Country

Validates that a value is a valid ISO 3166-1 alpha-2 country code.

Applies to	property or method
Class	Country
Validator	CountryValidator

Basic Usage

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

use Symfony\Component\Validator\Constraints as Assert;

class User
{
    #[Assert\Country]
    protected string $country;
}
    

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        # config/validator/validation.yaml
App\Entity\User:
    properties:
        country:
            - Country: ~
    

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        <!-- 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\User">
        <property name="country">
            <constraint name="Country"/>
        </property>
    </class>
</constraint-mapping>
    

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

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

class User
{
    // ...

    public static function loadValidationMetadata(ClassMetadata $metadata): void
    {
        $metadata->addPropertyConstraint('country', new Assert\Country());
    }
}
    

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

alpha3

type: boolean default: false

If this option is true, the constraint checks that the value is a ISO 3166-1 alpha-3 three-letter code (e.g. France = FRA) instead of the default ISO 3166-1 alpha-2 two-letter code (e.g. France = FR).

`groups`

type: array | string default: null

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

`message`

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

This message is shown if the string is not a valid country code.

You can use the following parameters in this message:

Parameter	Description
`{{ value }}`	The current (invalid) country code

`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.

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