{% load cache %}
{% load filters %}
{% cache 86400 diff version.cache_key %}
    {% for item in version.diff %}
        <button type="button" class="btn btn-default btn-sm" data-container="body" data-html="true"
                data-trigger="hover" data-toggle="popover" data-placement="bottom" data-content="{{ item.diff|singlequot }}">
            {% firstof item.field.verbose_name field_diff.field.related_name %}
        </button>
    {% endfor %}
{% endcache %}