83 lines
2.4 KiB
PHP
83 lines
2.4 KiB
PHP
|
<?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\PropertyAccessorInterface;
|
||
|
use Symfony\Component\PropertyAccess\PropertyPath;
|
||
|
use Symfony\Component\Validator\Constraint;
|
||
|
use Symfony\Component\Validator\ConstraintValidator;
|
||
|
use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
|
||
|
use Symfony\Component\Validator\Exception\RuntimeException;
|
||
|
|
||
|
/**
|
||
|
* @author Fabien Potencier <fabien@symfony.com>
|
||
|
* @author Bernhard Schussek <bschussek@symfony.com>
|
||
|
*/
|
||
|
class ExpressionValidator extends ConstraintValidator
|
||
|
{
|
||
|
/**
|
||
|
* @var PropertyAccessorInterface
|
||
|
*/
|
||
|
private $propertyAccessor;
|
||
|
|
||
|
/**
|
||
|
* @var ExpressionLanguage
|
||
|
*/
|
||
|
private $expressionLanguage;
|
||
|
|
||
|
public function __construct(PropertyAccessorInterface $propertyAccessor)
|
||
|
{
|
||
|
$this->propertyAccessor = $propertyAccessor;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* {@inheritDoc}
|
||
|
*/
|
||
|
public function validate($value, Constraint $constraint)
|
||
|
{
|
||
|
if (null === $value || '' === $value) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
$variables = array();
|
||
|
|
||
|
if (null === $this->context->getPropertyName()) {
|
||
|
$variables['this'] = $value;
|
||
|
} else {
|
||
|
// Extract the object that the property belongs to from the object
|
||
|
// graph
|
||
|
$path = new PropertyPath($this->context->getPropertyPath());
|
||
|
$parentPath = $path->getParent();
|
||
|
$root = $this->context->getRoot();
|
||
|
|
||
|
$variables['value'] = $value;
|
||
|
$variables['this'] = $parentPath ? $this->propertyAccessor->getValue($root, $parentPath) : $root;
|
||
|
}
|
||
|
|
||
|
if (!$this->getExpressionLanguage()->evaluate($constraint->expression, $variables)) {
|
||
|
$this->context->addViolation($constraint->message);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
private function getExpressionLanguage()
|
||
|
{
|
||
|
if (null === $this->expressionLanguage) {
|
||
|
if (!class_exists('Symfony\Component\ExpressionLanguage\ExpressionLanguage')) {
|
||
|
throw new RuntimeException('Unable to use expressions as the Symfony ExpressionLanguage component is not installed.');
|
||
|
}
|
||
|
$this->expressionLanguage = new ExpressionLanguage();
|
||
|
}
|
||
|
|
||
|
return $this->expressionLanguage;
|
||
|
}
|
||
|
}
|