diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/date_time/calculations.rb')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/date_time/calculations.rb | 56 |
1 files changed, 39 insertions, 17 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 95617fb8c2..70d5c9af8e 100644 --- a/activesupport/lib/active_support/core_ext/date_time/calculations.rb +++ b/activesupport/lib/active_support/core_ext/date_time/calculations.rb @@ -1,4 +1,4 @@ -require 'date' +require "date" class DateTime class << self @@ -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 @@ -68,7 +75,7 @@ class DateTime end d = to_date.advance(options) - datetime_advanced_by_date = change(:year => d.year, :month => d.month, :day => d.day) + datetime_advanced_by_date = change(year: d.year, month: d.month, day: d.day) seconds_to_advance = \ options.fetch(:seconds, 0) + options.fetch(:minutes, 0) * 60 + @@ -97,7 +104,7 @@ class DateTime # Returns a new DateTime representing the start of the day (0:00). def beginning_of_day - change(:hour => 0) + change(hour: 0) end alias :midnight :beginning_of_day alias :at_midnight :beginning_of_day @@ -105,7 +112,7 @@ class DateTime # Returns a new DateTime representing the middle of the day (12:00) def middle_of_day - change(:hour => 12) + change(hour: 12) end alias :midday :middle_of_day alias :noon :middle_of_day @@ -115,42 +122,60 @@ class DateTime # Returns a new DateTime representing the end of the day (23:59:59). def end_of_day - change(:hour => 23, :min => 59, :sec => 59) + change(hour: 23, min: 59, sec: 59) end alias :at_end_of_day :end_of_day # Returns a new DateTime representing the start of the hour (hh:00:00). def beginning_of_hour - change(:min => 0) + change(min: 0) end alias :at_beginning_of_hour :beginning_of_hour # Returns a new DateTime representing the end of the hour (hh:59:59). def end_of_hour - change(:min => 59, :sec => 59) + change(min: 59, sec: 59) end alias :at_end_of_hour :end_of_hour # Returns a new DateTime representing the start of the minute (hh:mm:00). def beginning_of_minute - change(:sec => 0) + change(sec: 0) end alias :at_beginning_of_minute :beginning_of_minute # Returns a new DateTime representing the end of the minute (hh:mm:59). def end_of_minute - change(:sec => 59) + change(sec: 59) end alias :at_end_of_minute :end_of_minute - # Adjusts DateTime to UTC by adding its offset value; offset is set to 0. + # Returns a <tt>Time</tt> instance of the simultaneous time in the system timezone. + def localtime(utc_offset = nil) + utc = new_offset(0) + + Time.utc( + utc.year, utc.month, utc.day, + utc.hour, utc.min, utc.sec + utc.sec_fraction + ).getlocal(utc_offset) + end + alias_method :getlocal, :localtime + + # Returns a <tt>Time</tt> instance of the simultaneous time in the UTC timezone. # # DateTime.civil(2005, 2, 21, 10, 11, 12, Rational(-6, 24)) # => Mon, 21 Feb 2005 10:11:12 -0600 - # DateTime.civil(2005, 2, 21, 10, 11, 12, Rational(-6, 24)).utc # => Mon, 21 Feb 2005 16:11:12 +0000 + # DateTime.civil(2005, 2, 21, 10, 11, 12, Rational(-6, 24)).utc # => Mon, 21 Feb 2005 16:11:12 UTC def utc - new_offset(0) + utc = new_offset(0) + + Time.utc( + utc.year, utc.month, utc.day, + utc.hour, utc.min, utc.sec + utc.sec_fraction + ) end + alias_method :getgm, :utc alias_method :getutc, :utc + alias_method :gmtime, :utc # Returns +true+ if <tt>offset == 0</tt>. def utc? @@ -165,13 +190,10 @@ class DateTime # Layers additional behavior on DateTime#<=> so that Time and # ActiveSupport::TimeWithZone instances can be compared with a DateTime. def <=>(other) - if other.kind_of?(Infinity) - super - elsif other.respond_to? :to_datetime + if other.respond_to? :to_datetime super other.to_datetime rescue nil else - nil + super end end - end |