How to force Django not to cache queryset in ListView?

Question

Django

Hello, there is a view, sales pages.

class SaleView(generic.ListView):
    template_name = 'artskill/sale.html'
    context_object_name = "products"
    queryset = [SaleImages.objects.filter(state=True), Product.objects.filter(show_sale_price=True)]

When I make a change to the database, the information on the sales page itself remains old, it changes only when the server is restarted. How to make django not cache this queryset?

Answer 1

What is caching? The class, together with its fields, is declared once - when the code is read by the interpreter. Accordingly, the value of the class field is defined in it until the end of the interpreter's work. If you want the value to be new each time it is accessed, use the method and return not a list, but a QuerySet:

class SaleView(generic.ListView):
    template_name = 'artskill/sale.html'
    context_object_name = "products"

    def get_queryset(self):
        return Product.objects.filter(show_sale_price=True)