Form theming a collection widget - symfony

Question

I have a collection widget in my form. That's displayed like:
Teams 0 player1 inputfield
1 player2 inputfield
I would like to not display the word 'teams' and the '0' and the '1'.
I've got this block in my fields.html.twig template, but not really sure how to edit this.
{% block collection_widget %}
{% spaceless %}
{% if prototype is defined %}
{% set attr = attr|merge({'data-prototype': form_row(prototype) }) %}
{% endif %}
{{ block('form_widget') }}
{% endspaceless %}
{% endblock collection_widget %}
{% block form_label %}
{% spaceless %}
<div class="hidden">
{{ block('generic_label') }}
</div>
{% endspaceless %}
{% endblock form_label %}
ChallengeType form:
class ChallengeType extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$builder
->add('teams', 'collection', array(
'type' => new TeamType(),
'allow_add' => true
))
->add('place')
->add('date');
}
public function getName()
{
return 'challenge';
}
public function getDefaultOptions(array $options)
{
return array('data_class' => 'Tennisconnect\DashboardBundle\Entity\Challenge');
}
}
Thx.

Answer 1

Those lables are created in form_label block. I usually wrap them in a div and set them hidden when needed.
Edit:
There is a better solution :).
Change collection section of the ChallengeType.php with following
->add('teams', 'collection', array(
'type' => new TeamType(),
//label for Teams text
'attr' => array('class' => 'team-collection'),
//label for each team form type
'options' => array(
'attr' => array('class' => 'team-collection')
),
'allow_add' => true
))
Now those unwanted labels will have team-collection class. In your css file you can set display:none for label.team-collection. No need to change form theme block definition.