/**
* Render a hidden element for empty/unchecked value
*
* @param MultiCheckboxElement $element
* @param array $attributes
* @return string
*/
protected function renderHiddenElement(MultiCheckboxElement $element, array $attributes)
{
$closingBracket = $this->getInlineClosingBracket();
$uncheckedValue = $element->getUncheckedValue() ? $element->getUncheckedValue() : $this->uncheckedValue;
$hiddenAttributes = array('name' => $element->getName(), 'value' => $uncheckedValue);
return sprintf('<input type="hidden" %s%s', $this->createAttributesString($hiddenAttributes), $closingBracket);
}
