Question

我无法在论坛上将帖子按各自的类别列出。当我不指定类别时，我可以将帖子列出，但是当我尝试指定类别时，则不会显示帖子。例如，{% for post in posts|slice:":4" %}将列出4个最新帖子。而{% for post in gen_discussion|slice:":4" %}什么也没显示。

任何人都可以根据我的以下代码提出解决方案的建议吗？

论坛HTML：

<section class="container">
  <div class="my-3 p-3 bg-white rounded shadow-sm">
    <h5 class="border-bottom border-gray pb-2 mb-0 forum-category-header">
      Recent Posts
    </h5>
    <!-- A list of recent posts will display here. Limited to 4 most recent posts -->
    {% for post in posts|slice:":4" %}
    <div class="media text-muted pt-3">
      <p class="media-body pb-3 mb-0 small lh-125 border-bottom border-gray">
        <strong class="d-block text-gray-dark margin-bottom-5"
          ><a href="{% url 'forum_post_details' post.id %}"
            >{{ post.title }}</a
          ></strong
        >
        {{ post.content|truncatewords:30 }}
      </p>
      <hr />
    </div>
    {% endfor %}
  </div>
  <div class="my-3 p-3 bg-white rounded shadow-sm">
    <h5 class="border-bottom border-gray pb-2 mb-0 forum-category-header">
      General Discussion
    </h5>
    <!-- A list of recent posts in 'General Discussion' will display here. Limited to 4 most recent posts -->
    {% for post in gen_discussion|slice:":4" %}
    <div class="media text-muted pt-3">
      <p class="media-body pb-3 mb-0 small lh-125 border-bottom border-gray">
        <strong class="d-block text-gray-dark margin-bottom-5"
          ><a href="{% url 'forum_post_details' post.id %}"
            >{{ post.title }}</a
          ></strong
        >
        {{ post.content|truncatewords:30 }}
      </p>
      <hr />
    </div>
    {% endfor %}
    <div class="media text-muted pt-3">
      <p class="media-body pb-3 mb-0 small lh-125 border-bottom border-gray">
        <!-- User can see all 'General Discussion' posts on a new page  -->
        <a class="view-more-option" href="{% url 'gen_discussion' %}"
          >More General Discussion </a
        ><i class="fas fa-arrow-right"></i>
      </p>
    </div>
  </div>
  <div class="my-3 p-3 bg-white rounded shadow-sm">
    <h5 class="border-bottom border-gray pb-2 mb-0 forum-category-header">
      Events
    </h5>
    <!-- A list of recent posts in 'Events' will display here. Limited to 4 most recent posts -->
    {% for post in events|slice:":4" %}
    <div class="media text-muted pt-3">
      <p class="media-body pb-3 mb-0 small lh-125 border-bottom border-gray">
        <strong class="d-block text-gray-dark"
          ><a href="{% url 'forum_post_details' post.id %}"
            >{{post.title }}</a
          ></strong
        >
        {{ post.content|truncatewords:30 }}
      </p>
      <hr />
    </div>
    {% endfor %}
    <div class="media text-muted pt-3">
      <p class="media-body pb-3 mb-0 small lh-125 border-bottom border-gray">
        <!-- User can see all 'Events' posts on a new page  -->
        <a class="view-more-option" href="{% url 'events' %}">More Events </a
        ><i class="fas fa-arrow-right"></i>
      </p>
    </div>
  </div>
</section>

论坛视图：

@login_required
def get_forum(request):
    """
    Will return a list of posts that have been published
    and render them to the 'forum.html' template
    """

    posts = Post.objects.filter(published_date__lte=timezone.now()
                                ).order_by('-published_date')

    gen_discussion = Post.objects.filter(category='General Discussion')

    events = Post.objects.filter(category='Events')

    return render(request, 'forum.html', {'posts': posts},
                  {'events': events},
                  {'gen_discussion': gen_discussion})

Answer 1

将您的名字更改为

DocumentFile

无法根据类别显示帖子（Django）

1 个答案: