public ActionResult Index()
        {
            var model = new ReportViewModel();

            ViewBag.CacheDebug = GetCacheDebug();
            return View(model);
        }
        public ActionResult Index(ReportViewModel model)
        {
            if (!ModelState.IsValid)
                return View(model);

            var args = new ReportArgs
            {
                GroupId = model.GroupId.Value,
                AreForumsIncluded = model.AreForumsIncluded.Value
            };
            var report = _reportService.GetReportData(args);

            model.Results = report;

            ViewBag.CacheDebug = GetCacheDebug();
            return View(model);
        }