class ShopPage(ListView):
    model = models.Bag
    template_name = 'products/shop.html'
    paginate_by = 2

    bsort = 'Date'
    checkboxes = []


    def get_queryset(self):
        queryset = super().get_queryset()
        self.checkboxes = []
        for material in self.request.GET.keys():
            if material != 'select':
                queryset = queryset.filter(material__id=self.request.GET.get(material))
                self.checkboxes.append(material)
            else:
                if self.request.GET.get('select') == 'price':
                    queryset = queryset.order_by('-price')
                    self.bsort = 'Price'
                elif self.request.GET.get('select') == 'sold':
                    queryset = queryset.order_by('-num_sold')
                    self.bsort = 'Sold'
                else:
                    queryset = queryset.order_by('-pub_date')
                    self.bsort = 'Date'
        return queryset

    def get_context_data(self):
        context = super().get_context_data()
        print(models.Material.objects.all())
        context['material_list'] = models.Material.objects.all()
        print(self.checkboxes)
        context['checkboxes'] = self.checkboxes
        context['sort'] = self.bsort
        return context