hardpixel/active-content

module ActiveContent
  module Uploadable
    extend ActiveSupport::Concern

    class_methods do
      def has_uploader(name=nil)
        mount_uploader :file, name

        define_method :mime_type do
          @mime_type ||= MIME::Types[file.content_type].first
        end

        before_save do
          if file_identifier.present?
            self.name       = file_identifier.split('.').first.titleize unless name?
            self.media_type = mime_type.media_type
            self.sub_type   = mime_type.sub_type
          end
        end
      end
    end
  end
end