orbit-4-1/app/uploaders/ckeditor_attachment_file_uploader.rb

# encoding: utf-8
class CkeditorAttachmentFileUploader < CarrierWave::Uploader::Base
  include Ckeditor::Backend::CarrierWave
  
  # Include RMagick or ImageScience support:
  # include CarrierWave::RMagick
  # include CarrierWave::MiniMagick
  # include CarrierWave::ImageScience

  # Choose what kind of storage to use for this uploader:
  storage :file

  # Override the directory where uploaded files will be stored.
  # This is a sensible default for uploaders that are meant to be mounted:
  def store_dir
    "uploads/ckeditor/attachments/#{model.id}"
  end

  # Provide a default URL as a default if there hasn't been a file uploaded:
  # def default_url
  #   "/images/fallback/" + [version_name, "default.png"].compact.join('_')
  # end

  # Process files as they are uploaded:
  # process :scale => [200, 300]
  #
  # def scale(width, height)
  #   # do something
  # end

  # Add a white list of extensions which are allowed to be uploaded.
  # For images you might use something like this:
  def extension_white_list
    Ckeditor.attachment_file_types
  end

  def cache_dir
    "#{Rails.root}/tmp/uploads"
  end
end