public IActionResult Index()
        {
            var model = new DiscussionsIndexViewModel();

            model.Discussions = logic.GetAll();

            return(View(model));
        }
        public IActionResult Index(DiscussionsIndexViewModel model)
        {
            if (!ModelState.IsValid)
            {
                return(View(model));
            }

            model.Discussions = logic.GetAllByFilter(model.FilterInput);

            return(View(model));
        }