original_filename should follow Content-Disposition

[bbtfr]

Here: https://github.com/thoughtbot/paperclip/blob/master/lib/paperclip/io_adapters/uri_adapter.rb#L21

I think if we download a file from web, and there is a filename set in Content-Disposition in http response, original_filename should follow it.

My case is, I have a url like http://example.com/get?token=xxxx, if I set this string directly to attachment, all my attachments are named get, without extension, but it does have a filename in Content-Disposition. So I have to create a tmpfile manually and to set the filename, because files without extension are unreadable on Windows.

[tute]

Yep! We are fixing this in #2210. Thanks for reporting!

[bbtfr]

Thanks, just noticed that there is already a PR for it.