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

Be careful with the duration longer than one day.

(timing/3600).to_i.to_s.rjust(2,'0') + ":"+Time.at(timing).utc.strftime("%M:%S")