fix(graphql): query nullish ManyToOne-Relation

Author: josef.wagner

src/GraphQl/Resolver/Factory/ResolverFactory.php

@@ -17,8 +17,8 @@
 use ApiPlatform\Metadata\GraphQl\Mutation;
 use ApiPlatform\Metadata\GraphQl\Operation;
 use ApiPlatform\Metadata\GraphQl\Query;
-use ApiPlatform\State\Pagination\ArrayPaginator;
 use ApiPlatform\Metadata\Property\Factory\PropertyMetadataFactoryInterface;
+use ApiPlatform\State\Pagination\ArrayPaginator;
 use ApiPlatform\State\ProcessorInterface;
 use ApiPlatform\State\ProviderInterface;
 use GraphQL\Type\Definition\ResolveInfo;
@@ -34,17 +34,19 @@ public function __construct(
  public function __invoke(?string $resourceClass = null, ?string $rootClass = null, ?Operation $operation = null, ?PropertyMetadataFactoryInterface $propertyMetadataFactory = null): callable
  {
  return function (?array $source, array $args, $context, ResolveInfo $info) use ($resourceClass, $rootClass, $operation, $propertyMetadataFactory) {
- if ($body = $source[$info->fieldName] ?? null) {
- // special treatment for nested resources without a resolver/provider
-
- return $body;
- }
-
  if (\array_key_exists($info->fieldName, $source ?? [])) {
  $body = $source[$info->fieldName];
 
+ // special treatment for nested resources without a resolver/provider
  if ($operation instanceof Query && $operation->getNested() && !$operation->getResolver() && (!$operation->getProvider() || NoopProvider::class === $operation->getProvider())) {
- return $this->resolve($source, $args, $info, $rootClass, $operation, new ArrayPaginator($body, 0, \count($body)));
+ return \is_array($body) ? $this->resolve(
+ $source,
+ $args,
+ $info,
+ $rootClass,
+ $operation,
+ new ArrayPaginator($body, 0, \count($body))
+ ) : $body;
  }
 
  $propertyMetadata = $rootClass ? $propertyMetadataFactory?->create($rootClass, $info->fieldName) : null;