public function has($alias, $far_keys = NULL, $cache = TRUE)
{
$tmp = $far_keys ? $far_keys : 'default';
if (is_object($tmp) and $tmp instanceof ORM) {
$tmp = $tmp->id;
}
if ($cache and isset($this->_cached_has[$alias]) and isset($this->_cached_has[$alias][$tmp])) {
return $this->_cached_has[$alias][$tmp];
}
if (!isset($this->_cached_has[$alias])) {
$this->_cached_has[$alias] = array();
}
$has = parent::has($alias, $far_keys);
$this->_cached_has[$alias][$tmp] = $has;
return $has;
}