public ActionResult AddComplaint(complaint model)
        {
            var user    = UserManager.FindById(User.Identity.GetUserId());
            var student = db.Students.Where(c => c.UserId == user.Id).SingleOrDefault();

            db.complaints.Add(model);
            var StudentCompliantRelation = new StudentcomplaintRelation
            {
                complaintId = model.complaintId,
                StudentId   = student.StudentId
            };

            db.StudentcomplaintRelations.Add(StudentCompliantRelation);
            db.SaveChanges();
            return(RedirectToAction("CompliantsList"));
        }
        public ActionResult AddComplaint(int id, complaint model)
        {
            var complaint = new complaint
            {
                Date   = model.Date,
                Detail = model.Detail
            };

            db.complaints.Add(complaint);
            var StudentCompliantRelation = new StudentcomplaintRelation
            {
                complaintId = complaint.complaintId,
                StudentId   = id
            };

            db.StudentcomplaintRelations.Add(StudentCompliantRelation);
            db.SaveChanges();
            return(RedirectToAction("StudentsList5"));
        }