CarrierWave::Magic

This allows to set file type with ruby-filemagic instead of an extension

To set correct file extension on resulting files on disk:

1) Add 'mime-types' gem I reccomend using 'mime_types' 1.20 from git:

gem 'mime-types', github: 'halostatue/mime-types'

2) Add this to your uploader (or any other way)

def filename
    if original_filename.present?
        ext = MIME::Types[file.content_type].nil? ? file.extension : MIME::Types[file.content_type].first.extensions.first
        split_extension(original_filename)[0] + '.' + ext
    end
end

Idea and some of the code from this pull request: https://github.com/jnicklas/carrierwave/pull/949

Installation

Add this line to your application's Gemfile:

gem 'carrierwave-magic'

And then execute:

$ bundle

Or install it yourself as:

$ gem install carrierwave-magic

Usage

class ImageUploader < CarrierWave::Uploader::Base
  include CarrierWave::Magic
  process :set_magic_content_type
end

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request