adding ":" to all labels and "*" to all required fields inside symfony 1.3+ forms

Configuration.class.php

<?php

class privateConfiguration extends sfApplicationConfiguration
{
    public function configure()
    {
        $this->dispatcher->connect('form.post_configure', array($this, 'listenToFormPostConfigure'));
    }

    /**
     * Listens to the view.configure_format event.
     *
     * @param sfEvent An sfEvent instance
     * @static
     */
    static function listenToFormPostConfigure(sfEvent $event)
    {

        $form = $event->getSubject();
        $widgetSchema = $form->getWidgetSchema();
        foreach ($form->getValidatorSchema()->getFields() as $fieldName => $validator)
        {
            if (isset($widgetSchema[$fieldName]))
            {
                $label = $widgetSchema[$fieldName]->getLabel() ? $widgetSchema[$fieldName]->getLabel() : sfInflector::humanize($fieldName);
                $asterisk = $validator->getOption('required') ? '&nbsp;*' : null;
                $widgetSchema[$fieldName]->setLabel($label . $asterisk . '&nbsp;:');
            }

        }
    }
}

I've got duplicated asterisks on merged forms, so I've done this:

   if (substr($label, -1, 1) != '*') {
      $asterisk = $validator->getOption('required') ? '*' : null;
      $widgetSchema[$fieldName]->setLabel($label . $asterisk);
    }