为每篇文章 Django 创建单独的评论部分

Question

我正在尝试创建一个独立于每个主题的评论部分。 出于某种原因，我创建的评论应用程序将显示每个主题的所有评论。 例如，如果我对主题 1 发表评论，则相同的评论将出现在主题 2 上。

主题 1：

评论：废话

话题二：

评论：废话

评论应用： models.py

from django.db import models
from django.conf import settings
from blogging_logs.models import Topic
# Create your models here.

class Comment(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL, default=1, on_delete=models.CASCADE)
topic = models.ForeignKey(Topic, on_delete=models.CASCADE)
content = models.TextField()
date_added = models.DateTimeField(auto_now_add=True)
def __str__(self):
return str(self.content)

forms.py(blogging_logs应用程序中(

from django import forms
from .models import Category, Topic, Entry
from comments.models import Comment
class CommentForm(forms.ModelForm):
class Meta:
model = Comment
fields = ['content']
labels = {'text': ''}
widgets = {'text': forms.Textarea(attrs={'cols': 80})}

view.py(blogging_logs应用程序中(

from comments.models import Comment
from .models import Category, Entry, Topic
from .forms import CategoryForm, TopicForm, EntryForm, CommentForm

def topic(request, entry_id):
"""Show entry for single topic"""
topic = Topic.objects.get(id=entry_id)
entries = topic.entry_set.all()
comments = Comment.objects.all()
if request.method != 'POST':
# No comment submitted
form = CommentForm()
else:
# Comment posted
form = CommentForm(data=request.POST)
if form.is_valid():
new_comment = form.save(commit=False)
new_comment.topic = topic
new_comment.user = request.user
new_comment.save()
return HttpResponseRedirect(reverse('blogging_logs:topic', args=[entry_id]))
context = {'topic': topic, 'entries': entries, 'comments': comments, 'form': form}
return render(request, 'blogging_logs/topic.html', context)

主题.html

<h3> Comments Section </h3>
<form class="" action="{% url 'blogging_logs:topic' topic.id%}" method="post">
{% csrf_token %}
{{ form.as_p }}
<button name='submit'> Add Comment </button>
</form>
<div>
{% for comment in comments %}
{{ comment }}
<p>{{comment.date_added|date:'M d, Y H:i' }}</p>
<p>{{comment.user }}</p>
<p>
<a href="{% url 'blogging_logs:delete_comment' comment.id %}">Delete comment</a>
</p>
{% empty %}
<p>no comments entered yet.</p>
{% endfor %}
</div>

我认为通过抓取与主题相关的entry_id，它会保存到该特定主题，但事实并非如此。任何帮助将不胜感激。

Answer 1

你可能想要

def topic(request, entry_id):
"""Show entry for single topic"""
topic = Topic.objects.get(id=entry_id)
entries = topic.entry_set.all()
# This selects all comments, not what you want
# comments = Comment.objects.all()
# Instead you should select just the topic's comments
comments = topic.comment_set.all()

请注意，这使用topic中的反向外键关系。

https://docs.djangoproject.com/en/2.1/topics/db/queries/#related-objects