public ActionResult Create(FollowUpAdd newItem)
        {
            if (ModelState.IsValid)
            {
                FollowUpBase addedItem = m.AddFollowUp(newItem);

                return(RedirectToAction("Index"));
            }
            else
            {
                return(RedirectToAction("Create"));
            }
        }
        public ActionResult Edit(int id, FollowUpEdit editItem)
        {
            if (ModelState.IsValid)
            {
                FollowUpBase editedItem = m.EditFollowUp(editItem);

                if (editedItem == null)
                {
                    return(RedirectToAction("index"));
                }
                else
                {
                    return(RedirectToAction("details", new { id = editedItem.Id }));
                }
            }
            else
            {
                return(RedirectToAction("index"));
            }
        }