/**
* Return escaped value for calendar
*
* @param string $index
* @return string
*/
public function getEscapedValue($index = null)
{
if ($this->getColumn()->getFilterTime()) {
$value = $this->getValue($index);
if ($value instanceof Zend_Date) {
return $value->toString($this->getLocale()->getDateTimeFormat(Mage_Core_Model_Locale::FORMAT_TYPE_SHORT));
}
return $value;
}
return parent::getEscapedValue($index);
}
