Django Template changing html attribute based on slug and current request

When I tried to iterate through a list of post titles to create links in a django template the urls never match the requested path (matching the current web page should alter the formatting on the page for that list item). When I try and change things, Django spits out a 404 error which doesn't let me diagnose the problem or it "works" but not as expected.

the relevant url patterns:

 path('<slug:post>', views.blog_post, name='entries')

the relevant views function:

def blog_post(request, post):
    try:
        return render(request, 'blog/post.html', {
            'post_title':post,
            'post_content':blog_posts[],
            'posts':blog_posts.keys
            })
    except:
       raise Http404()

the template:

<ul>
   {% for post in posts %}
   {% url "blog:entries" "{{post}}" as blog_entry %}
   <li><a href="/blog/{{post}}" {% if request.path == blog_entry %} class="active"{% endif %}>
   <span class="item">{{post}}</span>
   </a></li>
   {% endfor %}
</ul>

I suspect the {% url "blog:entries" "{{post}}" as blog_entry %} in the template is not resolving correctly as when I replace the href with {% blog_entry %} it causes a 404 error.

I have tried hard coding it in, I have tried different ways of writing the url, I have tried changing the syntax (in case I am doing it incorrectly. I have checked the page source when I have run tests. I have never been able to get the class attribute to be "active" when on the matching page.

urls.py never get the right path because you did some errors. If I understood you correctly you want single blog to be seen in details (to get single blog object).

urls.py

path('blog/' all_blogs, name='all_blogs'), # all blogs
path('blog/<str:slug>', views.single_blog, name='single_blog'), # one blog

views.py

def all_blogs(request):
    blogs = Blogs.objects.all()
    return render(request, tmpl_name, {'blogs':blogs})

def single_blog(request, slug):
    try:
        blog = Blog.obejcts.get(slug=slug)
        return render(request, tmpl_name, {"blog":blog})
    except Blog.DoesNotExist:
        # You can return error message or 404 page what ever you like.
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