Timezone

Timezone

New in version 4.3: The Timezone constraint was introduced in Symfony 4.3.

Validates that a value is a valid timezone identifier (e.g. Europe/Paris).

Basic Usage

Suppose you have a UserSettings class, with a timezone field that is a string which contains any of the PHP timezone identifiers (e.g. America/New_York):

• Annotations

  // src/Entity/UserSettings.php
  namespace App\Entity;
  use Symfony\Component\Validator\Constraints as Assert;
  class UserSettings
  {
      /**
       * @Assert\Timezone
       */
      protected $timezone;
  }

• YAML

  # config/validator/validation.yaml
  App\Entity\UserSettings:
      properties:
          timezone:
              - Timezone: ~

• XML

  <!-- 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\UserSettings">
          <property name="timezone">
              <constraint name="Timezone"/>
          </property>
      </class>
  </constraint-mapping>

• PHP

  // src/Entity/UserSettings.php
  namespace App\Entity;
  use Symfony\Component\Validator\Constraints as Assert;
  use Symfony\Component\Validator\Mapping\ClassMetadata;
  class UserSettings
  {
      public static function loadValidatorMetadata(ClassMetadata $metadata)
      {
          $metadata->addPropertyConstraint('timezone', new Assert\Timezone());
      }
  }

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

countryCode

type: string default: null

If the zone option is set to \DateTimeZone::PER_COUNTRY, this option restricts the valid timezone identifiers to the ones that belong to the given country.

The value of this option must be a valid ISO 3166-1 alpha-2 country code (e.g. CN for China).

groups

type: array | string

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

intlCompatible

type: boolean default: false

This constraint considers valid both the PHP timezone identifiers and the ICU timezones provided by Symfony’s Intl component

However, the timezones provided by the Intl component can be different from the timezones provided by PHP’s Intl extension (because they use different ICU versions). If this option is set to true, this constraint only considers valid the values compatible with the PHP \IntlTimeZone::createTimeZone() method.

message

type: string default: This value is not a valid timezone.

This message is shown if the underlying data is not a valid timezone identifier.

You can use the following parameters in this message:

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.

zone

type: string default: \DateTimeZone::ALL

Set this option to any of the following constants to restrict the valid timezone identifiers to the ones that belong to that geographical zone:

• \DateTimeZone::AFRICA
• \DateTimeZone::AMERICA
• \DateTimeZone::ANTARCTICA
• \DateTimeZone::ARCTIC
• \DateTimeZone::ASIA
• \DateTimeZone::ATLANTIC
• \DateTimeZone::AUSTRALIA
• \DateTimeZone::EUROPE
• \DateTimeZone::INDIAN
• \DateTimeZone::PACIFIC

In addition, there are some special zone values:

• \DateTimeZone::ALL accepts any timezone excluding deprecated timezones;
• \DateTimeZone::ALL_WITH_BC accepts any timezone including deprecated timezones;
• \DateTimeZone::PER_COUNTRY restricts the valid timezones to a certain country (which is defined using the countryCode option).

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