{% set parent_id = parent_id|default(null) %}
{% set model = createModel('Category','category') %}
{% set model = model.getActive().where('parent_id','=',parent_id) %}
{% set items = model.orderBy('position','asc').orderBy('id','asc').get()  %}

{% set page_url = page_url|default('') %}

<div class="ui {{ class }}">
    {% for item in items %}       
        {{ content }}
    {% endfor %}
</div>