CardScheme

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This constraint ensures that a credit card number is valid for a given credit card company. It can be used to validate the number before trying to initiate a payment through a payment gateway.

Applies to	property or method
Class	CardScheme
Validator	CardSchemeValidator

Basic Usage

To use the CardScheme validator, apply it to a property or method on an object that will contain a credit card number.

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

use Symfony\Component\Validator\Constraints as Assert;

class Transaction
{
    #[Assert\CardScheme(
        schemes: [Assert\CardScheme::VISA],
        message: 'Your credit card number is invalid.',
    )]
    protected string $cardNumber;
}
    

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        # config/validator/validation.yaml
App\Entity\Transaction:
    properties:
        cardNumber:
            - CardScheme:
                schemes: [VISA]
                message: Your credit card number is invalid.
    

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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\Transaction">
        <property name="cardNumber">
            <constraint name="CardScheme">
                <option name="schemes">
                    <value>VISA</value>
                </option>
                <option name="message">Your credit card number is invalid.</option>
            </constraint>
        </property>
    </class>
</constraint-mapping>
    

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

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

class Transaction
{
    public static function loadValidatorMetadata(ClassMetadata $metadata): void
    {
        $metadata->addPropertyConstraint('cardNumber', new Assert\CardScheme([
            'schemes' => [
                Assert\CardScheme::VISA,
            ],
            'message' => 'Your credit card number is invalid.',
        ]));
    }
}
    

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.

Available Options

`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: Unsupported card type or invalid card number.

The message shown when the value does not pass the CardScheme check.

You can use the following parameters in this message:

Parameter	Description
`{{ value }}`	The current (invalid) value
`{{ label }}`	Corresponding form field label

`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.

`schemes`

type: mixed [default option]

This option is required and represents the name of the number scheme used to validate the credit card number, it can either be a string or an array. Valid values are:

AMEX
CHINA_UNIONPAY
DINERS
DISCOVER
INSTAPAYMENT
JCB
LASER
MAESTRO
MASTERCARD
MIR
UATP
VISA

For more information about the used schemes, see Wikipedia: Issuer identification number (IIN).

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

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