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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Validator\Constraints;
use Symfony\Component\PropertyAccess\Exception\NoSuchPropertyException;
use Symfony\Component\PropertyAccess\PropertyAccess;
use Symfony\Component\PropertyAccess\PropertyAccessorInterface;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;
/**
* Provides a base class for the validation of property comparisons.
*
* @author Daniel Holmes <daniel@danielholmes.org>
* @author Bernhard Schussek <bschussek@gmail.com>
*/
abstract class AbstractComparisonValidator extends ConstraintValidator
{
private $propertyAccessor;
public function __construct(PropertyAccessorInterface $propertyAccessor = null)
{
$this->propertyAccessor = $propertyAccessor;
}
/**
* {@inheritdoc}
*/
public function validate($value, Constraint $constraint)
{
if (!$constraint instanceof AbstractComparison) {
throw new UnexpectedTypeException($constraint, __NAMESPACE__.'\AbstractComparison');
}
if (null === $value) {
return;
}
if ($path = $constraint->propertyPath) {
if (null === $object = $this->context->getObject()) {
return;
}
try {
$comparedValue = $this->getPropertyAccessor()->getValue($object, $path);
} catch (NoSuchPropertyException $e) {
throw new ConstraintDefinitionException(sprintf('Invalid property path "%s" provided to "%s" constraint: %s', $path, \get_class($constraint), $e->getMessage()), 0, $e);
}
} else {
$comparedValue = $constraint->value;
}
// Convert strings to DateTimes if comparing another DateTime
// This allows to compare with any date/time value supported by
// the DateTime constructor:
// http://php.net/manual/en/datetime.formats.php
if (\is_string($comparedValue)) {
if ($value instanceof \DateTimeImmutable) {
// If $value is immutable, convert the compared value to a
// DateTimeImmutable too
$comparedValue = new \DateTimeImmutable($comparedValue);
} elseif ($value instanceof \DateTimeInterface) {
// Otherwise use DateTime
$comparedValue = new \DateTime($comparedValue);
}
}
if (!$this->compareValues($value, $comparedValue)) {
$this->context->buildViolation($constraint->message)
->setParameter('{{ value }}', $this->formatValue($value, self::OBJECT_TO_STRING | self::PRETTY_DATE))
->setParameter('{{ compared_value }}', $this->formatValue($comparedValue, self::OBJECT_TO_STRING | self::PRETTY_DATE))
->setParameter('{{ compared_value_type }}', $this->formatTypeOf($comparedValue))
->setCode($this->getErrorCode())
->addViolation();
}
}
private function getPropertyAccessor()
{
if (null === $this->propertyAccessor) {
$this->propertyAccessor = PropertyAccess::createPropertyAccessor();
}
return $this->propertyAccessor;
}
/**
* Compares the two given values to find if their relationship is valid.
*
* @param mixed $value1 The first value to compare
* @param mixed $value2 The second value to compare
*
* @return bool true if the relationship is valid, false otherwise
*/
abstract protected function compareValues($value1, $value2);
/**
* Returns the error code used if the comparison fails.
*
* @return string|null The error code or `null` if no code should be set
*/
protected function getErrorCode()
{
}
}
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