小编mas*_*ing的帖子

模型.py

class Wishlist(models.Model):
    home = models.ForeignKey(Home, on_delete=models.CASCADE, blank=False, null=False)
    user = models.ForeignKey(User, on_delete=models.CASCADE, blank=False, null=False)

    def __str__(self):
        return "{} - {}".format(self.user.username, self.home.address)

    class Meta:
        ordering = ('user',)

网址.py

urlpatterns = [
    path(r'wishlist/<int:pk>/', views.WishlistGetUserItems.as_view(), name='wish-user-list'),
]

视图.py

class WishlistGetUserItems(APIView):

    def get(self, request, pk):
        wishlist = get_list_or_404(Wishlist, user=pk)
        data = serializers.UserWishlistSerializer(wishlist).data
        Response(data, status=status.HTTP_200_OK)

我也试过打印消息，但似乎没有调用该方法

我有以下型号：

class Category(models.Model):
    ....
    posts = models.PositiveIntegerField(_('numero post'), default=0)
    ....

class Post(models.Model):
    ....
    categories = models.ManyToManyField(Category, blank=True, verbose_name=_('categorie'))
    ....

该Category.posts字段计算与其所属类别相关的帖子数量。CreateView我通过以下方式将计数器增加到：

class CreatePostView(LoginRequiredMixin, CreateView):
    model = Post
    ...

    def form_valid(self, form, **kwargs):
        ...
        categories = self.object.categories.all()
        for category in categories:
            category.posts = category.posts + 1
            category.save()

        self.object.save()
        return super(CreatePostView, self).form_valid(form)

当我删除博客文章时，我需要在删除博客文章时减少计数器Post。我尝试这样做：

class DeletePostView(LoginRequiredMixin, DeleteView):
    model = Post
    ...

    def form_valid(self, form, **kwargs):
        ...
        categories = post.categories.all()
        for category in categories:
            if (category.posts - 1) > …