如何在 Laravel 刀片视图中进行算术运算？

Question

I want to do subtraction operations inside the Laravel blade view. I knew it was the wrong approach I need to do it from the controller, but can someone give me the proper solution to do it directly inside the blade view?

Note: I am a newbie to programming.

Here is my code

@if(!empty($receipt_details->total_due))
<tr>
    <th>
        Customer Old Due
    </th>
    <td>
        {{$receipt_details->all_due}} - {{$receipt_details->total_due}}
    </td>
</tr>
@endif

Answer 1

您可以像这样在同一个{{}}添加它

{{$receipt_details->all_due - $receipt_details->total_due}}

Answer 2

Optimal way for doing this will be to this in the DB query itself.

Here is the raw query sample

SELECT all_due, total_due, (all_due-total_due) as old_due FROM reciept_details;

Database engines are usually optimized to do these kinds of operations, and this will also save some resources on your application server.