public IActionResult Create(SubmissionBindingModel submissionBindingModel)
        {
            var problemId = this.Request.FormData["ProblemId"].FirstOrDefault();
            var userId    = this.User.Id;

            this.sumbissionService.CreateSubmission(submissionBindingModel.Code, problemId, userId);

            return(this.Redirect("/"));
        }
        public IActionResult Create(SubmissionBindingModel model)
        {
            if (!this.ModelState.IsValid)
            {
                return(this.Redirect("/Submissions/Create"));
            }

            this.submissionService.CreateSubmissionAndAddToProblem(model.Code, model.Id, this.User.Id);

            return(this.Redirect("/"));
        }