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

I use this to show time durations in my Rails Project:

1. Add a custom method to the Integer class. You can create a new file called pretty_duration.rb in the initializers folder:

   class Integer
       def pretty_duration
           parse_string = 
               if self < 3600
                   '%M:%S'
               else
                   '%H:%M:%S'
               end
   
           Time.at(self).utc.strftime(parse_string)
       end
   end
   

2. Call seconds.pretty_duration anywhere in your project:

   275.pretty_duration     # => "04:35"
   9823.pretty_duration    # => "02:43:43"
   

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This answer builds up on Lev Lukomsky's Code