如何在Django中计算博客类别并将其显示在模板中

Question

am new in django am developing a blog which has functions post_list,category_detail and post detail am stuck in post_list function which renders a blog.html i want to display the blog category which are python and hardware together with the total number of posts in that category i have tried my ways it shows the wrong way since there should be six posts in python category and one post in hardware category see the picture here please check the codes and help out

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

Try this:

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

Then you will have access to number of posts for each category:

for category in categories:
    print(category.posts_count)

In your template:

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