flaskbb/flaskbb/templates/forum/category.html

{% set page_title = categories.keys()[0].title %}
{% set active_forum_nav=True %}

{% extends theme("layout.html") %}
{% block content %}

<ol class="breadcrumb">
    <li><a href="{{ url_for('forum.index') }}">Forum</a></li>
    <li class="active">{{ categories.keys()[0].title }}</li>
</ol>

{% include "forum/category_layout.html" %}

{% endblock %}