Skip to content
  • About
    • What is Symfony?
    • Community
    • News
    • Contributing
    • Support
  • Documentation
    • Symfony Docs
    • Symfony Book
    • Screencasts
    • Symfony Bundles
    • Symfony Cloud
    • Training
  • Services
    • SensioLabs Professional services to help you with Symfony
    • 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
    • Blackfire Profile and monitor performance of your apps
  • Other
  • Blog
  • Download
sponsored by SensioLabs
  1. Home
  2. Documentation
  3. Reference
  4. Constraints
  5. IsTrue
  • Documentation
  • Book
  • Reference
  • Bundles
  • Cloud

Table of Contents

  • Basic Usage
  • Options
    • groups
    • message
    • payload

IsTrue

Edit this page

Warning: You are browsing the documentation for Symfony 3.4, which is no longer maintained.

Read the updated version of this page for Symfony 6.2 (the current stable version).

IsTrue

Validates that a value is true. Specifically, this checks if the value is exactly true, exactly the integer 1, or exactly the string "1".

Also see IsFalse.

Applies to property or method
Options
  • groups
  • message
  • payload
Class IsTrue
Validator IsTrueValidator

Basic Usage

This constraint can be applied to properties (e.g. a termsAccepted property on a registration model) and methods. It's most powerful in the latter case, where you can assert that a method returns a true value. For example, suppose you have the following method:

1
2
3
4
5
6
7
8
9
10
11
12
// src/AppBundle/Entity/Author.php
namespace AppBundle\Entity;

class Author
{
    protected $token;

    public function isTokenValid()
    {
        return $this->token == $this->generateToken();
    }
}

Then you can validate this method with IsTrue as follows:

  • Annotations
  • YAML
  • XML
  • PHP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
// src/AppBundle/Entity/Author.php
namespace AppBundle\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class Author
{
    protected $token;

    /**
     * @Assert\IsTrue(message="The token is invalid.")
     */
    public function isTokenValid()
    {
        return $this->token == $this->generateToken();
    }
}
1
2
3
4
5
6
# src/AppBundle/Resources/config/validation.yml
AppBundle\Entity\Author:
    getters:
        tokenValid:
            - 'IsTrue':
                message: The token is invalid.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
<!-- src/Acme/Blogbundle/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 https://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">

    <class name="AppBundle\Entity\Author">
        <getter property="tokenValid">
            <constraint name="IsTrue">
                <option name="message">The token is invalid.</option>
            </constraint>
        </getter>
    </class>
</constraint-mapping>
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\IsTrue;
use Symfony\Component\Validator\Mapping\ClassMetadata;

class Author
{
    public static function loadValidatorMetadata(ClassMetadata $metadata)
    {
        $metadata->addGetterConstraint('tokenValid', new IsTrue([
            'message' => 'The token is invalid.',
        ]));
    }

    public function isTokenValid()
    {
        return $this->token == $this->generateToken();
    }
}

If the isTokenValid() returns false, the validation will fail.

Options

groups

type: array | string

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

message

type: string default: This value should be true.

This message is shown if the underlying data is not true.

You can use the following parameters in this message:

Parameter Description
{{ value }} The current (invalid) value

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.
TOC
    Version
    We stand with Ukraine.
    Version:
    Symfony Code Performance Profiling

    Symfony Code Performance Profiling

    Code consumes server resources. Blackfire tells you how

    Code consumes server resources. Blackfire tells you how

    Symfony footer

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

    Avatar of Christophe Deliens, a Symfony contributor

    Thanks Christophe Deliens (@cdeliens) for being a Symfony contributor

    2 commits • 7 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 Algolia