class PgSearch::Features::TSearch

def tsdocument
  if @options[:tsvector_column]
    @options[:tsvector_column].to_s
  else
    @columns.map do |search_column|
      tsvector = "to_tsvector(:dictionary, #{@normalizer.add_normalization(search_column.to_sql)})"
      search_column.weight.nil? ? tsvector : "setweight(#{tsvector}, #{connection.quote(search_column.weight)})"
    end.join(" || ")
  end
end