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Locale

Locale

Validates that a value is a valid locale.

The "value" for each locale is either the two letter ISO 639-1 language code (e.g. fr), or the language code followed by an underscore (_), then the ISO 3166-1 alpha-2 country code (e.g. fr_FR for French/France).

Applies to property or method
Options
Class Locale
Validator LocaleValidator

Basic Usage

  • Annotations
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    // src/AppBundle/Entity/User.php
    namespace AppBundle\Entity;
    
    use Symfony\Component\Validator\Constraints as Assert;
    
    class User
    {
        /**
         * @Assert\Locale
         */
         protected $locale;
    }
    
  • YAML
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    # src/AppBundle/Resources/config/validation.yml
    AppBundle\Entity\User:
        properties:
            locale:
                - Locale: ~
    
  • XML
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    <!-- 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\User">
            <property name="locale">
                <constraint name="Locale" />
            </property>
        </class>
    </constraint-mapping>
    
  • PHP
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    // src/AppBundle/Entity/User.php
    namespace AppBundle\Entity;
    
    use Symfony\Component\Validator\Mapping\ClassMetadata;
    use Symfony\Component\Validator\Constraints as Assert;
    
    class User
    {
        public static function loadValidatorMetadata(ClassMetadata $metadata)
        {
            $metadata->addPropertyConstraint('locale', new Assert\Locale());
        }
    }
    

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

message

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

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

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.