Django Like Syste --> RedirectView 不重定向到帖子

Question

我在尝试弄清楚如何为我的 Django 博客实现点赞系统时遇到了问题。我有一个帖子详细信息视图和一个PostRedirectView。我希望重定向视图获取我查看的帖子的绝对 URL，并切换喜欢/不喜欢，因为我的喜欢系统是链接在我的 models.py 中的帖子的 ManyToManyField。这是相关代码：

views.py

class PostDetailView(DetailView):

    model = Post

    template_name = 'blog/post_detail.html'

    context_object_name = 'post'

    def get_context_data(self, **kwargs):

        data = super().get_context_data(**kwargs)

        comments_connected = Comment.objects.filter(post_connected=self.get_object()).order_by('-date_posted')

        data['comments'] = comments_connected

        data['form'] = NewCommentForm(instance=self.request.user)

        return data

    def post(self, request, *args, **kwargs):

        new_comment = Comment(content=request.POST.get('content'),

                              author=self.request.user,

                              post_connected=self.get_object())

        new_comment.save()

        return self.get(self, request, *args, **kwargs)

class PostLikeRedirect(RedirectView):

    def get_redirect_url(self, *args, **kwargs):

        obj = get_object_or_404(Post, pk=self.kwargs.get('id'))

        return obj.get_absolute_url()

urls.py

  path('post/<int:pk>/', PostDetailView.as_view(), name='post-detail'),

  path('post/<int:pk>/like', PostLikeRedirect.as_view(), name='post-like'),

models.py

class Post(models.Model):

    content = models.TextField(max_length=1000)

    date_posted = models.DateTimeField(default=timezone.now)

    author = models.ForeignKey(User, on_delete=models.CASCADE, related_name="users_who_authored")

    like = models.ManyToManyField(settings.AUTH_USER_MODEL, blank=True, related_name="users_who_liked")

    def __str__(self):

        return f'{self.author} posts: {self.content[:8]}'

    @property

    def number_of_comments(self):

        return Comment.objects.filter(post_connected=self).count()

    def __str__(self):

        return f'{self.author} posted'

当我转到 post/id(eg 2)/like 时收到的错误是 404 page not found 和错误消息

No Post matches the given query.

我知道该错误意味着什么，我只是无法查明确切的时间以及我没有正确传递查询的位置

Answer 1

id您正在尝试从 URL获取，但它被定义为pk。所以，改变你的观点class PostLikeRedirect(RedirectView):&nbsp; &nbsp; def get_redirect_url(self, *args, **kwargs):&nbsp; &nbsp; &nbsp; &nbsp; obj = get_object_or_404(Post, pk=self.kwargs["pk"])&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ^^^^^^^^^^^^^^^^^^^^^&nbsp; &nbsp; &nbsp; &nbsp; return obj.get_absolute_url()