Dumplie\Customer\Infrastructure\Doctrine\ORM\Type\Domain\CartItemsType::convertToDatabaseValue PHP Метод

    public function convertToDatabaseValue($value, AbstractPlatform $platform)
    {
        if (is_null($value)) {
            return [];
        }
        if (!is_array($value)) {
            throw ConversionException::conversionFailed($value, $this->getName());
        }
        $data = [];
        foreach ($value as $item) {
            if (!$item instanceof CartItem) {
                throw ConversionException::conversionFailed($value, $this->getName());
            }
            $data[(string) $item->sku()] = ['sku' => (string) $item->sku(), 'quantity' => $item->quantity()];
        }
        return json_encode($data);
    }