Laravel 按附加字段排序

Question

我知道了：

$companies = Company::all();

foreach($companies as $company)
{
    $company->distance = distance(); // a float type. My custom field.
}

$companies->sort(function ($a, $b){
            return strcmp($a->distance, $b->distance);
        })->values()->all();

我也尝试过： $companies->sortBy('distance')

还有其他一些无效的方法。

有人知道如何完成这个吗？谢谢

Answer 1

尝试以下代码：

$companies = Company::all()->toArray();

foreach($companies as $key => $company)
{
     $distance[$key] = $company["distance"] = distance();
}

//now do a multisort on your distance array

 array_multisort($distance, SORT_ASC, $data);

有关详细信息，请参阅 http://php.net/manual/en/function.array-multisort.php

Answer 2

好的，我明白了。

$sorted = $companies->sortBy('distance');
$sorted->values()->all();

$companies = $sorted;

我猜它在排序时需要一个缓冲区。

Laravel 按附加字段排序

Laravel sort on additional field

php

laravel

collections

eloquent

usort