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-rw-r--r--activesupport/lib/active_support/core_ext/date_time/blank.rb12
-rw-r--r--activesupport/lib/active_support/core_ext/date_time/calculations.rb12
-rw-r--r--activesupport/lib/active_support/core_ext/date_time/conversions.rb2
3 files changed, 23 insertions, 3 deletions
diff --git a/activesupport/lib/active_support/core_ext/date_time/blank.rb b/activesupport/lib/active_support/core_ext/date_time/blank.rb
new file mode 100644
index 0000000000..56981b75fb
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/date_time/blank.rb
@@ -0,0 +1,12 @@
+require 'date'
+
+class DateTime #:nodoc:
+ # No DateTime is ever blank:
+ #
+ # DateTime.now.blank? # => false
+ #
+ # @return [false]
+ def blank?
+ false
+ end
+end
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 289ca12b5e..95617fb8c2 100644
--- a/activesupport/lib/active_support/core_ext/date_time/calculations.rb
+++ b/activesupport/lib/active_support/core_ext/date_time/calculations.rb
@@ -10,7 +10,11 @@ class DateTime
end
end
- # Seconds since midnight: DateTime.now.seconds_since_midnight.
+ # Returns the number of seconds since 00:00:00.
+ #
+ # DateTime.new(2012, 8, 29, 0, 0, 0).seconds_since_midnight # => 0
+ # DateTime.new(2012, 8, 29, 12, 34, 56).seconds_since_midnight # => 45296
+ # DateTime.new(2012, 8, 29, 23, 59, 59).seconds_since_midnight # => 86399
def seconds_since_midnight
sec + (min * 60) + (hour * 3600)
end
@@ -161,8 +165,10 @@ class DateTime
# Layers additional behavior on DateTime#<=> so that Time and
# ActiveSupport::TimeWithZone instances can be compared with a DateTime.
def <=>(other)
- if other.respond_to? :to_datetime
- super other.to_datetime
+ if other.kind_of?(Infinity)
+ super
+ elsif other.respond_to? :to_datetime
+ super other.to_datetime rescue nil
else
nil
end
diff --git a/activesupport/lib/active_support/core_ext/date_time/conversions.rb b/activesupport/lib/active_support/core_ext/date_time/conversions.rb
index 2a9c09fc29..f59d05b214 100644
--- a/activesupport/lib/active_support/core_ext/date_time/conversions.rb
+++ b/activesupport/lib/active_support/core_ext/date_time/conversions.rb
@@ -40,6 +40,8 @@ class DateTime
alias_method :to_default_s, :to_s if instance_methods(false).include?(:to_s)
alias_method :to_s, :to_formatted_s
+ # Returns a formatted string of the offset from UTC, or an alternative
+ # string if the time zone is already UTC.
#
# datetime = DateTime.civil(2000, 1, 1, 0, 0, 0, Rational(-6, 24))
# datetime.formatted_offset # => "-06:00"