/**
* @param Collection $collection
* @param $orderBy
* @param string $orderDir
* @param null $orderManual
* @return array
* @internal
*/
public function sortCollection(Collection $collection, $orderBy, $orderDir = 'asc', $orderManual = null)
{
$items = $collection->toArray();
if (!$items) {
return [];
}
$lookup = md5(json_encode($items));
if (!isset($this->sort[$lookup][$orderBy])) {
$this->buildSort($lookup, $items, $orderBy, $orderManual);
}
$sort = $this->sort[$lookup][$orderBy];
if ($orderDir != 'asc') {
$sort = array_reverse($sort);
}
return $sort;
}