Time ago in words a español

application_helper.rb

module ApplicationHelper
	def distance_of_time_in_words(from_time, to_time = 0, include_seconds = false)
		from_time = from_time.to_time if from_time.respond_to?(:to_time)
	  to_time = to_time.to_time if to_time.respond_to?(:to_time)
	  distance_in_minutes = (((to_time - from_time).abs)/60).round
	  distance_in_seconds = ((to_time - from_time).abs).round

	  case distance_in_minutes
	  	when 0..1
	    return (distance_in_minutes == 0) ? 'menos de un minuto' : '1 minuto' unless include_seconds

	    case distance_in_seconds
	    	when 0..4   then 'menos de 5 segundos'
	      when 5..9   then 'menos de 10 segundos'
	      when 10..19 then 'menos de 20 segundos'
	      when 20..59 then 'menos de un minuto'
	    else             '1 minuto'
	    end

	    when 2..44           then "#{distance_in_minutes} minutos"
	    when 45..89          then 'aproximadamente 1 hora'
	    when 90..1439        then "aproximadamente #{(distance_in_minutes.to_f / 60.0).round} horas"
	    when 1440..2879      then '1 dia'
	    when 2880..43199     then "#{(distance_in_minutes / 1440).round} dias"
	    when 43200..86399    then 'aproximadamente 1 mes'
	    when 86400..525959   then "#{(distance_in_minutes / 43200).round} meses"
	    when 525960..1051919 then 'aproximadamente 1 año'
	  else                      "mas de #{(distance_in_minutes / 525960).round} años"
		end
	end
end