基于Django类的视图：除非登录，否则拒绝访问future 日期

你只需在get_queryset分钟内过滤掉就行了:

from django.db.models import Q
from django.utils.timezone import now


class PromotionDetailView(generic.DetailView):
    model = Promotion
    context_object_name = 'book'
    template_name = 'PromoManager/book_detail.html'

    def get_queryset(self, *args, **kwargs):
        qs = super().get_queryset(*args, **kwargs)
        if not self.request.user.is_authenticated:
            qs = qs.filter(Q(promotion_date=None) | Q(promotion_date__lte=now()))
        return qs

因此，这将把查询集限制为将来不存在的项目，以防用户登录.过滤也在数据库端进行.

您可以通过覆盖dispatch来处理404，从而在这种情况下执行重定向:

from django.db.models import Q
from django.http import Http404
from django.shortcuts import redirect
from django.utils.timezone import now


class PromotionDetailView(generic.DetailView):
    model = Promotion
    context_object_name = 'book'
    template_name = 'PromoManager/book_detail.html'

    def get_queryset(self, *args, **kwargs):
        qs = super().get_queryset(*args, **kwargs)
        if not self.request.user.is_authenticated:
            qs = qs.filter(Q(promotion_date=None) | Q(promotion_date__lte=now()))
        return qs

    def dispatch(self, *args, **kwargs):
        try:
            return super().dispatch(*args, **kwargs)
        except Http404:
            return redirect('name-of-some-view')