Set category and tag refers to a Blog

templates/view_blog.html

@@ -1,6 +1,7 @@
 {% extends "templates/base.html" %}
 
 {% block content %}
+<a href="/category/{{ blog.id }}">Categories</a>
 {% if user.is_superuser %}
 <form action="/blog/edit/{{ blog.id }}" method="post">
 {% csrf_token %}