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<?php |
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declare(strict_types=1); |
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namespace Overblog\GraphQLBundle\Validator\Constraints; |
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use Overblog\GraphQLBundle\Definition\GraphQLServices; |
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use Overblog\GraphQLBundle\ExpressionLanguage\ExpressionLanguage; |
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use Overblog\GraphQLBundle\Generator\TypeGenerator; |
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use Overblog\GraphQLBundle\Validator\ValidationNode; |
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use Symfony\Component\Validator\Constraint; |
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use Symfony\Component\Validator\Constraints\Expression; |
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use Symfony\Component\Validator\Exception\UnexpectedTypeException; |
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class ExpressionValidator extends \Symfony\Component\Validator\Constraints\ExpressionValidator |
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{ |
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private ExpressionLanguage $expressionLanguage; |
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private GraphQLServices $graphQLServices; |
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public function __construct(ExpressionLanguage $expressionLanguage, GraphQLServices $graphQLServices) |
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{ |
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$this->expressionLanguage = $expressionLanguage; |
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$this->graphQLServices = $graphQLServices; |
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parent::__construct($expressionLanguage); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function validate($value, Constraint $constraint): void |
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{ |
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if (!$constraint instanceof Expression) { |
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throw new UnexpectedTypeException($constraint, __NAMESPACE__.'\Expression'); |
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} |
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$variables = $constraint->values; |
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$variables['value'] = $value; |
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$variables[TypeGenerator::GRAPHQL_SERVICES] = $this->graphQLServices; |
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$object = $this->context->getObject(); |
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$variables['this'] = $object; |
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if ($object instanceof ValidationNode) { |
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$variables['parentValue'] = $object->getResolverArg('value'); |
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$variables['context'] = $object->getResolverArg('context'); |
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$variables['args'] = $object->getResolverArg('args'); |
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$variables['info'] = $object->getResolverArg('info'); |
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} |
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// Make all tagged GraphQL public services available in the expression constraint |
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$this->addGlobalVariables($constraint->expression, $variables); |
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if (!$this->expressionLanguage->evaluate($constraint->expression, $variables)) { |
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$this->context->buildViolation($constraint->message) |
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->setParameter('{{ value }}', $this->formatValue($value, self::OBJECT_TO_STRING)) |
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->setCode(Expression::EXPRESSION_FAILED_ERROR) |
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->addViolation(); |
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} |
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} |
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/** |
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* @param string|\Symfony\Component\ExpressionLanguage\Expression $expression |
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*/ |
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private function addGlobalVariables($expression, array &$variables): void |
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{ |
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$globalVariables = $this->expressionLanguage->getGlobalNames(); |
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foreach (ExpressionLanguage::extractExpressionVarNames($expression) as $extractExpressionVarName) { |
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if ( |
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isset($variables[$extractExpressionVarName]) |
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|| !$this->graphQLServices->has($extractExpressionVarName) |
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|| !in_array($extractExpressionVarName, $globalVariables) |
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) { |
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continue; |
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} |
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$variables[$extractExpressionVarName] = $this->graphQLServices->get($extractExpressionVarName); |
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} |
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} |
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} |
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overblog /
GraphQLBundle
