diff options
| -rw-r--r-- | activesupport/CHANGELOG.md | 4 | ||||
| -rw-r--r-- | activesupport/lib/active_support/core_ext/date_time/calculations.rb | 7 | ||||
| -rw-r--r-- | activesupport/test/core_ext/date_time_ext_test.rb | 5 |
3 files changed, 16 insertions, 0 deletions
diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md index 304b540aa2..8908247287 100644 --- a/activesupport/CHANGELOG.md +++ b/activesupport/CHANGELOG.md @@ -1,3 +1,7 @@ +* Add `DateTime#subsec` to return the fraction of a second as a `Rational`. + + *Andrew White* + * Add additional aliases for `DateTime#utc` to mirror the ones on `ActiveSupport::TimeWithZone` and `Time`. 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 diff --git a/activesupport/test/core_ext/date_time_ext_test.rb b/activesupport/test/core_ext/date_time_ext_test.rb index d57e71df3b..c19992553f 100644 --- a/activesupport/test/core_ext/date_time_ext_test.rb +++ b/activesupport/test/core_ext/date_time_ext_test.rb @@ -400,4 +400,9 @@ class DateTimeExtCalculationsTest < ActiveSupport::TestCase assert_equal 0, DateTime.civil(2000).nsec assert_equal 500000000, DateTime.civil(2000, 1, 1, 0, 0, Rational(1,2)).nsec end + + def test_subsec + assert_equal 0, DateTime.civil(2000).subsec + assert_equal Rational(1,2), DateTime.civil(2000, 1, 1, 0, 0, Rational(1,2)).subsec + end end |