value ? $this->value->toIso8601String() : null; } public function set($value): bool { $value = ($value instanceof Carbon) ? $value : ($value ? Carbon::create($value) : null); return parent::set($value); } public static function applyFilter($query, $value) { $value = collect($value)->map(function($value) { return $value ? Carbon::create($value)->format('Y-m-d') : null; }); parent::applyFilter($query, $value->all()); } }