public object Set(string arg)
{
DataItem item = DataItem.Make(arg);
if (item == null)
{
return("ERR: " + arg);
}
string id = item.ID;
DataItem old = _context.DataItems.FirstOrDefault(t => t.ID == id);
if (old == null)
{
_context.DataItems.Add(item);
_context.SaveChanges();
return(new ObjectResult(item.SetResult("ADDED")));
}
else
{
item.CopyTo(old);
_context.SaveChanges();
return(new ObjectResult(old.SetResult("UPDATED")));
}
}