Question

我正在通过获取互联网参考来制作“发布和评论”模型。我创建了Post and Comment模型，在Django管理面板中看起来还可以。我可以添加帖子以及对任何特定帖子的评论。但是当我尝试在模板中的帖子下方（帖子详细信息视图下）显示评论时遇到麻烦。请帮助

models.py

class Post(models.Model):
    author = models.ForeignKey(User,on_delete=models.CASCADE)
    title = models.CharField(max_length=100)
    content = RichTextField()
    tags = models.CharField(max_length=50,blank=True,null=True)
    date_posted = models.DateTimeField(default=timezone.now)

    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(Post,on_delete=models.CASCADE)
    author = models.ForeignKey(User,max_length=50,on_delete=models.CASCADE)
    text = models.TextField()
    create_date = models.DateTimeField(default=timezone.now)

    def get_absolute_url(self):
        return reverse('discuss')

views.py

class PostDetailView(DetailView):
    model = Post

def add_comment_to_post(request,pk):
    return get_object_or_404(Post,pk=pk)
    if request.method == "POST":
        form = CommentForm(request.POST)
        if form.is_valid():
            comment = form.save(commit=False)
            comment.post= post
            comment.save()
            return redirect('post-detail',pk=post.pk)
    else:
        form = CommentForm()
    return render(request, 'discuss/comment_form.html',{'form':form})

def comment_remove(request,pk):
    comment = get_object_or_404(Comment,pk=pk)
    post_pk = comment.post.pk
    comment.delete()
    return redirect('post-detail', pk=post_pk)

post_detail.html

{% extends 'index.html' %}
{% block content %}
<article class="media content-section">
  <div class="medaia-body">
    <img class="rounded-circle article-img" src="{{ object.author.profile.image.url }}" alt="image not found">
    <div class="article-metedata">
      <a class="mr-2" href="{% url 'user-posts' object.author.username %}">{{object.author}}</a>
      <small class="text-muted">{{ object.date_posted|date:"F d, Y"}}</small>
    </div>
    <h2 class="article-title">{{ object.title }}</h2>
    <img class="query-img" src="{{ object.image.url }}" alt="image not found">
    <p class="article-content">{{ object.content|safe }}</p>
  </div>
</article>
{% if object.author == user %}
<div class="post-update-delete">
  <a href="{% url 'post-update' object.id %}"><button class="btn btn-outline-primary">Edit Post</button></a>
  <a href="{% url 'post-delete' object.id %}"><button class="btn btn-outline-primary">Delete Post</button></a>
</div>
{% endif %}
<hr>
<a class="btn btn-primary btn-comment" href="{% url 'add_comment_to_post' pk=post.pk %}">Add Comment</a>
<!-- ############################### ABOVE CODE IS WORKING ############################# -->
<!-- ########################## GETTING PROBLEM IN BELLOW CODE ######################### --> 
  {% for comment in object.comments.all %}
  {% if user.is_authenticated %}
      {{ comment.create_date }}
      {{ comment.text|safe|linebreaks }}
      {{ comment.author }}
  {% endif %}
  {% empty %}
  <p>No Comment</p>
  {% endfor %}
{% endblock %}

在post_deatil.html中，我也尝试过{％in post.comments.all％}中的评论，但它也无法正常工作

Answer 1

由于您没有指定related_name=… parameter [Django-doc]，因此related_name默认为comment_set，因此您可以使用以下方法遍历注释：

{% for comment in object.comment_set.all %}
    …
{% endfor %}

注意：与直接使用settings.AUTH_USER_MODEL [Django-doc]相比，通常最好使用User model [Django-doc]来引用用户模型。有关更多信息，请参见referencing the User model section of the documentation。

无法在模板中显示评论

1 个答案: