发布于 2015-08-27 16:39:53 | 188 次阅读 | 评论: 0 | 来源: 网络整理
This constraint is used to ensure that a credit card number passes the Luhn algorithm. It is useful as a first step to validating a credit card: before communicating with a payment gateway.
| Applies to | property or method |
| Options | |
| Class | Luhn |
| Validator | LuhnValidator |
To use the Luhn validator, simply apply it to a property on an object that will contain a credit card number.
# src/Acme/SubscriptionBundle/Resources/config/validation.yml
AcmeSubscriptionBundleEntityTransaction:
properties:
cardNumber:
- Luhn:
message: Please check your credit card number.
// src/Acme/SubscriptionBundle/Entity/Transaction.php
namespace AcmeSubscriptionBundleEntity;
use SymfonyComponentValidatorConstraints as Assert;
class Transaction
{
/**
* @AssertLuhn(message = "Please check your credit card number.")
*/
protected $cardNumber;
}
<!-- src/Acme/SubscriptionBundle/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="AcmeSubscriptionBundleEntityTransaction">
<property name="cardNumber">
<constraint name="Luhn">
<option name="message">Please check your credit card number.</option>
</constraint>
</property>
</class>
</constraint-mapping>
// src/Acme/SubscriptionBundle/Entity/Transaction.php
namespace AcmeSubscriptionBundleEntity;
use SymfonyComponentValidatorMappingClassMetadata;
use SymfonyComponentValidatorConstraints as Assert;
class Transaction
{
protected $cardNumber;
public static function loadValidatorMetadata(ClassMetadata $metadata)
{
$metadata->addPropertyConstraint('cardNumber', new AssertLuhn(array(
'message' => 'Please check your credit card number',
)));
}
}
type: string default: Invalid card number.
The default message supplied when the value does not pass the Luhn check.
type: mixed default: null
2.6 新版功能: The payload option was introduced in Symfony 2.6.
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.
For example, you may want to used several error levels to present failed constraint differently in the front-end depending on the severity of the error.