/** Fetch pairs from the model
* @access public
* @param string $sql
* @param array $bind
* @return array
*/
public function fetchPairs($sql, $bind = array())
{
$id = md5($sql);
if (!$this->_cache->test($id) || !$this->cache_result) {
$result = parent::fetchPairs($sql, $bind);
$this->_cache->save($result);
return $result;
} else {
return $this->_cache->load($id);
}
}