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[READ-ONLY] Subtree split of the Symfony Validator Component -- clone into Symfony/Component/ (master at symfony/symfony)

Merge branch '2.8'

* 2.8:
  fixed CS
  fixed CS
  fixed CS
  Fix WebProfilerBundle compatiblity with HttpKernel < 2.7
  [Validator] Deprecated PHP7-incompatible constraints and related validators
  [DebugBundle] Allow alternative destination for dumps
  [DebugBundle] Use output mechanism of dumpers instead of echoing
  [DebugBundle] Always collect dumps
  [FrameworkBundle] Applied new styles to the config:debug & config:dump-reference commands
  Fix tests in HHVM
  CS: Pre incrementation/decrementation should be used if possible

Failed to load latest commit information.
Constraints fixed CS
Context Complete the removal of API versions in the validator component
Exception [Validator] Improved performance of *ContextualValidator::validate()
Mapping Merge branch '2.6' into 2.7
Resources/translations Merge branch '2.6' into 2.7
Tests Merge branch '2.8'
Util [Validator] Property paths starting with 0 are broken.
Validator [Validator] Property paths starting with 0 are broken.
Violation Merge branch '2.6' into 2.7
.gitignore Added missing files .gitignore [Validator] Deprecated PHP7-incompatible constraints and related vali…
ClassBasedInterface.php Normalized @deprecated annotations.
Constraint.php Merge branch '2.3' into 2.6
ConstraintValidator.php [Validator] adds more deprecation notices.
ConstraintValidatorFactory.php Merge branch '2.4'
ConstraintValidatorFactoryInterface.php removed unneeded use statements
ConstraintValidatorInterface.php [Validator] Refactored the GraphWalker into an implementation of the …
ConstraintViolation.php Normalized @deprecated annotations.
ConstraintViolationInterface.php Fixes various phpdoc and coding standards.
ConstraintViolationList.php made {@inheritdoc} annotations consistent across the board
ConstraintViolationListInterface.php Docblock fixes
DefaultTranslator.php Merge branch '2.6' into 2.7
ExecutionContext.php Normalizes deprecation notice messages.
ExecutionContextInterface.php Fixes more deprecation notices as per @stof review.
GlobalExecutionContextInterface.php Normalized @deprecated annotations.
GroupSequenceProviderInterface.php fixed CS
LICENSE Updated copyright to 2015
MetadataFactoryInterface.php Normalized @deprecated annotations.
MetadataInterface.php Normalized @deprecated annotations.
ObjectInitializerInterface.php [Validator] Refactored the GraphWalker into an implementation of the …
PropertyMetadataContainerInterface.php Normalized @deprecated annotations.
PropertyMetadataInterface.php Normalized @deprecated annotations. Merge branch '2.8'
Validation.php removed the Validator BC layer for PHP < 5.3.9
ValidationVisitor.php [Validator] adds more deprecation notices.
ValidationVisitorInterface.php [Validator] adds more deprecation notices.
Validator.php Normalized @deprecated annotations.
ValidatorBuilder.php [Validator] deprecated API version
ValidatorBuilderInterface.php [Validator] deprecated API version
ValidatorInterface.php Merge branch '2.6' into 2.7
composer.json Merge branch '2.8'
phpunit.xml.dist [2.3] require-dev PHPUnit bridge

Validator Component

This component is based on the JSR-303 Bean Validation specification and enables specifying validation rules for classes using XML, YAML, PHP or annotations, which can then be checked against instances of these classes.


The component provides "validation constraints", which are simple objects containing the rules for the validation. Let's validate a simple string as an example:

use Symfony\Component\Validator\Validation;
use Symfony\Component\Validator\Constraints\Length;

$validator = Validation::createValidator();

$violations = $validator->validateValue('Bernhard', new Length(array('min' => 10)));

This validation will fail because the given string is shorter than ten characters. The precise errors, here called "constraint violations", are returned by the validator. You can analyze these or return them to the user. If the violation list is empty, validation succeeded.

Validation of arrays is possible using the Collection constraint:

use Symfony\Component\Validator\Validation;
use Symfony\Component\Validator\Constraints as Assert;

$validator = Validation::createValidator();

$constraint = new Assert\Collection(array(
    'name' => new Assert\Collection(array(
        'first_name' => new Assert\Length(array('min' => 101)),
        'last_name' => new Assert\Length(array('min' => 1)),
    'email' => new Assert\Email(),
    'simple' => new Assert\Length(array('min' => 102)),
    'gender' => new Assert\Choice(array(3, 4)),
    'file' => new Assert\File(),
    'password' => new Assert\Length(array('min' => 60)),

$violations = $validator->validateValue($input, $constraint);

Again, the validator returns the list of violations.

Validation of objects is possible using "constraint mapping". With such a mapping you can put constraints onto properties and objects of classes. Whenever an object of this class is validated, its properties and method results are matched against the constraints.

use Symfony\Component\Validator\Validation;
use Symfony\Component\Validator\Constraints as Assert;

class User
     * @Assert\Length(min = 3)
     * @Assert\NotBlank
    private $name;

     * @Assert\Email
     * @Assert\NotBlank
    private $email;

    public function __construct($name, $email)
        $this->name = $name;
        $this->email = $email;

     * @Assert\IsTrue(message = "The user should have a Google Mail account")
    public function isGmailUser()
        return false !== strpos($this->email, '');

$validator = Validation::createValidatorBuilder()

$user = new User('John Doe', '');

$violations = $validator->validate($user);

This example uses the annotation support of Doctrine Common to map constraints to properties and methods. You can also map constraints using XML, YAML or plain PHP, if you dislike annotations or don't want to include Doctrine. Check the documentation for more information about these drivers.


Silex integration:


JSR-303 Specification:

You can run the unit tests with the following command:

$ cd path/to/Symfony/Component/Validator/
$ composer install
$ phpunit
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