symfony/symfony — pull request #3939 by krymen (2012-04-13 23:37:01+00:00)
Title: [Validator] Allow Callback validator to be defined on property level

Bug fix: no
Feature addition: yes
Backwards compatibility break: no
Symfony2 tests pass: [![Build Status](https://secure.travis-ci.org/krymen/symfony.png?branch=issue-2480)](http://travis-ci.org/krymen/symfony?branch=issue-2480)
Fixes the following tickets: #2480
Todo: Unit tests for CallbackValidator