public async Task <IActionResult> Put(int id, [FromBody] Models.Quiz quiz)
        {
            if (id != quiz.ID)
            {
                return(BadRequest());
            }
            _context.Entry(quiz).State = EntityState.Modified;
            await _context.SaveChangesAsync();

            return(Ok(quiz));
        }
        public async Task <IActionResult> Post([FromBody] Models.Quiz quiz)
        {
            var userId = HttpContext.User.Claims.First().Value;

            quiz.OwnerId = userId;
            _context.Quizzes.
            Add(quiz);
            await _context.SaveChangesAsync();

            return(Ok(quiz));
        }