code: def ft_sugget (attribute:, prefix:)
        key = "#{@model}:#{attribute}"
        REDI_SEARCH.call('FT.SUGGET', key, prefix)
      rescue Exception => e
        Rails.logger.error e if defined? Rails
        return e.message
      end
docs: query dictionary for suggestion
  
   @param attribute [String] - name, email, etc
   @param prefix [String] - prefix to query dictionary
   @return [Array] - suggestions for prefix