Question

Django的一个新功能正在开发一个博客，该博客具有post_list，category_detail和post detail功能在呈现blog.html的post_list函数中，我想显示python和硬件的博客类别以及该类别中的帖子总数我尝试了显示错误方式的方法，因为在python类别中应该有6个帖子，在硬件类别see the picture here 中应该有1个帖子，请检查代码并提供帮助

views.py

def post_list(request):
    object_list=Post.objects.filter(status='Published').order_by("-created")
    recent_post=object_list[:4]
    category_list_count=Post.objects.annotate(num_category=Count('Category'))


    page = request.GET.get('page', 1)
    paginator = Paginator(object_list, 3)
    try:
        items = paginator.page(page)
    except PageNotAnInteger:
        items = paginator.page(1)
    except EmptyPage:
        items = paginator.page(paginator.num_pages)
    context={
        'items':items,
        'recent_post':recent_post,
        'category_list_count':category_list_count,
    }
    return render(request,"blog.html",context)

blog.html

      <div class="widget">
          <h3 class="badge">CATEGORIES</h3>
{% for obj in category_list_count %}
          <ul>
            <li><a href="{% url 'category_detail' slug=obj.Category.slug %}">{{obj.Category}}</a> <span class="badge">{{obj.num_category}}</span>
            </li>
          </ul>
{% endfor %}

Answer 1

尝试一下：

# You should change post in Count function based on your model.
categories = Category.objects.all().annotate(posts_count=Count('post'))

然后，您将可以访问每个类别的帖子数量：

for category in categories:
    print(category.posts_count)

在您的模板中：

{% for category in categories %}
      <p>Number of posts: {{category.posts_count}}</p>
{% endfor %}

如何在Django中计算博客类别并将其显示在模板中

1 个答案: