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Add docs for AS::TimeWithZone + and -

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The example was taken from the commit message 676d6a6.

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claudiob 2014-12-04 11:57:12 -08:00
parent 079ac4a058
commit ff90458cd7
1 changed files with 32 additions and 4 deletions
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36
activesupport/lib/active_support/time_with_zone.rb
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@ -243,9 +243,23 @@ module ActiveSupport
utc.hash
end
# Adds an interval of time to the current object's time and return that
# value as a new TimeWithZone object.
#
# Time.zone = 'Eastern Time (US & Canada)' # => 'Eastern Time (US & Canada)'
# now = Time.zone.now # => Sun, 02 Nov 2014 01:26:28 EDT -04:00
# now + 1000 # => Sun, 02 Nov 2014 01:43:08 EDT -04:00
#
# If we're adding a Duration of variable length (i.e., years, months, days),
# move forward from #time, otherwise move forward from #utc, for accuracy
# when moving across DST boundaries.
#
# For instance, a time + 24.hours will advance exactly 24 hours, while a
# time + 1.day will advance 23-25 hours, depending on the day.
#
# now + 24.hours # => Mon, 03 Nov 2014 00:26:28 EST -05:00
# now + 1.day # => Mon, 03 Nov 2014 01:26:28 EST -05:00
def +(other)
# If we're adding a Duration of variable length (i.e., years, months, days), move forward from #time,
# otherwise move forward from #utc, for accuracy when moving across DST boundaries
if duration_of_variable_length?(other)
method_missing(:+, other)
else
@ -254,9 +268,23 @@ module ActiveSupport
end
end
# Returns a new TimeWithZone object that represents the difference between
# the current object's time and the +other+ time.
#
# Time.zone = 'Eastern Time (US & Canada)' # => 'Eastern Time (US & Canada)'
# now = Time.zone.now # => Sun, 02 Nov 2014 01:26:28 EST -05:00
# now - 1000 # => Sun, 02 Nov 2014 01:09:48 EST -05:00
#
# If subtracting a Duration of variable length (i.e., years, months, days),
# move backward from #time, otherwise move backward from #utc, for accuracy
# when moving across DST boundaries.
#
# For instance, a time - 24.hours will go subtract exactly 24 hours, while a
# time - 1.day will subtract 23-25 hours, depending on the day.
#
# now - 24.hours # => Sat, 01 Nov 2014 02:26:28 EDT -04:00
# now - 1.day # => Sat, 01 Nov 2014 01:26:28 EDT -04:00
def -(other)
# If we're subtracting a Duration of variable length (i.e., years, months, days), move backwards from #time,
# otherwise move backwards #utc, for accuracy when moving across DST boundaries
if other.acts_like?(:time)
to_time - other.to_time
elsif duration_of_variable_length?(other)