From 6ff54f70fdbddf2d068982e6ea4242b6b95104df Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Mon, 21 Feb 2005 14:18:54 +0000
Subject: Added Time::Calculations to ask for things like Time.now.tomorrow,
Time.now.yesterday, Time.now.months_ago(4) #580 [DP|Flurin]
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@731 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
---
activesupport/lib/active_support/core_ext/time.rb | 5 +
.../active_support/core_ext/time/calculations.rb | 101 +++++++++++++++++++++
2 files changed, 106 insertions(+)
create mode 100644 activesupport/lib/active_support/core_ext/time.rb
create mode 100644 activesupport/lib/active_support/core_ext/time/calculations.rb
(limited to 'activesupport/lib')
diff --git a/activesupport/lib/active_support/core_ext/time.rb b/activesupport/lib/active_support/core_ext/time.rb
new file mode 100644
index 0000000000..e13cb07def
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/time.rb
@@ -0,0 +1,5 @@
+require File.dirname(__FILE__) + '/time/calculations'
+
+class Time#:nodoc:
+ include ActiveSupport::CoreExtensions::Time::Calculations
+end
diff --git a/activesupport/lib/active_support/core_ext/time/calculations.rb b/activesupport/lib/active_support/core_ext/time/calculations.rb
new file mode 100644
index 0000000000..f5e9ab212c
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/time/calculations.rb
@@ -0,0 +1,101 @@
+module ActiveSupport #:nodoc:
+ module CoreExtensions #:nodoc:
+ module Time #:nodoc:
+ # Enables the use of time calculations within Time itself
+ module Calculations
+ # Seconds since midnight: Time.now.seconds_since_midnight
+ def seconds_since_midnight
+ self.hour.hours + self.min.minutes + self.sec + (self.usec/1.0e+6)
+ end
+
+ # Returns a new Time where one or more of the elements have been changed according to the +options+ parameter. The time options
+ # (hour, minute, sec, usec) reset cascadingly, so if only the hour is passed, then minute, sec, and usec is set to 0. If the hour and
+ # minute is passed, then sec and usec is set to 0.
+ def change(options, time_factory_method = :local)
+ ::Time.send(
+ time_factory_method,
+ options[:year] || self.year,
+ options[:month] || self.month,
+ options[:mday] || self.mday,
+ options[:hour] || self.hour,
+ options[:min] || (options[:hour] ? 0 : self.min),
+ options[:sec] || ((options[:hour] || options[:min]) ? 0 : self.sec),
+ options[:usec] || ((options[:hour] || options[:min] || options[:usec]) ? 0 : self.usec)
+ )
+ end
+
+ # Returns a new Time representing the time a number of seconds ago, this is basically a wrapper around the Numeric extension
+ # Do not use this method in combination with x.months, use months_ago instead!
+ def ago(seconds)
+ seconds.until(self)
+ end
+
+ # Returns a new Time representing the time a number of seconds since the instance time, this is basically a wrapper around
+ #the Numeric extension. Do not use this method in combination with x.months, use months_since instead!
+ def since(seconds)
+ seconds.since(self)
+ end
+
+ # Returns a new Time representing the time a number of specified months ago
+ def months_ago(months, time_factory_method = :local)
+ if months >= self.month
+ change({ :year => self.year - 1, :month => 12 }, time_factory_method).months_ago(months - self.month)
+ else
+ change({ :year => self.year, :month => self.month - months }, time_factory_method)
+ end
+ end
+
+ def months_since(months, time_factory_method = :local)
+ if months + self.month > 12
+ change({ :year => self.year + 1, :month => 1 }, time_factory_method).months_since(
+ months - (self.month == 1 ? 12 : (self.month + 1))
+ )
+ else
+ change({ :year => self.year, :month => self.month + months }, time_factory_method)
+ end
+ end
+
+ # Returns a new Time representing the "start" of this week (sunday, 0:00)
+ def beginning_of_week
+ (self - self.wday.days).midnight
+ end
+ alias :sunday :beginning_of_week
+ alias :at_beginning_of_week :beginning_of_week
+
+ # Returns a new Time representing the start of the day (0:00)
+ def beginning_of_day
+ self - self.seconds_since_midnight
+ end
+ alias :midnight :beginning_of_day
+ alias :at_midnight :beginning_of_day
+ alias :at_beginning_of_day :beginning_of_day
+
+ # Returns a new Time representing the start of the month (1st of the month, 0:00)
+ def beginning_of_month
+ self - ((self.mday-1).days + self.seconds_since_midnight)
+ end
+ alias :at_beginning_of_month :beginning_of_month
+
+ # Convenience method which returns a new Time representing the time 1 day ago
+ def yesterday
+ self.ago(1.day)
+ end
+
+ # Convenience method which returns a new Time representing the time 1 day since the instance time
+ def tomorrow
+ self.since(1.day)
+ end
+
+ # Returns a new Time of the current day at 9:00 (am) in the morning
+ def in_the_morning(time_factory_method = :local)
+ change({:hour => 9}, time_factory_method)
+ end
+
+ # Returns a new Time of the current day at 14:00 in the afternoon
+ def in_the_afternoon(time_factory_method = :local)
+ change({:hour => 14}, time_factory_method)
+ end
+ end
+ end
+ end
+end
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