public RedirectToRouteResult Filter(ProductFilter thefilter, string ProducerStr = null)
{
TempData["filter"] = thefilter;
return RedirectToAction("ShowListPage", "MusicInstruments", new
{
category = thefilter.category
});
}
//Задать начальные значения фильтра
private ProductFilter InitializeFilter(int cat)
{
IEnumerable<Product> products = repository.musicInstruments //товары из выбраной категррии
.Where(vm => cat == 0 || vm.Category_Id == cat).ToList();
ProductFilter filter = new ProductFilter()
{
category = cat,
producers = products.Select(x => new ProducerVM
{
Id = x.producer.Id,
Name = x.producer.Name,
IsChecked = false
}).GroupBy(x => x.Name).Select(x => x.First()).ToList() ,
colors = products.Select(x => new ColorVM
{
Id = x.color.Id,
Name = x.color.Name,
IsChecked = false
}).GroupBy(x => x.Name).Select(x => x.First()).ToList(),
minPrice = products.Min(x => x.General.Price),
maxPrice = products.Max(x => x.General.Price)
};
return filter;
}
//Фильтрация товаров:
private IEnumerable<Product> GoFilter(IEnumerable<Product> filtred, ProductFilter filter)
{
//По производителю:
int[] targetProdIds = filter.producers.Where(x => x.IsChecked).Select(x => x.Id).ToArray();
if(targetProdIds.Count() != 0)
filtred = filtred.Where(prod => targetProdIds.Contains(prod.Producer_Id));
//По цвету:
int[] targetColIds = filter.colors.Where(x => x.IsChecked).Select(x => x.Id).ToArray();
if (targetColIds.Count() != 0)
filtred = filtred.Where(prod => targetColIds.Contains(prod.Color_Id));
//По цене:
filtred = filtred.Where(x => x.General.Price >= filter.minPrice);
filtred = filtred.Where(x => x.General.Price <= filter.maxPrice);
return filtred;
}
