2. Conditionals

2.1. If

{% if loop.index is divisibleby 3 %}
{% if loop.index is divisibleby(3) %}

{% if users %}
    <ul>
    {% for user in users %}
        <li>{{ user.username|e }}</li>
    {% endfor %}
    </ul>
{% endif %}

2.2. If else

{% if user.user_id is odd %}
    {{ user.username|e }} is odd
{% else %}
    hmm. {{ user.username|e }} looks pretty normal
{% endif %}

2.3. If elif else

{% if kenny.sick %}
    Kenny is sick.
{% elif kenny.dead %}
    You killed Kenny!  You bastard!!!
{% else %}
    Kenny looks okay --- so far
{% endif %}