/**
* Selects columns to order by.
* @param string|array|Table\Column column name or array of column names
* @param string sorting direction
* @return Table provides a fluent interface
*/
public function orderBy($col, $sorting = 'ASC')
{
if (\is_array($col)) {
$col2 = array();
foreach ($col as $k => $c) {
$col2[$this->_translateColumns($k)] = $this->_translateColumns((string) $c);
}
unset($col);
$col = $col2;
} else {
$col = $this->_translateColumns((string) $col);
}
$this->dataSource->orderBy($this->_translateColumns($col), $sorting);
return $this;
}
