CapRaffle.Controllers.CategoryController.Rules C# (CSharp) Метод

        public PartialViewResult Rules(int categoryId)
        {
            var rulesforevent = repository.GetRulesForCategory(categoryId);
            var available = repository.AvailableRules.ToList();

            available.RemoveAll(x => rulesforevent.Exists(y => y.Rule.RuleId == x.RuleId));
            var model = new RulesViewModel
            {
                AvailableRules = available,
                RulesForEvent = rulesforevent,
                CategoryId = categoryId
            };

            return PartialView("_Rules", model);
        }