def additional_data(data = '')

      # abort data.inspect

      if !data.blank?
        data.each do |key, value|
          data[key.to_sym] = value[0] if value.size < 2
        end
        self.post_additional_data = ActiveSupport::JSON.encode(data)
      else
        self.post_additional_data = ''
      end

    end
def additional_data(data = '')

      # abort data.inspect

      if !data.blank?
        data.each do |key, value|
          data[key.to_sym] = value[0] if value.size < 2
        end
        self.post_additional_data = ActiveSupport::JSON.encode(data)
      else
        self.post_additional_data = ''
      end

    end
filter/format the additional fields and add the data to the post_additional_data field of the record.
 Params:
 +data+:: array of additional fields