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-rw-r--r--actionpack/lib/action_view/helpers/date_helper.rb17
1 files changed, 14 insertions, 3 deletions
diff --git a/actionpack/lib/action_view/helpers/date_helper.rb b/actionpack/lib/action_view/helpers/date_helper.rb
index 9277359d5c..eb8c96a6ae 100644
--- a/actionpack/lib/action_view/helpers/date_helper.rb
+++ b/actionpack/lib/action_view/helpers/date_helper.rb
@@ -94,9 +94,20 @@ module ActionView
when 43200..86399 then locale.t :about_x_months, :count => 1
when 86400..525599 then locale.t :x_months, :count => (distance_in_minutes.to_f / 43200.0).round
else
- distance_in_years = distance_in_minutes / 525600
- minute_offset_for_leap_year = (distance_in_years / 4) * 1440
- remainder = ((distance_in_minutes - minute_offset_for_leap_year) % 525600)
+ fyear = from_time.year
+ fyear += 1 if from_time.month >= 3
+ tyear = to_time.year
+ tyear -= 1 if to_time.month < 3
+ leap_years = (fyear > tyear) ? 0 : (fyear..tyear).count{|x| Date.leap?(x)}
+ minute_offset_for_leap_year = leap_years * 1440
+ # Discount the leap year days when calculating year distance.
+ # e.g. if there are 20 leap year days between 2 dates having the same day
+ # and month then the based on 365 days calculation
+ # the distance in years will come out to over 80 years when in written
+ # english it would read better as about 80 years.
+ minutes_with_offset = distance_in_minutes - minute_offset_for_leap_year
+ remainder = (minutes_with_offset % 525600)
+ distance_in_years = (minutes_with_offset / 525600)
if remainder < 131400
locale.t(:about_x_years, :count => distance_in_years)
elsif remainder < 394200