580e1a7b46
The ExpressionValidator was incorrectly skipping validation of null or empty string values.
116 lines
3.9 KiB
PHP
116 lines
3.9 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Validator\Constraints;
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use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
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use Symfony\Component\PropertyAccess\PropertyAccess;
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use Symfony\Component\PropertyAccess\PropertyAccessorInterface;
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use Symfony\Component\PropertyAccess\PropertyPath;
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use Symfony\Component\Validator\Constraint;
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use Symfony\Component\Validator\ConstraintValidator;
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use Symfony\Component\Validator\Context\ExecutionContextInterface;
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use Symfony\Component\Validator\Exception\RuntimeException;
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use Symfony\Component\Validator\Exception\UnexpectedTypeException;
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/**
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* @author Fabien Potencier <fabien@symfony.com>
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* @author Bernhard Schussek <bschussek@symfony.com>
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*/
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class ExpressionValidator extends ConstraintValidator
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{
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/**
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* @var PropertyAccessorInterface
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*/
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private $propertyAccessor;
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/**
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* @var ExpressionLanguage
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*/
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private $expressionLanguage;
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/**
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* @param PropertyAccessorInterface|null $propertyAccessor Optional as of Symfony 2.5
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*
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* @throws UnexpectedTypeException If the property accessor is invalid
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*/
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public function __construct($propertyAccessor = null)
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{
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if (null !== $propertyAccessor && !$propertyAccessor instanceof PropertyAccessorInterface) {
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throw new UnexpectedTypeException($propertyAccessor, 'null or \Symfony\Component\PropertyAccess\PropertyAccessorInterface');
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}
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$this->propertyAccessor = $propertyAccessor;
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}
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/**
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* {@inheritdoc}
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*/
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public function validate($value, Constraint $constraint)
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{
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if (!$constraint instanceof Expression) {
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throw new UnexpectedTypeException($constraint, __NAMESPACE__.'\Expression');
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}
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$variables = array();
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// Symfony 2.5+
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if ($this->context instanceof ExecutionContextInterface) {
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$variables['value'] = $value;
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$variables['this'] = $this->context->getObject();
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} elseif (null === $this->context->getPropertyName()) {
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$variables['value'] = $value;
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$variables['this'] = $value;
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} else {
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$root = $this->context->getRoot();
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$variables['value'] = $value;
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if (is_object($root)) {
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// Extract the object that the property belongs to from the object
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// graph
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$path = new PropertyPath($this->context->getPropertyPath());
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$parentPath = $path->getParent();
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$variables['this'] = $parentPath ? $this->getPropertyAccessor()->getValue($root, $parentPath) : $root;
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} else {
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$variables['this'] = null;
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}
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}
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if (!$this->getExpressionLanguage()->evaluate($constraint->expression, $variables)) {
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$this->context->addViolation($constraint->message);
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}
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}
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private function getExpressionLanguage()
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{
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if (null === $this->expressionLanguage) {
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if (!class_exists('Symfony\Component\ExpressionLanguage\ExpressionLanguage')) {
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throw new RuntimeException('Unable to use expressions as the Symfony ExpressionLanguage component is not installed.');
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}
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$this->expressionLanguage = new ExpressionLanguage();
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}
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return $this->expressionLanguage;
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}
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private function getPropertyAccessor()
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{
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if (null === $this->propertyAccessor) {
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if (!class_exists('Symfony\Component\PropertyAccess\PropertyAccess')) {
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throw new RuntimeException('Unable to use expressions as the Symfony PropertyAccess component is not installed.');
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}
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$this->propertyAccessor = PropertyAccess::createPropertyAccessor();
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}
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return $this->propertyAccessor;
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}
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}
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