API Platform - Get collection where Author is User - api

Question

I currently have an Offer entity which has an author property, like so :
#[ORM\ManyToOne(targetEntity: User::class, inversedBy: 'offers')]
#[ORM\JoinColumn(nullable: false)]
private $author;
Currently, when I do a get request on /offers/, I get a collection of ALL the offers, which is normal.
I would want to only retrieve the offers where the author is the logged in user instead. (basically a findBy(['author'=>$this->getUser()]))
After searching on the internet I've been trying the following, which obviously is not working
#[ORM\Entity(repositoryClass: OfferRepository::class)]
#[ApiResource(
normalizationContext: [
'groups' => ['read'],
],
itemOperations: [
'get' => [
'security' => 'object.author == user',
]
],
collectionOperations: [
'get' => [
'security' => 'object.author == user',
]
]
)]
class Offer
{
...
This gives me the following error :
hydra:description: "Warning: Undefined property:
ApiPlatform\Core\Bridge\Doctrine\Orm\Paginator::$author"
Which tells me this is completely the wrong approach.
Kind of stuck here, any hint ?
Thank you.

Answer 1

Maybe a bit late but this is answered by implementing an "extension". That would allow the collection to be filtered to match only items with a specific condition (in your case, a User).
There's an old issue (here: https://github.com/api-platform/core/issues/1481).
And official documentation here: https://api-platform.com/docs/core/extensions/#example.