/**
* Override the cache saving method
* If bad WP db details, _loadCache() returns an empty string (instead of false)
* Use this to not save value
*
* @param string $data|false
* @return $this
*/
protected function _saveCache($data)
{
if (Mage::helper('wordpress/db')->isQueryable()) {
return parent::_saveCache($data);
}
return $this;
}
