Question

我的帖子表格有一个评论部分。这都是我的帖子详细信息。发表评论后，您会发现页面未找到错误：http://localhost:8000/post/15/。十五岁以后不存在。每个评论都会添加到帖子中，但错误中的帖子每次都会增加一。

views.py

class PostDetail(DetailView):
    model = Post

    def get_context_data(self, **kwargs):
        data = super(PostDetail, self).get_context_data(**kwargs)
        vc = self.object.view_count
        self.object.view_count = F('view_count') + 1
        self.object.save()
        self.object.view_count = vc + 1
        initial_comment_data = {
            'post': self.get_object(),
        }
        data['comment_form'] = CommentModelForm(initial=initial_comment_data)
        return data

class CommentCreate(LoginRequiredMixin,CreateView):
    model = Comment
    form_class = CommentModelForm

    def form_valid(self, form):
        form.instance.author = self.request.user
        return super().form_valid(form)

models.py

class Post(models.Model):
    title = models.CharField(max_length=100)#title of a post
    content = models.TextField()
    date_posted = models.DateTimeField(default=timezone.now)
    author = models.ForeignKey(User, on_delete=models.CASCADE) #if a user is deleted all of their post will be as well
    view_count = models.IntegerField(default=0)
    post_files = models.FileField(null = True, blank=True)


    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return reverse('post-detail', kwargs={'pk': self.pk})

class Comment(models.Model):
    post = models.ForeignKey('forum.Post', on_delete=models.CASCADE, related_name='comments')
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    text = models.TextField(null=True)
    created_date = models.DateTimeField(default=timezone.now)


    def __str__(self):
        return self.text

    def get_absolute_url(self):
        return reverse('post-detail', kwargs={'pk': self.pk})

我希望评论像它一样进入正确的帖子，但页面未找到错误。

Answer 1

Comment.get_absolute_url方法传递的是pk的{{1}}，而不是comment。

尝试以下方法：

post

我认为，class Comment(models.Model): ... def get_absolute_url(self): # notice I use self.post.pk here instead of self.pk return reverse('post-detail', kwargs={'pk': self.post.pk})返回评论的URL是最佳做法。

在您的Comment.get_absolute_url上，您可以定义一个CreateView [1]来重定向到get_success_url。

Post

[1] https://docs.djangoproject.com/en/2.2/ref/class-based-views/mixins-editing/#django.views.generic.edit.FormMixin.get_success_url

发表评论获得页面未找到错误，但仍然发表评论

1 个答案: