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Symfony 5: The Fast Track

A new book to learn about developing modern Symfony 5 applications.

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  3. Reference
  4. Constraints
  5. Uuid
WARNING: You are browsing the documentation for Symfony 2.5 which is not maintained anymore. Consider upgrading your projects to Symfony 4.3.

Uuid

2.5 version
Maintained
3.4 4.3 current 4.4 5.1 master 5.0
Unmaintained
2.6 2.7 2.8 3.0 3.1 3.2 3.3 4.0 4.1 4.2

Uuid

New in version 2.5: The Uuid constraint was introduced in Symfony 2.5.

Validates that a value is a valid Universally unique identifier (UUID) per RFC 4122. By default, this will validate the format according to the RFC's guidelines, but this can be relaxed to accept non-standard UUIDs that other systems (like PostgreSQL) accept. UUID versions can also be restricted using a whitelist.

Applies to property or method
Options
Class Uuid
Validator UuidValidator

Basic Usage

  • YAML
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    # src/UploadsBundle/Resources/config/validation.yml
Acme\UploadsBundle\Entity\File:
    properties:
        identifier:
            - Uuid: ~
  • Annotations
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    // src/Acme/UploadsBundle/Entity/File.php
namespace Acme\UploadsBundle\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class File
{
    /**
     * @Assert\Uuid
     */
     protected $identifier;
}
  • XML
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    <!-- src/Acme/UploadsBundle/Resources/config/validation.xml -->
<?xml version="1.0" encoding="UTF-8" ?>
<constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">

    <class name="Acme\UploadsBundle\Entity\File">
        <property name="identifier">
            <constraint name="Uuid" />
        </property>
    </class>
</constraint-mapping>
  • PHP
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    // src/Acme/UploadsBundle/Entity/File.php
namespace Acme\UploadsBundle\Entity;

use Symfony\Component\Validator\Mapping\ClassMetadata;
use Symfony\Component\Validator\Constraints as Assert;

class File
{
    public static function loadValidatorMetadata(ClassMetadata $metadata)
    {
        $metadata->addPropertyConstraint('identifier', new Assert\Uuid());
    }
}

Options

message

type: string default: This is not a valid UUID.

This message is shown if the string is not a valid UUID.

strict

type: boolean default: true

If this option is set to true the constraint will check if the UUID is formatted per the RFC's input format rules: 216fff40-98d9-11e3-a5e2-0800200c9a66. Setting this to false will allow alternate input formats like:

  • 216f-ff40-98d9-11e3-a5e2-0800-200c-9a66
  • {216fff40-98d9-11e3-a5e2-0800200c9a66}
  • 216fff4098d911e3a5e20800200c9a66

versions

type: int[] default: [1,2,3,4,5]

This option can be used to only allow specific UUID versions. Valid versions are 1 - 5. The following PHP constants can also be used:

  • Uuid::V1_MAC
  • Uuid::V2_DCE
  • Uuid::V3_MD5
  • Uuid::V4_RANDOM
  • Uuid::V5_SHA1

All five versions are allowed by default.

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.