Fixing bug where Null needs to be escaped in yaml - see symfony/symfony#5364

weaverryan · weaverryan · commit fe7c8c4b60c5 · 2012-11-05T14:46:35.000-06:00
diff --git a/reference/constraints/Null.rst b/reference/constraints/Null.rst
@@ -29,7 +29,7 @@ of an ``Author`` class exactly equal to ``null``, you could do the following:
         Acme\BlogBundle\Entity\Author:
             properties:
                 firstName:
-                    - Null: ~
+                    - 'Null': ~
 
     .. code-block:: php-annotations
 
