rails/rails — pull request #7358 by keram (2012-08-15 21:08:32+00:00)
Title: Feature presence validation for boolen parameters

Hello,
this fix situation when I want add presence validation for boolean value which by default fails when hold "false" value

that is because ``false.blank? # => true`` and ``true.blank? # => false``

Thus with this fix: ``"false".blank? # => false`` as is expected.

I'm only not sure what with empty arrays
``[].blank? # => true`` and with this patch ``"[]".blank? # => false``
but I suppose this would be right behaviour.