accessing raw paperclip data

gistfile1.rb

  def _paperclip_is_csv(field_name)
    if attachment_for(field_name).dirty?
      begin        
        FasterCSV.read(attachment_for(field_name).queued_for_write[:original].path)
      rescue FasterCSV::MalformedCSVError => e
        errors.add_to_base("Please ensure that the #{field_name.to_s.titleize} is a valid CSV file.")
      end      
    end
  end