Improved CardScheme validator doc

sprain · sprain · commit e3ed39718e9d · 2013-04-20T18:31:12.000+02:00
Based on feedback from @wouterj on the Iban validator doc. See symfony#2521
diff --git a/reference/constraints/CardScheme.rst b/reference/constraints/CardScheme.rst
@@ -54,6 +54,8 @@ on an  object that will contain a credit card number.
     .. code-block:: php-annotations
 
         // src/Acme/SubscriptionBundle/Entity/Transaction.php
+        namespace Acme\SubscriptionBundle\Entity\Transaction;
+        
         use Symfony\Component\Validator\Constraints as Assert;
 
         class Transaction
@@ -67,16 +69,18 @@ on an  object that will contain a credit card number.
     .. code-block:: php
 
         // src/Acme/SubscriptionBundle/Entity/Transaction.php
+        namespace Acme\SubscriptionBundle\Entity\Transaction;
+        
         use Symfony\Component\Validator\Mapping\ClassMetadata;
-        use Symfony\Component\Validator\Constraints\CardScheme;
+        use Symfony\Component\Validator\Constraints as Assert;
 
         class Transaction
         {
             protected $cardNumber;
 
             public static function loadValidatorMetadata(ClassMetadata $metadata)
             {
-                $metadata->addPropertyConstraint('cardSchema', new CardScheme(array(
+                $metadata->addPropertyConstraint('cardNumber', new Assert\CardScheme(array(
                     'schemes' => array(
                         'VISA'
                     ),
@@ -117,4 +121,4 @@ message
 
 The message shown when the value does not pass the ``CardScheme`` check.
 
-.. _`Wikipedia: Issuer identification number (IIN)`: http://en.wikipedia.org/wiki/Bank_card_number#Issuer_identification_number_.28IIN.29
+.. _`Wikipedia: Issuer identification number (IIN)`: http://en.wikipedia.org/wiki/Bank_card_number#Issuer_identification_number_.28IIN.29
