方法分页不存在 Laravel 5.2 - Method paginate does not exist Laravel 5.2

Method paginate does not exist Laravel 5.2

本文关键字：Laravel 不存在分页方法 | 更新日期: 2023-09-27

当我尝试在 Laravel 5.2 中分页时出现以下错误。

BadMethodCallException in Macroable.php第81行：方法分页不存在。

和代码：

Illuminate'Contracts'Pagination'Paginator;
...
       $count = 0;
        $gdprecords = Gdprecord::all();
        foreach($gdprecords as $gdprecord) {
            $count++;
            $Pa = $gdprecord->adultpopulation;
            $Pc = $gdprecord->childpopulation;
            $P = $Pa + $Pc;  // total population
            $T = ($gdprecord->gdpcapita * $P) * $gdpratio;  // basic income for country 
            if($bi_ratio == 0) { 
                $gdprecord->bi_adult = round($T / $Pa, 2);
            } else {
                $gdprecord->bi_adult = round($T / ($Pa + ($Pc / $bi_ratio)), 2);
            }
            $gdprecord->bi_adult_monthly = round($gdprecord->bi_adult / 12, 2);
            $gdprecord->bi_adult_daily = round($gdprecord->bi_adult / 365, 2);
            if($bi_ratio == 0) {
                $gdprecord->bi_child = 0;
            } else {
                $gdprecord->bi_child = round($gdprecord->bi_adult / $bi_ratio, 2);
            }
            $gdprecord->bi_child_monthly = round($gdprecord->bi_child / 12, 2);
            $gdprecord->bi_child_daily = round($gdprecord->bi_child / 365, 2);                    
        }
        $sorted_gdprecords = $gdprecords->sortByDesc('bi_adult')->paginate(25);

在对数组进行排序之前，我不想分页。我该如何完成这项工作？

谢谢，菲利普

这是我找到的一个解决方案，借用了其他人的代码：

    public function paginate($items,$perPage)
    {
        $pageStart = 'Request::get('page', 1);
        // Start displaying items from this number;
        $offSet = ($pageStart * $perPage) - $perPage; 
        // Get only the items you need using array_slice
        $itemsForCurrentPage = array_slice($items, $offSet, $perPage, true);
        return new LengthAwarePaginator($itemsForCurrentPage, count($items), $perPage,Paginator::resolveCurrentPage(), array('path' => Paginator::resolveCurrentPath()));
    }

并添加此代码：

  $gdprecords2 = $gdprecords->sortByDesc('bi_adult')->all();
  $perPage = 25;
  $sorted_gdprecords = self::paginate($gdprecords2, $perPage);

谢谢你的帮助。 -菲利普