rails/rails — pull request #16074 by sgrif (2014-07-06 22:09:07+00:00)
Title: Remove the `text?` predicate from the type objects

This was only used for uniqueness validations. The first usage was in
conjunction with `limit`. Types which cast to string, but are not
considered text cannot have a limit. The second case was only with an
explicit `:case_sensitive => true` option given by the user.