Using the fromModel method when the data collection is called

[matthiastjong]

I have this data model:

final class AdminCategoryData extends Data {
    public function __construct(
        #[DataCollectionOf(AdminComponentData::class)]
        public ?DataCollection $components,
    ) {}
}

Inside the AdminComponentData, I want to use the model Component itself to append some data:

final class AdminComponentData extends Data {
    public function __construct(
        public string $location,
    ) {}

    public function fromModel (Component $component) : self {
        return new self(
            $component->getLocation(),
        );
    }
}

When I call the AdminComponentData::fromModel($component) I have access to the inner Component model and get the right location, however when it is called as a #[DataCollectionOf(AdminComponentData::class)], that gets ignored and I get the exception that too little values are being sent in the data object..

FYI Components is a hasMany relationship on the Category model.

How do we make sure fromModel works when calling the model as a DataCollection?

The reason I am doing this because I want to append that value only on that specific AdminComponentData object. I will use the Component model in another Data Object where the getLocation() method is not needed, thus I do not want to append it to the whole Component model.

[matthiastjong]

For anyone that might run into the same challenge, this is how you fix it:

final class AdminCategoryData extends Data
{
    public function __construct(
        #[DataCollectionOf(AdminComponentData::class)]
        public ?DataCollection $components,
    ) {
    }

    public function fromModel(RemoteCategory $category): self
    {
        return new self(
            AdminCategoryBrandData::collection($category->components->map(function ($component) {
                return AdminComponentData::fromModel($component);
            })),
        );
    }
}

You can send fromModel data objects to the collection, you just have to loop/map through them on the parent.
If any package developer sees this I am wondering if this is the way to go?

[ricventu]

Hi,
you have to declare the method static

public static function fromModel (Component $component) : self {

and AdminCategoryData::collect will work using fromModel