public ActionResult Save(NewLoanViewModel loanViewModel)
        {
            var loan = loanViewModel.NewLoan;
            var user = (User)HttpContext.Session["User"];

            //loan.IdUser = user.Id;

            if (loan.Id == 0)
            {
                AddLoan(loan);
            }
            else
            {
                UpdateLoan(loan);
            }

            return(RedirectToAction("LoanList"));
        }
        public ActionResult LoanList()
        {
            var viewModel = new NewLoanViewModel()
            {
                Loans = _context.Loans
                        .Include("Instrument")
                        .ToList(),
                NewLoan = new Loan()
                {
                    StartDate  = DateTime.Now,
                    FinishDate = DateTime.Now.AddDays(7)
                },
                Instruments = _context.Instruments.ToList(),
                Users       = _context.UsersS.ToList()
            };

            return(View(viewModel));
        }