public function update($id, Request $request)
{
$question = Question::findOrFail($id);
foreach ($request->choices as $choice) {
$choiceModels[] = new Choice(['choice_text' => $choice]);
}
$data = $request->all();
$data["user_id"] = \Auth::user()->id;
Choice::where("question_id", $id)->delete();
$question->update($data);
$question->choices()->saveMany($choiceModels);
session()->flash('flash_msg', 'You have successfully added a poll.');
return redirect('/');
}