/**
* Generate an opening form tag
*
* @param null|FormInterface $form
* @return string
*/
public function openTag(FormInterface $form = null)
{
$attributes = array('action' => '', 'method' => 'get');
if ($form instanceof FormInterface) {
$formAttributes = $form->getAttributes();
if (array_key_exists('class', $formAttributes) && !empty($formAttributes['class'])) {
$formAttributes['class'] = $formAttributes['class'] . ' ';
} else {
$formAttributes['class'] = '';
}
switch ($form->getFormLayout()) {
case FormInstance::FORM_LAYOUT_SEARCH:
$formAttributes['class'] .= 'form-search';
break;
case FormInstance::FORM_LAYOUT_INLINE:
$formAttributes['class'] .= 'form-inline';
break;
case FormInstance::FORM_LAYOUT_HORIZONTAL:
default:
$formAttributes['class'] .= 'form-horizontal';
break;
}
if (!array_key_exists('id', $formAttributes) && array_key_exists('name', $formAttributes)) {
$formAttributes['id'] = $formAttributes['name'];
}
$attributes = array_merge($attributes, $formAttributes);
}
$tag = sprintf('<form %s>', $this->createAttributesString($attributes));
return $tag;
}
