How can i order by number of childrens?
ex:
{% for page in page.find('/blog').children.order( page.children|length ) %}
<a href="{{ page.url }}">{{ page.title|split(' ')|slice(0, 1)|join }} <sup>{{ page.children|length }}</sup></a>
{% endfor %}
need this
category<sup>10</sup>, category<sup>5</sup>, category<sup>2</sup>