public IActionResult Create(Survey survey)
 {
     if (ModelState.IsValid)
     {
         var  username = User.FindFirstValue(ClaimTypes.Name);
         User user     = userService.GetUserByUsername(username);
         surveyService.AddSurvey(survey, user);
         userSurveyService.AddUserSurvey(user, survey);
         return(RedirectToAction(nameof(Index)));
     }
     return(View());
 }