Zend\Formで任意のフォームに twitter bootstrap horizontal 対応クラス属性を追加する。

bugController.php

<?php
$form = new \Application\Form\ContactForm;
foreach ($form as $element) {
    $labelAttributes = $element->getLabelAttributes();
    if (isset($labelAttributes['class'])) {
        if (false === strpos('control-label', $labelAttributes['class'])) {
            $labelAttributes['class'] .= ' control-label';
        }
    }
    else {
        $labelAttributes['class'] = 'control-label';
    }
    $element->setLabelAttributes($labelAttributes);
}

if ($class = $form->getAttribute('class')) {
    if (false === strpos('form-horizontal', $class)) {
        $form->setAttribute('class', $class . ' form-horizontal');
    }
}
else {
    $form->setAttribute('class', 'form-horizontal');
}