public function update(Request $request, Slider $slider)
{
$data = $request->all();
if (!$data['start_date']) {
$data['start_date'] = NULL;
}
if (!$data['end_date']) {
$data['end_date'] = NULL;
}
$this->sliderRepository->update($slider, $data);
$this->flashSuccess('edit');
return redirect()->route('admin::sliders.index');
}
