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我希望能够通过点击帖子下的评论链接来创建评论，每个帖子都有一个主题，但我无法获得特定帖子下的评论，所以我想添加主题以及更多功能，但我发现很难根据我评论的帖子自动分配主题

我的views.py pk 设置为post.id

def comment(request, pk):
     form = commentform()
     context = {
          'form' : form
     }
     if request.method == 'POST':
          form = commentform(request.POST)
          if form.is_valid():
               forms = form.save(commit=False)
               forms.posts = post.objects.get(id=pk)
               forms.owner = request.user
               forms.topics = topic.objects.get(id=pk)
               forms.save()
               return redirect('home')
     return render(request, 'base/comment.html', context)

我的模型.py

class comments(models.Model):
    topics = models.ForeignKey(topic, on_delete=models.CASCADE, SET_NULL=True, null=True)
    created = models.DateTimeField(auto_now=True)
    posts = models.ForeignKey(post, on_delete=models.CASCADE)
    owner = models.ForeignKey(User, on_delete=CASCADE)
    comment = models.TextField(max_length= 500)

    def __str__(self):
        return str(self.comment)


class post(models.Model):
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    Topic = models.ForeignKey(topic, on_delete=models.CASCADE)
    post = models.TextField(max_length=500)
    created = models.DateTimeField(auto_now=True)
    def __str__(self):
        return f'{self.post}'

我的表格.py

class commentform(ModelForm):
    class Meta:
        model = comments
        fields = ['comment']
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1 回答 1

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如果我理解正确，您需要的只是导航实例。

现在，如果帖子上的评论属于同一主题，则您不应在评论中也包含该主题。这样一来，您只是在复制信息，保持同步将是额外的努力。只需将主题与帖子联系起来，然后遍历它即可获得它。

class comments(models.Model):
    created = models.DateTimeField(auto_now=True)
    posts = models.ForeignKey(post, on_delete=models.CASCADE)
    owner = models.ForeignKey(User, on_delete=CASCADE)
    comment = models.TextField(max_length= 500)


class post(models.Model):
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    topic = models.ForeignKey(Topic, on_delete=models.CASCADE)
    post = models.TextField(max_length=500)
    created = models.DateTimeField(auto_now=True)

要访问该主题，只需考虑帖子，

post = post.objects.get(pk)
post.topic
于 2021-11-20T22:07:38.183 回答