protected function renameColumn($col, $name)
    {
        if (empty($col)) {
            return Yii::t('podium/flash', 'Installation aborted! Column name missing.');
        }
        if (empty($name)) {
            return Yii::t('podium/flash', 'Installation aborted! New column name missing.');
        }
        try {
            $this->db->createCommand()->renameColumn($this->table, $col, $name)->execute();
            return $this->returnSuccess(Yii::t('podium/flash', 'Table column {name} has been renamed to {new}', [
                'name' => $col,
                'new'  => $name
            ]));
        } catch (Exception $e) {
            return $this->returnError($e->getMessage(), __METHOD__,
                Yii::t('podium/flash', 'Error during table column {name} renaming to {new}', [
                    'name' => $col,
                    'new'  => $name
                ])
            );
        }
    }