app/frontend/templates/components/navbar.html

<!-- All the data is accessible via context  -->
<div>
    {% if context.user.role == "guest" %}
        <p>Hello, guest!</p>
    {% else %}
        <p>Hello, {{ context.user.instance.email }}</p>
    {% endif %}

    <p>Today</p>
    <ul>
        {% for chat in context.chats.today %}
            <li>{{ chat.title }}</li>
        {% endfor %}
    </ul>
    <p>Last week</p>
    <ul>
        {% for chat in context.chats.last_week %}
            <li>{{ chat.title }}</li>
        {% endfor %}
    </ul>
    <p>Last month</p>
    <ul>
        {% for chat in context.chats.last_month %}
            <li>{{ chat.title }}</li>
        {% endfor %}
    </ul>
    <p>Later</p>
     <ul>
        {% for chat in context.chats.other %}
            <li>{{ chat.title }}</li>
        {% endfor %}
    </ul>
</div>