wiki/content/20201113172517-type_constraint.md

date	id	title
20201113	942ca5cd-5ca6-4ec9-9dd6-652a0b791245	Type Constraint

Description

Validates that a given value is of a specific type. This type can be any of the valid PHP types¹, any of the PHP ctype functions² (e.g. alnum, alpha, digit, etc.) and also the FQCN of any class

Syntax

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

use Symfony\Component\Validator\Constraints as Assert;

class Author
{
    /**
     * @Assert\Type("Ramsey\Uuid\UuidInterface")
     */
    protected $id;

    /**
     * @Assert\Type("string")
     */
    protected $firstName;

    // ...
}

Changelog

• Type Constraint Can Be An Array of Types

Footnotes

---

1. https://www.php.net/manual/en/language.types.intro.php ↩︎

2. https://php.net/ref.ctype ↩︎