From a2ec22b2a83fc68f6e82cf21a1e71e38089197c8 Mon Sep 17 00:00:00 2001
From: Christoph Schmidt <schmidt2001@yahoo.co.uk>
Date: Tue, 3 Dec 2013 15:51:17 +0100
Subject: [PATCH] Update Callback.rst

add square brackets to yaml codeblock (constraints: - Callback: [validate]). Otherwise an error "Expected argument of type array, string given" is thrown
---
 reference/constraints/Callback.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/reference/constraints/Callback.rst b/reference/constraints/Callback.rst
index e59754f450a..e370c46ecf1 100644
--- a/reference/constraints/Callback.rst
+++ b/reference/constraints/Callback.rst
@@ -42,7 +42,7 @@ Configuration
         # src/Acme/BlogBundle/Resources/config/validation.yml
         Acme\BlogBundle\Entity\Author:
             constraints:
-                - Callback: validate
+                - Callback: [validate]
 
     .. code-block:: php-annotations