ULID

Validates that a value is a valid Universally Unique Lexicographically Sortable Identifier (ULID).

Applies to	property or method
Class	Ulid
Validator	UlidValidator

Basic Usage

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        // src/Entity/File.php
namespace App\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class File
{
    #[Assert\Ulid]
    protected string $identifier;
}
    

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        # config/validator/validation.yaml
App\Entity\File:
    properties:
        identifier:
            - Ulid: ~
    

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        <!-- config/validator/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 https://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">

    <class name="App\Entity\File">
        <property name="identifier">
            <constraint name="Ulid"/>
        </property>
    </class>
</constraint-mapping>
    

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        // src/Entity/File.php
namespace App\Entity;

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

class File
{
    // ...

    public static function loadValidatorMetadata(ClassMetadata $metadata): void
    {
        $metadata->addPropertyConstraint('identifier', new Assert\Ulid());
    }
}
    

Note

As with most of the other constraints, null and empty strings are considered valid values. This is to allow them to be optional values. If the value is mandatory, a common solution is to combine this constraint with NotBlank.

Options

`format`

type: string default: Ulid::FORMAT_BASE_32

The format of the ULID to validate. The following formats are available:

Ulid::FORMAT_BASE_32: The ULID is encoded in base32 (default)
Ulid::FORMAT_BASE_58: The ULID is encoded in base58
Ulid::FORMAT_RFC4122: The ULID is encoded in the RFC 4122 format

7.2

The format option was introduced in Symfony 7.2.

`groups`

type: array | string default: null

It defines the validation group or groups of this constraint. Read more about validation groups.

`message`

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

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

You can use the following parameters in this message:

Parameter	Description
`{{ value }}`	The current (invalid) value
`{{ label }}`	Corresponding form field label

`normalizer`

type: a PHP callable default: null

This option allows to define the PHP callable applied to the given value before checking if it is valid.

For example, you may want to pass the 'trim' string to apply the trim PHP function in order to ignore leading and trailing whitespace during validation.

`payload`

type: mixed default: null

This option can be used to attach arbitrary domain-specific data to a constraint. The configured payload is not used by the Validator component, but its processing is completely up to you.

For example, you may want to use several error levels to present failed constraints differently in the front-end depending on the severity of the error.

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

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