BookStack\Services\AttachmentService::saveNewFromLink PHP Method

    public function saveNewFromLink($name, $link, $page_id)
    {
        $largestExistingOrder = Attachment::where('uploaded_to', '=', $page_id)->max('order');
        return Attachment::forceCreate(['name' => $name, 'path' => $link, 'external' => true, 'extension' => '', 'uploaded_to' => $page_id, 'created_by' => user()->id, 'updated_by' => user()->id, 'order' => $largestExistingOrder + 1]);
    }