{% set hash = this.title|length %}
<div id="gallery{{hash}}" class="gallery">
    <h2 class="title">{{ this.title }}</h2>
    <div class="carousel cara" data-ride="carousel" data-interval="3000">
        <div class="carousel-inner">
            {% for item in this.gallery.blocks %}
                {{ item }}
            {% endfor %}
        </div>
    </div>
    {% if this.gallery.blocks|length > 1 %}
    <div class="text-center">
        <a class="carousel-control left" data-slide="prev" onclick="$('#gallery{{hash}}').carousel('prev')">⇐</a>
        <a class="carousel-control right" data-slide="next" onclick="$('#gallery{{hash}}').carousel('next')">⇒</a>
    </div>
    {% endif %}
</div>