我遇到了同样的问题，解决方法如下：
1。
对于上面提到的管理站点，只需为父字段设置blank=True。我的评论模型：
class Comment(models.Model):
post = models.ForeignKey(Post, related_name='comments')
name = models.CharField(max_length=80)
email = models.EmailField(max_length=200, blank=True)
body = models.TextField()
created = models.DateTimeField(auto_now_add=True)
updated = models.DateTimeField(auto_now=True)
# manually deactivate inappropriate comments from admin site
active = models.BooleanField(default=True)
parent = models.ForeignKey('self', null=True, blank=True, related_name='replies')
class Meta:
# sort comments in chronological order by default
ordering = ('created',)
def __str__(self):
return 'Comment by {}'.format(self.name)
- 记得运行
makemigrations和migrate
2.让我们从视图开始。我正在使用post_detail
查看以显示帖子及其 cmets。我们添加了一个 QuerySet 来检索这篇文章的所有父活动 cmets。之后，我们使用表单的is_valid() 验证提交的数据。如果表单有效，我们检查提交的数据是否来自重播按钮表单中的隐藏输入。接下来，如果parent_id 退出，我们为重播评论创建父对象（parent_obj）和replay_comment 对象，然后我们将parent_obj 分配给replay_comment。
如果parent_obj 等于None，我们只需通过创建new_comment 对象并将其保存到数据库来继续进行正常注释。
def post_detail(request, post):
# get post object
post = get_object_or_404(Post, slug=post)
# list of active parent comments
comments = post.comments.filter(active=True, parent__isnull=True)
if request.method == 'POST':
# comment has been added
comment_form = CommentForm(data=request.POST)
if comment_form.is_valid():
parent_obj = None
# get parent comment id from hidden input
try:
# id integer e.g. 15
parent_id = int(request.POST.get('parent_id'))
except:
parent_id = None
# if parent_id has been submitted get parent_obj id
if parent_id:
parent_obj = Comment.objects.get(id=parent_id)
# if parent object exist
if parent_obj:
# create replay comment object
replay_comment = comment_form.save(commit=False)
# assign parent_obj to replay comment
replay_comment.parent = parent_obj
# normal comment
# create comment object but do not save to database
new_comment = comment_form.save(commit=False)
# assign ship to the comment
new_comment.post = post
# save
new_comment.save()
return HttpResponseRedirect(post.get_absolute_url())
else:
comment_form = CommentForm()
return render(request,
'core/detail.html',
{'post': post,
'comments': comments,
'comment_form': comment_form})
简单的评论表单：
class CommentForm(forms.ModelForm):
class Meta:
model = Comment
fields = ('name', 'email', 'body')
* 更多关于ModelForm
最后是模板。我们需要创建两个表单。一种用于 cmets，另一种用于重放。这里有简单的模板：
<!-- Comments Form -->
<h2>Add a new comment</h2>
<form action="." method="post">
{{ comment_form.as_p }}
{% csrf_token %}
<button type="submit">Add comment</button>
</form>
<!-- Comment with nested comments -->
{% for comment in comments %}
<div class="comment" style="background-color: powderblue">
<p class="info">{{ comment.name }} | {{ comment.created }}</p>
{{ comment.body|linebreaks }}
{% for replay in comment.replies.all %}
<p class="info">{{ replay.name }} | {{ replay.created }}</p>
<li>{{ replay.body }}</li>
{% endfor %}
<h5>Replay</h5>
<form action="." method="post">
{{ comment_form.as_p }}
{% csrf_token %}
<!-- Hidden input for parent comment.id -->
<input type="hidden" name="parent_id" value="{{ comment.id }}">
<input class="btn btn-primary" type="submit" value="Replay">
</form>
</div>
{% empty %}
<h4>There are no comments yet.</h4>
{% endfor %}
只需添加一些漂亮的 css 和 jquery 即可淡入回复 cmets ，仅此而已。