Пытаюсь добавить templatetags (для вывода списка категорий):
templatetags/extra.py
from django import template
from vikblog.blog.models import *
register = template.Library()
def cat (CatPost):
cats=CatPost.objects.all()
return {'cat': cats}
register.inclusion_tag('cat.html')(cat)
cat.html
{% extends "base.html" %}
{% block cat %}
{% for cat in cats %}
<h2>{{ cat.title }}</h2>
{% endfor %}
{% endblock %}base.html
<body>
<h1>Blog</h1>
{% load extra %}
{% cat cats %}
{% block cat %}
{% endblock %}
{% block content %}
{% endblock %}
</body>
Получаю ошибку: Caught VariableDoesNotExist while rendering: Failed lookup for key in u""