@fbourigault by which book.author actually is author.id as uuid, and not a Doctrine relationship object?

Am having a similar situation here: can't manage to get it working to have a uriVariable to retrieve a collection of books without the author having a mapped relation to the book. In short; we simply want to "filter" the book resource on the book.author_id field, through a uriVariable in the GetCollection operation.

For context; this is a DDD scenario where we need to introduce a strict boundary between two aggregate roots of two separate bounded contexts. They should get identified through their identifiers, and not through a Doctrine relationship.

#[ApiResource(
    operations: [
        new GetCollection(
            uriTemplate: '/authors/{authorId}/books',
            uriVariables: ['authorId' => new Link(property: 'authorId')],
        ),
    ],
)]
class Book
{
    private Uuid $authorId;
}

Can't find a way (e.g. in the docs) on using the Link field property. That field does not do anything. It does not throw an exception, and the compilation eventually even adds that authorId as a where filter on the book id property.

Imho the Link::property field could add a simple "where" filter on the query builder.

Other attempts

• Tried adding the GetCollection operation with the Link on both the book and the author
• Using Link with any combination of fromProperty, fromClass, toProperty, toClass. They all result in an exception thrown by the QueryBuilderHelper or via the LinksHandlerTrait.

@soyuka would be great to have documentation on which fields on these metadata classes actually do something 🙌