atomic-carousel.twig

{% set _modifiers = carousel.modifiers|default([])|merge([carousel.options.items == 1 ? 'single' : '']) %}
{% set _options = carousel.options ? carousel.options|json_encode() : '' %}

<div class="owl-carousel {{ _modifiers|join(' ') }}" data-carousel="{{ _options }}">
  {% for item in carousel.items %}
    <div>
      {{ item }}
    </div>
  {% endfor %}
</div>