public IActionResult Index(IndexVM model)
{
model.Page = model.Page <= 0 ? 1 : model.Page;
model.ItemsPerPage = model.ItemsPerPage <= 0 ? 10 : model.ItemsPerPage;
ProductsRepository repo = new ProductsRepository();
Expression <Func <Product, bool> > filter = p => (
(model.Id == 0 || model.Id == p.Id) &&
(model.Price == "" || model.Price == null || p.CurrentPrice >= decimal.Parse(model.Price)) &&
(string.IsNullOrEmpty(model.Name) || p.Name.Contains(model.Name)));
model.Items = repo.GetAll(filter, model.Page, model.ItemsPerPage);
model.PagesCount = (int)Math.Ceiling((double)repo.Count(filter) / (double)model.ItemsPerPage);
return(View(model));
}