laravel/framework — pull request #1824 by shachibista (2013-07-05 23:25:46+00:00)
Title: Added ability to reference fields in before and after validators

Allows before and after validators to refer to other fields such as:

array(
'start_date' => 'after:2013-07-06',
'end_date' => 'after:start_date'
)