<nav>
{% assign ordered_collections = site.collections | sort:"order","last" %} {% for c in ordered_collections %} {% if c.indexPage == nil %} {% assign firstDoc = c.docs | sort:"order","last" | first %} {% if c.title != nil %} <a href="{{ site.baseurl }}{{ firstDoc.url }}">{{c.title}}</a> {% endif %} {% else %} <a href="{{ site.baseurl }}{{ c.indexPage }}">{{c.title}}</a> {% endif %} {% endfor %} <a href="{{site.github.repository_url}}">Github</a>
</nav>