jsonapi_test_field_access.module

<?php


/**
 * @file
 * Contains hook implementations for testing the JSON:API module.
 */
use Drupal\Core\Field\FieldDefinitionInterface;
use Drupal\Core\Access\AccessResult;
use Drupal\Core\Session\AccountInterface;

/**
 * Implements hook_entity_field_access().
 */
function jsonapi_test_field_access_entity_field_access($operation, FieldDefinitionInterface $field_definition, AccountInterface $account) {
    // @see \Drupal\Tests\jsonapi\Functional\ResourceTestBase::testRelationships().
    if ($field_definition->getName() === 'field_jsonapi_test_entity_ref') {
        // Forbid access in all cases.
        $permission = "field_jsonapi_test_entity_ref {$operation} access";
        $access_result = $account->hasPermission($permission) ? AccessResult::allowed() : AccessResult::forbidden("The '{$permission}' permission is required.");
        return $access_result->addCacheContexts([
            'user.permissions',
        ]);
    }
    // No opinion.
    return AccessResult::neutral();
}