function EntityResource::doPatchIndividualRelationship
Update a to-one relationship.
Parameters
\Drupal\Core\Entity\EntityInterface $entity: The requested entity.
\Drupal\jsonapi\JsonApiResource\ResourceIdentifier[] $resource_identifiers: The client-sent resource identifiers which should be set on the given entity. Should be an empty array or an array with a single value.
\Drupal\Core\Field\FieldDefinitionInterface $field_definition: The field definition of the entity field to be updated.
Throws
\Symfony\Component\HttpKernel\Exception\BadRequestHttpException Thrown when a "to-one" relationship is not provided.
File
- 
              core/modules/ jsonapi/ src/ Controller/ EntityResource.php, line 718 
Class
- EntityResource
- Process all entity requests.
Namespace
Drupal\jsonapi\ControllerCode
protected function doPatchIndividualRelationship(EntityInterface $entity, array $resource_identifiers, FieldDefinitionInterface $field_definition) {
  if (count($resource_identifiers) > 1) {
    throw new BadRequestHttpException(sprintf('Provide a single relationship so to-one relationship fields (%s).', $field_definition->getName()));
  }
  $this->doPatchMultipleRelationship($entity, $resource_identifiers, $field_definition);
}Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.
