[#twig] - Macro For Collections Forms

## http://www.scott-sherwood.com/tutorial/symfony-2-0-embedded-forms-for-collections/

<form>

{% macro prototype(entities) %}
  <tr>
    <td>{{form_widget(entities.entitie[0])}}</td>
    <td>{{form_widget(entities.entitie[1])}} </td>
    <td>
      <button class="btn btn-default btn-delete">
        <span class="glyphicon glyphicon-remove"></span>
      </button>
    </td>
  </tr>
{% endmacro %}

<table class="table table-condensed">
  <tbody class="collections">
    {% for entities in entity_form.entities %}
      {{ _self.prototype(entities) }}
    {% endfor %}
  </tbody>
 </table>

</form>