public IActionResult Index(PaymentsFilterViewModel filterModel, int page)
{
PaymentsFilterViewModel filter = HttpContext.Session.Get <PaymentsFilterViewModel>(filterKey);
if (filter != null)
{
filter.Name = filterModel.Name;
filter.Date = filterModel.Date;
filter.Sum = filterModel.Sum;
HttpContext.Session.Remove(filterKey);
HttpContext.Session.Set(filterKey, filter);
}
return(RedirectToAction("Index", new { page }));
}
// GET: Payments
public async Task <IActionResult> Index(SortState sortState = SortState.PaymentsNameOfCoursesAsc, int page = 1)
{
PaymentsFilterViewModel filter = HttpContext.Session.Get <PaymentsFilterViewModel>(filterKey);
if (filter == null)
{
filter = new PaymentsFilterViewModel
{
Name = string.Empty,
Date = null,
Sum = null
};
HttpContext.Session.Set(filterKey, filter);
}
string key = $"{typeof(Payment).Name}-{page}-{sortState}-{filter.Name}-{filter.Date}-{filter.Sum}";
if (!_cache.TryGetValue(key, out PaymentViewModel model))
{
model = new PaymentViewModel();
IQueryable <Payment> payments = GetSortedPayments(sortState, filter.Name, filter.Date, filter.Sum);
int count = payments.Count();
model.PageViewModel = new PageViewModel(page, count, pageSize);
model.Payments = count == 0
? new List <Payment>()
: payments.Skip((model.PageViewModel.PageIndex - 1) * pageSize).Take(pageSize).ToList();
model.SortViewModel = new SortViewModel(sortState);
model.PaymentsFilterViewModel = filter;
_cache.Set(key, model);
}
return(View(model));
}