Custom Twig template for embedded form.

gistfile1.twig

{% block collection_widget %}
{% spaceless %}

{#
  Inspired by:
  https://groups.google.com/forum/?fromgroups=#!topic/symfony2/onor9uFte9E
  https://gist.github.com/1294186
#}	

{% if prototype is defined %}
{% set attr = attr|merge({'data-prototype': form_row(prototype) }) %}
{% endif %}
    
<div {{ block('widget_container_attributes') }}>
{% set fieldNum = 1 %}
{% for child in form %}
  <div id="{{ id }}_{{ fieldNum }}">
    <img src="{{ child.vars.value.slug }}.{{ child.vars.value.fileextension }}" />
    {{ form_widget(child.name) }} 
  </div>
  {% set fieldNum = fieldNum + 1 %}
{% endfor %}
</div>    
{% endspaceless %}
{% endblock collection_widget %}