Abbreviated/short time ago

gistfile1.txt

   def short_time_ago(time, options={})
     timestamp = time.iso8601
     dist = DateTime.now.to_i - time.to_i
     # Quick (non-i18n friendly hack to always show weeks instead of months (since "m" is ambiguous)
     message =
       if dist.to_i < 6.5.days || dist.to_i > 364.5.days
         time_ago_in_words time, locale: :en_abbrev
       else
         "#{(dist/1.week).round}w"
       end
     message
     # "<time class='short-timeago timeago' locale='en_abbrev' datetime='#{timestamp}'>#{message} ago</time>".html_safe # for use with jquery timeago
   end

time.en_abbrev.yml

en:
  datetime:
    distance_in_words:
      about_x_hours:
        one: 1h
        other: "%{count}h"
      about_x_months:
        one: 1M
        other: "%{count}M"
      about_x_years:
        one: 1y
        other: "%{count}y"
      almost_x_years:
        one: 1y
        other: "%{count}y"
      half_a_minute: 30s
      less_than_x_minutes:
        one: 30s
        other: "-%{count}m"
      less_than_x_seconds:
        one: now
        other: "-%{count}s"
      over_x_years:
        one: 1+ y
        other: "%{count}+ y"
      x_days:
        one: 1d
        other: "%{count}d"
      x_minutes:
        one: 1m
        other: "%{count}m"
      x_months:
        one: 1M
        other: "%{count}M"
      x_seconds:
        one: 1s
        other: "%{count}s"

Works great!