[Fixed]-Bootstrap Carousel in Mezzanine

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Trying to perform this logic in the template isn’t ideal, as you have discovered. I would suggest you do it in the view function. Something along these lines:

# Handy function to split a list into equal sized groups,
# See http://stackoverflow.com/a/434328/3955830
def chunker(seq, size):
    return (seq[pos:pos + size] for pos in xrange(0, len(seq), size))

# Split images into groups of three
image_groups = chunker(images, 3)

# Pass image_groups to your template context.
# If in a class based view then you can do this in the
# get_context_data() method.

Then in the template, things are much simpler:

{% for group in image_groups %}
    <div class="item {% if forloop.first %}active{% endif %}">
        <div class="gallery row">
            <div class="col-xs-12 col-sm-12">
            {% for image in group %}
                <a class="thumbnail" rel="#image-{{ image.id }}" title="{{ image.description }}" href="{{ image.file.url }}">
                <img class="img-responsive" src="{{ MEDIA_URL }}{% thumbnail image.file 200 200 %}"></a>
            {% endfor %}
            </div>
        </div>
    </div>
{% endfor %}
👤solarissmoke

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