blog/filtering-and-ordering-with-restless

class.py

class APIOrderingMixin:
    allowed_fields_ordering = []
    ordering_field = 'order_by'

    def ordering(self, queryset):
        order_by = self.request.GET.get(self.ordering_field)
        if not order_by:
            return queryset

        if order_by.split('-')[-1] in self.allowed_fields_ordering:
            return queryset.order_by(order_by)

        return queryset