public function index(Request $request)
{
$start = $request->input('start', 0);
$length = $request->input('length', 5);
$draw = $request->input('draw', 1);
$banners = Banner::skip($start)->take($length)->orderBy('order');
echo json_encode(array("draw" => intval($draw), "recordsTotal" => intval(Banner::count()), "recordsFiltered" => intval(Banner::count()), "data" => $banners->get()->toArray()));
}
