Method paginate does not exist Laravel 5.2 - php

Question

I get the following error when I try to paginate in Laravel 5.2.
BadMethodCallException in Macroable.php line 81: Method paginate does
not exist.
And code:
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);
I don't want to paginate until after the array has been sorted. How do I make this work?
Thanks, Philip

Answer 1

Here is a solution I found, borrowing code from someone else:
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()));
}
and add this code:
$gdprecords2 = $gdprecords->sortByDesc('bi_adult')->all();
$perPage = 25;
$sorted_gdprecords = self::paginate($gdprecords2, $perPage);
Thanks for your help. -Philip