{% nav %}
This tag helps create a hierarchical navigation menu for entries in a Structure section or a Category Group.
{% set entries = craft.entries.section('pages') %}
<ul id="nav">
{% nav entry in entries %}
<li>
<a href="{{ entry.url }}">{{ entry.title }}</a>
{% ifchildren %}
<ul>
{% children %}
</ul>
{% endifchildren %}
</li>
{% endnav %}
</ul>
# Parameters
The {% nav %} tag has the following parameters:
# Item name
The first thing to follow “{% nav” is the variable name you’d like to use to represent each item in the loop, e.g. item, entry, or category. You will be using this variable name to reference the items inside the loop.
# in
Next you need to type the word “in”, followed by the array of entries the tag should loop through. This can be an actual array, or an ElementCriteriaModel object.
The {% nav %} tag requires elements to be queried in a specific (hierarchical) order, so make sure you don’t override the order criteria parameter in conjunction with this tag.
# Showing children
To show the children of the current element in the loop, use the {% children %} tag. When Craft gets to this tag, it will loop through the element’s children, applying the same template defined between your {% nav %} and {% endnav %} tags to those children.
If you want to show some additional HTML surrounding the children, but only in the event that the element actually has children, wrap your {% children %} tag with {% ifchildren %} and {% endifchildren %} tags.
The {% nav %} tag should only be used in times when you want to show elements in a hierarchy, and you want the DOM to express that hierarchy. If you want to loop through elements linearly, use Twig’s for (opens new window) tag instead.