padrino/padrino-framework — pull request #988 by j15e (2013-01-06 18:46:26+00:00)
Title: Add support for HTML5 multiple files upload

File input with multiple option should append [] to name.

See https://github.com/rails/rails/blob/3-2-stable/actionpack/lib/action_view/helpers/form_helper.rb#L1210