Convert duration to hours:minutes:seconds (or similar) in Rails 3 or Ruby

Question

I have a feeling there is a simple/built-in way to do this but I can\'t find it.

I have a duration (in seconds) in an integer and I want to display it in a friendly form

Answer 1

This one uses the obscure divmod method to divide and modulo at the same time, so it handles Float seconds properly:

def duration(seconds)
  minutes, seconds = seconds.divmod(60)
  hours, minutes = minutes.divmod(60)
  days, hours = hours.divmod(24)

  "#{days.to_s.rjust(3)}d #{hours.to_s.rjust(2)}h #{minutes.to_s.rjust(2)}m #{seconds}s"
end