filtered_list.rb

def filtered_list(filter_name, filter_value)
  puts "#{filter_name} - #{filter_value}"
  query = %(SELECT name, type, city FROM restaurants\n)

  if filter_name.nil? && filter_value.nil?
    query << "ORDER BY name ASC;"
  else
    query << %(WHERE LOWER(#{filter_name}) LIKE '%#{filter_value}%' ORDER BY name ASC;)
  end

  response = @conn.exec(query).to_a
  query_to_table(response)
end