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<?php
declare(strict_types=1);
namespace Yiisoft\Validator\Rule;
use Yiisoft\Validator\HasValidationMessage;
use Yiisoft\Validator\Rule;
use Yiisoft\Validator\Result;
use Yiisoft\Validator\DataSetInterface;
use JsonException;
/**
* JsonValidator validates that the attribute value is a valid json
*/
class Json extends Rule
{
use HasValidationMessage;
private string $message = 'The value is not JSON.';
protected function validateValue($value, DataSetInterface $dataSet = null): Result
$result = new Result();
if (!$this->isValidJson($value)) {
$result->addError($this->translateMessage($this->message));
}
return $result;
private function isValidJson($value): bool
if (!is_string($value)) {
return false;
try {
json_decode($value, false, 512, JSON_THROW_ON_ERROR);
} catch (JsonException $e) {
return true;
yiisoft /
validator
