How can i avoid duplication of homework answers. See my controller below. I only want students to post an answer for a specific homework just once. Which means after posting, they will be blocked from adding another answer. How can i achieve this?
public function create_homeworkanswer($id){
//
}
public function store(Request $request)
{
$homeworkanswer = new \App\HomeworkAnswer();
$homeworkanswer->date = $request->date;
$homeworkanswer->student_id = get_studentid();
$homeworkanswer->homework_id = $request->route_id;
$homeworkanswer->myanswer = $request->myanswer;
$homeworkanswer->save();
Just check before-hand if they already created an object right?
public function store(Request $request)
{
$exists = \App\HomeworkAnswer::where('student_id', get_studentid())
->where('homework_id', $request->route_id)
->exists();
if ($exists) {
// You can do here what you want
return redirect()->route('not-allowed-route');
}
$homeworkanswer = new \App\HomeworkAnswer();
$homeworkanswer->date = $request->date;
$homeworkanswer->student_id = get_studentid();
$homeworkanswer->homework_id = $request->route_id;
$homeworkanswer->myanswer = $request->myanswer;
$homeworkanswer->save();
}
