Function to create strings like "6d 4h 1h 34m 23s" from an amount of seconds.

human_reabable_seconds.rb

# human_readable_seconds:
#   s: "%{s}s"
#   ms: "%{m}m %{s}s"
#   hms: "%{h}h %{m}m %{s}s"
#   dhms: "%{d}d %{h}h %{m}m %{s}s"
def human_readable_seconds(seconds)
  attrs = {s: 60, m: 60, h: 24, d: nil}.reduce([1, {}]) do |(multiplier,result),(key,modulo)|
    if seconds / multiplier > 0
      if modulo
        [multiplier * modulo, {key => (seconds / multiplier) % modulo}.merge(result)]
      else
        [multiplier, {key => (seconds / multiplier)}.merge(result)]
      end
    else
      [multiplier, result]
    end
  end.last
  I18n.t("human_readable_seconds.#{attrs.keys.join}", attrs)
end