Jarves\Storage\Propel::update PHP Method

    public function update($pk, $values)
    {
        $query = $this->getQueryClass();
        $this->mapPk($query, $pk);
        $item = $query->findOne();
        $values2 = $pk + $values;
        $this->mapValues($item, $values2);
        return $item->save() ? true : false;
    }