[Doctrine] Allow custom repository method instead of `createQueryBuilder`

[giosh94mhz]

Description

In our codebase we use a different createQueryBuilder, named createUserFilteredQueryBuilder, to make sure that no queries is generated without global constraint.

Since ApiPlatform enforce using a specific method we are forced to a lot of DI customization to override the limitation.

Possible Implementation

First thing first: I will provide a MR for this, but I'd like a feedback before start.

This is the line that need improvements:

core/src/Doctrine/Orm/State/CollectionProvider.php

Lines 51 to 63 in 080574a

	public function provide(Operation $operation, array $uriVariables = [], array $context = []): iterable
	{
	$entityClass = $this->getStateOptionsClass($operation, $operation->getClass(), Options::class);
	/** @var EntityManagerInterface $manager */
	$manager = $this->managerRegistry->getManagerForClass($entityClass);
	$repository = $manager->getRepository($entityClass);
	if (!method_exists($repository, 'createQueryBuilder')) {
	throw new RuntimeException('The repository class must have a "createQueryBuilder" method.');
	}
	$queryBuilder = $repository->createQueryBuilder('o');

(Same for Item Providers and ODM Providers)

If I understand the code correctly, I have to add a nullable option createQueryBuilderMethod to ApiPlatform\Doctrine\Common\State\Options, and than fallback to createQueryBuilder where it's used in the current codebase.

My questions are:

1. Am I correct that "state options" is the right place? If so, can you confirm that no changes is required to the API metadata (and factories)?
2. Have you any recommendation for testing this changes? I see only the CollectionProviderTests and ItemProviderTest that seems related

Thank you!

[soyuka]

#7115 this answers what you need right?

[giosh94mhz]

Yes, precisely 😄 Sorry, I didn't find it before opening the issue.

I checked the code and it's very similar to what I was attempting locally.

I see that the issue is one year old, is that because of drawbacks or something? Is there any way I can help with that?