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-rw-r--r--activesupport/lib/active_support/core_ext/date_time/calculations.rb7
1 files changed, 7 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/date_time/calculations.rb b/activesupport/lib/active_support/core_ext/date_time/calculations.rb
index 1eaf51243c..7e214524df 100644
--- a/activesupport/lib/active_support/core_ext/date_time/calculations.rb
+++ b/activesupport/lib/active_support/core_ext/date_time/calculations.rb
@@ -28,6 +28,13 @@ class DateTime
end_of_day.to_i - to_i
end
+ # Returns the fraction of a second as a +Rational+
+ #
+ # DateTime.new(2012, 8, 29, 0, 0, 0.5).subsec # => (1/2)
+ def subsec
+ sec_fraction
+ end
+
# Returns a new DateTime where one or more of the elements have been changed
# according to the +options+ parameter. The time options (<tt>:hour</tt>,
# <tt>:min</tt>, <tt>:sec</tt>) reset cascadingly, so if only the hour is