public ActionResult <dynamic> Post([FromBody] SLI sli)
        {
            var newSli = new ShoppingListItem
            {
                Text = sli.Text
            };

            _context.Add(newSli);

            _context.SaveChanges();

            return(newSli);
        }
        public ActionResult <dynamic> Post([FromBody] WMI wmi)
        {
            var newWmi = new WeeklyMenuItem
            {
                Date   = wmi.Date,
                Recipe = _context.Set <Recipe>().Find(wmi.Recipe)
            };

            _context.Add(newWmi);

            _context.SaveChanges();

            return(newWmi);
        }