有一个正在运行的功能，但突然它现在提示错误。

在HandleExceptions-> handleError（2，'遇到一个非数字值'， 'C：\ xampp \ htdocs \ fdis-laravel \ app \ Receivable.php'，67， array（'receivable_payment_head_id'=> null，'total_receivable'=> '936.341'））在Receivable.php 67行中

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;
}

有没有一种方法可以解决DB：raw的非数字问题，还是在更新之前需要先将其转换为数字？我正在使用Laravel 5.4和PHP 7.1。

Answer 1

您的DB :: raw中存在错误。

DB::raw('total_receivables' - $total_receivable)实际上将尝试从字符串$total_receivable中减去total_receivables的值。但是，我相信您需要从total_receivable列的值中对其进行子跟踪。然后，您需要将其更改为：

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：storage.objects.create和此处：'total_receivables' - $total_receivable，您尝试从字符串中减去数字，这是php 7.1错误。

您必须分别获取'total_payment' - $total_receivable和total_receivables，然后减去然后更新表格。

Answer 3

您需要将其转换为数字格式才能定义像这样的功能参数数据类型

const isInvalidInput = val => parseFloat(val) < 0.5 || isNaN(val);

Laravel查询生成器遇到非数值

3 个答案: