Skip to content
  • About
    • What is Symfony?
    • Community
    • News
    • Contributing
    • Support
  • Documentation
    • Symfony Docs
    • Symfony Book
    • Screencasts
    • Symfony Bundles
    • Symfony Cloud
    • Training
  • Services
    • Platform.sh for Symfony Best platform to deploy Symfony apps
    • SymfonyInsight Automatic quality checks for your apps
    • Symfony Certification Prove your knowledge and boost your career
    • SensioLabs Professional services to help you with Symfony
    • Blackfire Profile and monitor performance of your apps
  • Other
  • Blog
  • Download
sponsored by SensioLabs
  1. Home
  2. Documentation
  3. Reference
  4. Constraints
  5. Type
  • Documentation
  • Book
  • Reference
  • Bundles
  • Cloud

Table of Contents

  • Basic Usage
  • Options
    • type
    • message
    • payload

Type

Edit this page

Warning: You are browsing the documentation for Symfony 2.7, which is no longer maintained.

Read the updated version of this page for Symfony 6.3 (the current stable version).

Type

Validates that a value is of a specific data type. For example, if a variable should be an array, you can use this constraint with the array type option to validate this.

Applies to property or method
Options
  • type
  • message
  • payload
Class Type
Validator TypeValidator

Basic Usage

This will check if firstName is of type string and that age is an integer.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
// src/AppBundle/Entity/Author.php
namespace AppBundle\Entity;

use Symfony\Component\Validator\Constraints as Assert;

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

    /**
     * @Assert\Type(
     *     type="integer",
     *     message="The value {{ value }} is not a valid {{ type }}."
     * )
     */
    protected $age;
}
1
2
3
4
5
6
7
8
9
10
# src/AppBundle/Resources/config/validation.yml
AppBundle\Entity\Author:
    properties:
        firstName:
            - Type: string

        age:
            - Type:
                type: integer
                message: The value {{ value }} is not a valid {{ type }}.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
<!-- src/AppBundle/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="AppBundle\Entity\Author">
        <property name="firstName">
            <constraint name="Type">
                <option name="type">string</option>
            </constraint>
        </property>
        <property name="age">
            <constraint name="Type">
                <option name="type">integer</option>
                <option name="message">The value {{ value }} is not a valid {{ type }}.</option>
            </constraint>
        </property>
    </class>
</constraint-mapping>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
// src/AppBundle/Entity/Author.php
namespace AppBundle\Entity;

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

class Author
{
    public static function loadValidatorMetadata(ClassMetadata $metadata)
    {
        $metadata->addPropertyConstraint('firstName', new Assert\Type('string'));

        $metadata->addPropertyConstraint('age', new Assert\Type(array(
            'type'    => 'integer',
            'message' => 'The value {{ value }} is not a valid {{ type }}.',
        )));
    }
}

Options

type

type: string [default option]

This required option is the fully qualified class name or one of the PHP datatypes as determined by PHP's is_() functions.

  • array
  • bool
  • callable
  • float
  • double
  • int
  • integer
  • long
  • null
  • numeric
  • object
  • real
  • resource
  • scalar
  • string

Also, you can use ctype_() functions from corresponding built-in PHP extension. Consider a list of ctype functions:

  • alnum
  • alpha
  • cntrl
  • digit
  • graph
  • lower
  • print
  • punct
  • space
  • upper
  • xdigit

Make sure that the proper locale is set before using one of these.

message

type: string default: This value should be of type {{ type }}.

The message if the underlying data is not of the given type.

payload

type: mixed default: null

2.6

The payload option was introduced in Symfony 2.6.

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.
TOC
    Version
    We stand with Ukraine.
    Version:
    Save your teams and projects before they sink

    Save your teams and projects before they sink

    Measure & Improve Symfony Code Performance

    Measure & Improve Symfony Code Performance

    Symfony footer

    ↓ Our footer now uses the colors of the Ukrainian flag because Symfony stands with the people of Ukraine.

    Avatar of gnito-org, a Symfony contributor

    Thanks gnito-org for being a Symfony contributor

    74 commits • 732 lines changed

    View all contributors that help us make Symfony

    Become a Symfony contributor

    Be an active part of the community and contribute ideas, code and bug fixes. Both experts and newcomers are welcome.

    Learn how to contribute

    Symfony™ is a trademark of Symfony SAS. All rights reserved.

    • What is Symfony?

      • Symfony at a Glance
      • Symfony Components
      • Case Studies
      • Symfony Releases
      • Security Policy
      • Logo & Screenshots
      • Trademark & Licenses
      • symfony1 Legacy
    • Learn Symfony

      • Symfony Docs
      • Symfony Book
      • Reference
      • Bundles
      • Best Practices
      • Training
      • eLearning Platform
      • Certification
    • Screencasts

      • Learn Symfony
      • Learn PHP
      • Learn JavaScript
      • Learn Drupal
      • Learn RESTful APIs
    • Community

      • SymfonyConnect
      • Support
      • How to be Involved
      • Code of Conduct
      • Events & Meetups
      • Projects using Symfony
      • Downloads Stats
      • Contributors
      • Backers
    • Blog

      • Events & Meetups
      • A week of symfony
      • Case studies
      • Cloud
      • Community
      • Conferences
      • Diversity
      • Documentation
      • Living on the edge
      • Releases
      • Security Advisories
      • SymfonyInsight
      • Twig
      • SensioLabs
    • Services

      • SensioLabs services
      • Train developers
      • Manage your project quality
      • Improve your project performance
      • Host Symfony projects

      Deployed on

    Follow Symfony

    Search by Meilisearch