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