POST result isn't auto-wired to Output DTO

[arthurGrinjo]

Underneath my setup (in short, without use statements and getters and setters); symfony 8.0 (ObjectMapper 8.0) and ApiPlatform 4.2.
REPO: https://github.com/arthurGrinjo/ApiPlatformDtoPostPutFailure

Basically it's about this description: https://api-platform.com/docs/core/dto/#2-automated-mapped-inputs-and-outputs

Get() and GetCollection() work perfectly fine with my dto structure. The Post operation does add an object to the DB however the result is a 400 error: "Unable to generate an IRI for the item of type "App\Dto\Route"" Which seems to be logic, in this class I describe the operations. However it's not the output class defined in the Post operation which is actually mapped to the correct source.

Debugging shows me the code does understand there is an output dto. However the class property in the Operation is set to app/dto/route.

Adding class: RouteEntity.php to the Post-operation does have some effect; no 400 error, and a response with "@id": "/api/.well-known/genid/de884912fcb9bca17e56", but now it bypasses the dto's and its validation.

Adding an #[Map()] to App\Dto\Route.php with target and/or resource has no effect and does not seem to be logic.

Using a custom processor has no effect. The class is already defined in the Operation and results in the same 400-error.

How to tell my application to use the output dto in combination with the route-entity? Before this symfony version and api platform version I used self-written processors, providers and mappers, also for the Get operations. With the latest version of the ObjectMapper and ApiPlatform I could already remove the mappers and providers for the get operations. I hope this is also possible for Post and Put operations.

LATEST VERSION SEE: REPO

Entity Route.php

namespace App\Entity;

#[Entity(repositoryClass: RouteRepository::class)]
class Route implements EntityInterface
{
    #[ORM\Id, ORM\GeneratedValue]
    #[ORM\Column(type: 'integer')]
    #[ApiProperty(readable: false, writable: false, identifier: false)]
    private ?int $id;

    #[ORM\Column(type: 'uuid', unique: true)]
    #[ApiProperty(readable: false, writable: false, identifier: true)]
    private Uuid $uuid;

    #[Column(type: Types::STRING, length: 180)]
    private string $name;
}

ApiResource Route.php

namespace App\Dto;

use App\Entity\Route as RouteEntity;

#[ApiResource(
    shortName: self::SHORT_NAME,
    stateOptions: new Options(entityClass: RouteEntity::class),
)]
#[GetCollection(
    uriTemplate: self::COLLECTION_URI,
    output: RouteCollectionResponseDto::class,
)]
#[Get(
    uriTemplate: self::ITEM_URI,
    uriVariables: [
        'uuid' => new Link(fromClass: RouteEntity::class, identifiers: ['uuid']),
    ],
    requirements: [
        'uuid' => RegexValidations::REGEX_UUID,
    ],
    output: RouteResponseDto::class,
)]
#[Post(
    uriTemplate: self::COLLECTION_URI,
    input: RouteRequestDto::class,
    output: RouteResponseDto::class,
)]
final readonly class Route {
    const string SHORT_NAME = 'route';
    const string COLLECTION_URI = '/routes';
    const string ITEM_URI = '/routes/{uuid}';
}

Request DTO RouteRequestDto.php

namespace App\Dto\Route\Request;

use App\Entity\Route as RouteEntity;

#[Map(target: RouteEntity::class)]
class RouteRequestDto implements RequestDto
{
    #[Assert\Length(min: 0, max: 60)]
    public string $name;
}

[arthurGrinjo]

So I finally found a solution! By re-implementing my standard-processor and add map: false to the operation. Now all operations work as expected. I updated my repo.

#[Post(
    uriTemplate: self::COLLECTION_URI,
    input: RouteRequestDto::class,
    output: RouteResponseDto::class,
    processor: StandardProcessor::class,
    map: false,
)]
#[Put(
    uriTemplate: self::ITEM_URI,
    uriVariables: [
        'uuid' => new Link(fromClass: RouteEntity::class, identifiers: ['uuid']),
    ],
    requirements: [
        'uuid' => RegexValidations::REGEX_UUID,
    ],
    input: RouteRequestDto::class,
    output: RouteResponseDto::class,
    processor: StandardProcessor::class,
    map: false,
)]