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<?php
namespace DeInternetJongens\LighthouseUtils\Schema\Scalars;
use Carbon\Carbon;
use GraphQL\Error\Error;
use GraphQL\Language\AST\Node;
use GraphQL\Language\AST\StringValueNode;
use GraphQL\Type\Definition\LeafType;
use GraphQL\Type\Definition\ScalarType;
use GraphQL\Utils\Utils;
use InvalidArgumentException;
class Date extends ScalarType
{
private const FORMAT = 'Y-m-d';
/** @var string */
public $name = 'Date';
public $description = 'A date string with format Y-m-d. Example: "2018-01-01"';
/**
* @inheritdoc
*/
public function serialize($value)
return $value->format(self::FORMAT);
}
public function parseValue($value)
try {
return Carbon::createFromFormat('' . self::FORMAT, $value);
} catch (InvalidArgumentException $exception) {
throw new Error(Utils::printSafeJson($exception->getMessage()));
public function parseLiteral($valueNode, array $variables = null)
if (! $valueNode instanceof StringValueNode) {
throw new Error('Query error: Can only parse strings got: ' . $valueNode->kind, [$valueNode]);
return $this->parseValue($valueNode->value);