Automattic\WooCommerce\Vendor\GraphQL\Validator\Rules

SingleFieldSubscription{} │ WC 1.0└─ ValidationRule

No Hooks.

Usage

$SingleFieldSubscription = new SingleFieldSubscription();
// use class methods

Methods

1. public getVisitor(QueryValidationContext $context)
2. public static multipleFieldsInOperation(?string $operationName)

SingleFieldSubscription{} SingleFieldSubscription{} code ^{WC 10.9.1}

class SingleFieldSubscription extends ValidationRule
{
    public function getVisitor(QueryValidationContext $context): array
    {
        return [
            NodeKind::OPERATION_DEFINITION => static function (OperationDefinitionNode $node) use ($context): VisitorOperation {
                if ($node->operation === 'subscription') {
                    $selections = $node->selectionSet->selections;

                    if (count($selections) > 1) {
                        $offendingSelections = $selections->splice(1, count($selections));

                        $context->reportError(new Error(
                            static::multipleFieldsInOperation($node->name->value ?? null),
                            $offendingSelections
                        ));
                    }
                }

                return Visitor::skipNode();
            },
        ];
    }

    public static function multipleFieldsInOperation(?string $operationName): string
    {
        if ($operationName === null) {
            return 'Anonymous Subscription must select only one top level field.';
        }

        return "Subscription \"{$operationName}\" must select only one top level field.";
    }
}