public void PostSingle([FromBody] VendingTransactionViewModel value)
        {
            VendingTransaction transaction = new VendingTransaction();

            transaction.UserId = value.UserId;
            transaction.Date   = value.Date;

            _db.AddVendingTransaction(transaction);
        }
        public void PostList([FromBody] VendingTransactionViewModel value)
        {
            VendingTransaction transaction = new VendingTransaction();

            transaction.UserId = value.UserId;
            transaction.Date   = value.Date;

            List <TransactionItem> transItems = new List <TransactionItem>();

            foreach (TransactionItemViewModel item in value.TransItems)
            {
                TransactionItem tranItem = new TransactionItem();
                tranItem.ProductId = item.ProductId;
                tranItem.SalePrice = item.SalePrice;
                transItems.Add(tranItem);
            }

            _db.AddTransactionSet(transaction, transItems);
        }