/**
* {@inheritDoc}
*/
public function openTag(FormInterface $form = null)
{
if ($form) {
if (!$form->hasAttribute('role')) {
$form->setAttribute('role', 'form');
}
$class = $form->getAttribute('class');
if (strpos($class, 'form-horizontal') === false && strpos($class, 'form-inline') === false) {
$form->setAttribute('class', trim("{$this->defaultClass} {$class}"));
}
}
return parent::openTag($form);
}
