converting created_at to the number of days ago format

Hi

I want to display the created_at field of my model in the format n days
ago n hours ago

Please help me in this

@seconds_from_model_creation = (Time.now.to_i - Time.at
(@model.created_at).to_i)
@days_from_creation = @seconds_from_model_creation / (60*60*24)
...

Sorry, that should be
(Time.now.to_i - Time.at(@model.created_at.to_i).to_i)

and there are questions about timezones and stuff. You need to watch
it carefully.