code: def ft_add record:
        fields = []
        @fields.each { |field| fields.push(field, record.send(field)) }
        REDI_SEARCH.call('FT.ADD', @index_name, record.to_global_id.to_s, @score,
          'REPLACE',
          'FIELDS', fields
          #'NOSAVE', 'PAYLOAD', 'LANGUAGE'
        )
      rescue Exception => e
        Rails.logger.error e if defined? Rails
        return e.message
      end
docs: index specific record
  
   @param record [Object] Object to index
   @return [String]