Should set default_options for paperclip for better DRY.

paperclip.rb

module Paperclip
  class Attachment
    def self.default_options
      @default_options ||= {
        :url => ":attachment/:id/:style.:extension",
        :path => ":rails_root/public:url",
        :s3_credentials => "#{Rails.root}/config/s3.yml",
        :storage => :s3,
        :styles => {},
        :processors => [:thumbnail],
        :convert_options => {},
        :default_url => "/:attachment/:style/missing.png",
        :default_style => :original,
        :whiny => Paperclip.options[:whiny] || Paperclip.options[:whiny_thumbnails]
      }
    end
  end
end