Entity field nullable=true but can not be null. (Symfony) - php

Question

I have some entities and when I find an interaction (CRUD) for each of them I stock the action in a Logs entity.
My Logs entity has FK to some other entities, and these FK fields can be null.
When I create my new Logs it says:
Expected type 'App\Entity\Client'. Found 'null'.
For the precision, everything works perfectly without the Logs part so I need to fix it to have the result I want.
My Logs entity on where I get the error:
#[ORM\ManyToOne(inversedBy: 'logs', cascade: ['persist'])]
#[ORM\JoinColumn(nullable: true, onDelete: 'SET NULL')]
private ?Client $client = null;
My Client entity:
#[ORM\OneToMany(mappedBy: 'client', targetEntity: Logs::class, orphanRemoval:false, cascade: ['persist'])]
private Collection $logs;
PS: I want the logs to not be deleted in cascade while deleting the stuff it refers to.
EDIT:
In my Group entity:
public function getClient(): ?Client
{
return $this->client;
}
In my Client entity:
/**
* #return Collection<int, Group>
*/
public function getGroups(): Collection
{
return $this->groups;
}
Here is where I get the error:
#[Route('/new', name: 'app_user_new', methods: ['GET', 'POST'])]
public function new(Request $request, UserPasswordHasherInterface $userPasswordHasher, UserRepository $userRepository, LogsRepository $logsRepository, GroupRepository $groupRepository, SiteRepository $siteRepository, ClientRepository $clientRepository): Response
{
$user = new User();
$form = $this->createForm(UserType::class, $user);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
// encode the plain password
$user->setPassword(
$userPasswordHasher->hashPassword(
$user,
$form->get('password')->getData()
)
);
$userRepository->save($user, true);
// take all needed information
$now = new DateTime('now');
$action = 'Create "'.$user->getMail().'" user';
$result = 'SUCCESS';
$gw_interaction = 'none';
$client = $clientRepository->clientToCreateAndDelete($clientRepository);
$group = $groupRepository->groupToCreateAndDelete($client, $groupRepository);
$site = $siteRepository->siteToCreateAndDelete($group, $siteRepository);
// write this action on the logs
$logsRepository->createANewLog($now, $action, $result, $gw_interaction, $user, $client, $site);
// delete the factice client
// $groupRepository->remove($group, true);
$clientRepository->remove($client, true);
return $this->redirectToRoute('app_user_index', [], Response::HTTP_SEE_OTHER);
}
return $this->renderForm('user/new.html.twig', [
'user' => $user,
'form' => $form,
]);
}
I can't put null as a value so I tried to create the needed entities, add the log and then remove the entities but it also doesn't work. It says I can't delete a parent row before children's (I have a group a child of a client) But if I delete the group and then delete the client, I still have this error. This is why I just want to be able to give a null at the beginning so I do not need to create and delete useless entities.
My function looks like this:
public function createANewLog(DateTime $now, String $action, String $result, String $gw_interaction, User $user)
{
$logs = new Logs();
$logs->setDatetime($now);
$logs->setAction($action);
$logs->setResultat($result);
$logs->setGwInteraction($gw_interaction);
$logs->setHisUser($user);
$this->save($logs, true);
}
One possible solution:
Because I cannot solve this I found another way to save my values. Now, I deleted client and site columns in Logs:
-> when I need them to be null I just do nothing.
-> when I need them to have a value, I wrote the values in the action:
-> before action had for example: "Create site siteName"
-> now action is for example: "Create site siteName from group
GroupName"