Input DTO Update Problems

Hello ! I'm using <b>API Platform <u>2.6</u></b>, so I can use the <b>DataTransformerInitializerInterface</b> interface.
So I tried something like this :

    public function initialize(string $inputClass, array $context = [])
    {
        $dto = new CheeseListingInput();

        if(isset($context[AbstractItemNormalizer::OBJECT_TO_POPULATE])) {

            /** @var CheeseListing $cheeseListing */
            $cheeseListing = $context[AbstractItemNormalizer::OBJECT_TO_POPULATE];

            $dto->title = $cheeseListing->getTitle();
            $dto->description = $cheeseListing->getDescription();
            $dto->price = $cheeseListing->getPrice();
            $dto->isPublished = $cheeseListing->getIsPublished();
            $dto->owner = $cheeseListing->getOwner();
        }

        return $dto;
    }

Is this the correct way to initialize data ?

I also had to nullable each property of the <b>CheeseListingInput</b> class, like this:

    #[Groups(['cheese:write', 'user:write'])]
    public ?string $title = null;

    #[Groups(['cheese:write', 'user:write'])]
    public ?int $price = null;

    #[Groups(['cheese:collection:post'])]
    public ?User $owner = null;

    #[Groups(['cheese:write'])]
    public ?bool $isPublished = false;

    public ?string $description = null;

<u><b>The files :</b></u>

<b>CheeseListingInput</b> : https://gist.github.com/bastien70/859da9286ceb6705f1edd28337e4bc1f
<b>CheeseListingInputDataTransformer</b> : https://gist.github.com/bastien70/aabe1d26569cae96a5c254eb75e9bb5c

Everything seems to be working at this point. I am therefore awaiting your approval to know if this was the way to proceed.

Thank you ! :)

<b>EDIT</b> : Aaaargh ... continuing the course, I saw that you had developed a 'createDto ()' method in the denormalizer that we create in the event that we do not have the right version of API Platform.

    /**
     * @throws \Exception
     */
    private function createDto(array $context): CheeseListingInput
    {
        $entity = $context[AbstractItemNormalizer::OBJECT_TO_POPULATE] ?? null;
        $dto = new CheeseListingInput();
        // not an edit, so just return an empty DTO
        if (!$entity) {
            return $dto;
        }
        if (!$entity instanceof CheeseListing) {
            throw new \Exception(sprintf('Unexpected resource class "%s"', get_class($entity)));
        }
        $dto->title = $entity->getTitle();
        $dto->price = $entity->getPrice();
        $dto->description = $entity->getDescription();
        $dto->owner = $entity->getOwner();
        $dto->isPublished = $entity->getIsPublished();
        return $dto;
    }

In the end I was not that far from the right answer, apart from the fact that I had not put any safety instructions there to avoid potential errors. But I finally imagine that I can use this function by simply calling it inside my '<b>initialize()</b>' method!

Hi!
I was wondering if this whole block:

if (isset($context[AbstractItemNormalizer::OBJECT_TO_POPULATE])) {
            $cheeseListing = $context[AbstractItemNormalizer::OBJECT_TO_POPULATE];
        } else {
            $cheeseListing = new CheeseListing($input->title);
        }

could be shortened into one line like this:
$cheeseListing = $context[AbstractItemNormalizer::OBJECT_TO_POPULATE] ?? new CheeseListing($input->title);