Issues with Globalize and CarrierWave uploads in Rails 4.2 app - carrierwave

Question

I have issues with translated files in my Rails 4.2 app.
Background
Here are the gem versions I'm using:
gem "rails", "4.2.1"
gem "carrierwave" # 0.10.0
gem "globalize" # 5.0.1
And my model:
class Download < ActiveRecord::Base
belongs_to :download_type
has_and_belongs_to_many :products
translates :title, :part_number, :file
mount_uploader :file, DownloadFileUploader
validates :title, presence: true
def to_param
"#{id}-#{title.parameterize}"
end
end
The Issues
In my view, I want to list a Download and all of the current translations for that download, but all I get is the current locale data for each translation. In the Rails console:
> I18n.locale
=> :en
> download = Download.find(481)
=> #<Download id: 481, title: "SmartSensor HD Quick-reference Guide (User)", part_number: "WX-500-0171", download_type_id: 3, created_at: "2015-01-16 22:49:13", updated_at: "2015-04-20 16:59:25", file: "smartsensor_hd_user_quick-reference_guide-20150116...", download_updated_at: nil>
> download.translations.count
=> 8
> download.translated_locales
=> [:de, :en, :es, :fr, :it, :pt, :ru, :"zh-CN"]
> download.file.class
=> DownloadFileUploader
> download.file.url
=> "/uploads/download/file/481/smartsensor_hd_user_quick-reference_guide-20150116154913-en.pdf"
> download.title
=> "SmartSensor HD Quick-reference Guide (User)"
> download.part_number
=> "WX-500-0171"
And when the locale changes:
> I18n.locale = :de
=> :de
> download.file.class
=> DownloadFileUploader
> download.file.url
=> "/uploads/download/file/481/smartsensor_hd_user_quick-reference_guide-20150116154913-en.pdf"
> download.title
=> "SmartSensor HD Kurzanleitung"
> download.part_number
=> "WX-502-0006"
If I try and access the translation directly:
> I18n.locale = :de
=> :de
> download.translation.file.class
=> String
If I change how the uploader is mounted in my model:
Translation.mount_uploader :file, DownloadFileUploader
Existing translations list correctly—including the file, but I can no longer upload files. What gets stored in the database is this:
/uploads/download/translation/file/401/%23%3CActionDispatch%3A%3AHttp%3A%3AUploadedFile%3A0x007f9c12e6fe00%3E
Notice that it inserts /translation into the path, which I can fix in the uploader, but the filename isn't actually a file.
If I move translates :title, :part_number, :file below mount_uploader :file, DownloadFileUploader in my model, Globalize overrides the mounted uploader and that column is returned as class String when accessing it.
The Cry for Help
Help! 😮

Answer 1

I wrote this simple gem https://github.com/dalpo/carrierwave_globalize. which it should allow to use Globalize and Carrierwave together.
You have to extend your model with the CarrierwaveGlobalize module and use the mount_translated_uploader class method to mount your carrierwave uploader instead of the mount_uploader mehtod.
Follow the instructions in the readme for more info.

Answer 2

Old question, but... do not use Globalize with CarrierWave on the same attribute, they both make overrides for the default behavior.
You can do this in your model:
class Download < ActiveRecord::Base
belongs_to :download_type
has_and_belongs_to_many :products
translates :title, :part_number
mount_uploader :file, DownloadFileUploader
validates :title, presence: true
def to_param
"#{id}-#{title.parameterize}"
end
end
And then override file storing for your uploader in system to use I18n.locale:
def store_dir
"uploads/#{I18n.locale}/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
end