{% for format_name, format in resources.items %}
    <div class="btn-group">
    {% for f in format %}
        {% if forloop.first %}
            <a type="button" class="btn {{ button_class }}" href="{{ f.0 }}">{{ format_name|upper }}</a>
        {% else %}
            {% if forloop.counter0 == 1 %}
                <button type="button" class="btn {{ button_class }} dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
                    <span class="caret"></span>&nbsp
                </button>
                <ul class="dropdown-menu" role="menu">
            {% endif %}
            <li><a href="{{ f.0 }}">{{ f.1 }}</a></li>
            {% if forloop.last %}
                </ul>
            {% endif %}
        {% endif %}
    {% endfor %}
    </div>
{% endfor %}