public IActionResult Index(SortState sortState = SortState.TypeOfGsmAsc, int page = 1)
{
CostsFilterViewModel filter = HttpContext.Session.Get <CostsFilterViewModel>(filterKey);
if (filter == null)
{
filter = new CostsFilterViewModel {
PricePerLiter = 0, DateOfCostGsm = default
};
HttpContext.Session.Set(filterKey, filter);
}
string modelKey = $"{typeof(Costs).Name}-{page}-{sortState}-{filter.PricePerLiter}-{filter.DateOfCostGsm}";
if (!cache.TryGetValue(modelKey, out CostsViewModel model))
{
model = new CostsViewModel();
IQueryable <Costs> costs = GetSortedEntities(sortState, filter.PricePerLiter, filter.DateOfCostGsm);
int count = costs.Count();
int pageSize = 10;
model.PageViewModel = new PageViewModel(count, page, pageSize);
model.Costs = count == 0 ? new List <Costs>() : costs.Skip((model.PageViewModel.PageNumber - 1) * pageSize).Take(pageSize).ToList();
model.SortViewModel = new SortViewModel(sortState);
model.CostsFilterViewModel = filter;
cache.Set(modelKey, model);
}
return(View(model));
}
public IActionResult Index(CostsFilterViewModel filterModel, int page)
{
CostsFilterViewModel filter = HttpContext.Session.Get <CostsFilterViewModel>(filterKey);
if (filter != null)
{
filter.PricePerLiter = filterModel.PricePerLiter;
filter.DateOfCostGsm = filterModel.DateOfCostGsm;
HttpContext.Session.Remove(filterKey);
HttpContext.Session.Set(filterKey, filter);
}
return(RedirectToAction("Index", new { page }));
}
