public ArticlesController(UsenetContext context)
        {
            _context = context;

            if (_context.Articles.Count() == 0)
            {
                _context.Articles.Add(new Article {
                    GroupId = 1, Subject = "foo"
                });
                _context.Articles.Add(new Article {
                    GroupId = 1, Subject = "bar"
                });
                _context.SaveChanges();
            }
        }
        public GroupsController(UsenetContext context)
        {
            _context = context;

            if (_context.Groups.Count() == 0)
            {
                _context.Groups.Add(new Group {
                    Name = "Group1"
                });
                _context.Groups.Add(new Group {
                    Name = "Group2"
                });
                _context.SaveChanges();
            }
        }