| Module | ActiveSupport::CoreExtensions::Date::Calculations |
| In: |
vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb
|
Enables the use of time calculations within Time itself
Provides precise Date calculations for years, months, and days. The options parameter takes a hash with any of these keys: :years, :months, :weeks, :days.
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 79
79: def advance(options)
80: d = self
81: d = d >> options.delete(:years) * 12 if options[:years]
82: d = d >> options.delete(:months) if options[:months]
83: d = d + options.delete(:weeks) * 7 if options[:weeks]
84: d = d + options.delete(:days) if options[:days]
85: d
86: end
Converts Date to a Time (or DateTime if necessary) with the time portion set to the beginning of the day (0:00) and then subtracts the specified number of seconds
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 37
37: def ago(seconds)
38: to_time.since(-seconds)
39: end
Converts Date to a Time (or DateTime if necessary) with the time portion set to the beginning of the day (0:00)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 49
49: def beginning_of_day
50: to_time
51: end
Returns a new ; DateTime objects will have time set to 0:00DateTime representing the start of the month (1st of the month; DateTime objects will have time set to 0:00)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 167
167: def beginning_of_month
168: self.acts_like?(:time) ? change(:day => 1,:hour => 0, :min => 0, :sec => 0) : change(:day => 1)
169: end
Returns a new Date/DateTime representing the start of the quarter (1st of january, april, july, october; DateTime objects will have time set to 0:00)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 180
180: def beginning_of_quarter
181: beginning_of_month.change(:month => [10, 7, 4, 1].detect { |m| m <= self.month })
182: end
Returns a new Date/DateTime representing the "start" of this week (i.e, Monday; DateTime objects will have time set to 0:00)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 143
143: def beginning_of_week
144: days_to_monday = self.wday!=0 ? self.wday-1 : 6
145: result = self - days_to_monday
146: self.acts_like?(:time) ? result.midnight : result
147: end
Returns a new Date/DateTime representing the start of the year (1st of january; DateTime objects will have time set to 0:00)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 192
192: def beginning_of_year
193: self.acts_like?(:time) ? change(:month => 1, :day => 1, :hour => 0, :min => 0, :sec => 0) : change(:month => 1, :day => 1)
194: end
Returns a new Date where one or more of the elements have been changed according to the options parameter.
Examples:
Date.new(2007, 5, 12).change(:day => 1) # => Date.new(2007, 5, 1) Date.new(2007, 5, 12).change(:year => 2005, :month => 1) # => Date.new(2005, 1, 12)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 94
94: def change(options)
95: ::Date.new(
96: options[:year] || self.year,
97: options[:month] || self.month,
98: options[:day] || self.day
99: )
100: end
Converts Date to a Time (or DateTime if necessary) with the time portion set to the end of the day (23:59:59)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 57
57: def end_of_day
58: to_time.end_of_day
59: end
Returns a new Date/DateTime representing the end of the month (last day of the month; DateTime objects will have time set to 0:00)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 173
173: def end_of_month
174: last_day = ::Time.days_in_month( self.month, self.year )
175: self.acts_like?(:time) ? change(:day => last_day, :hour => 23, :min => 59, :sec => 59) : change(:day => last_day)
176: end
Returns a new Date/DateTime representing the end of the quarter (last day of march, june, september, december; DateTime objects will have time set to 23:59:59)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 186
186: def end_of_quarter
187: change(:month => [3, 6, 9, 12].detect { |m| m >= self.month }).end_of_month
188: end
Returns a new Date/DateTime representing the end of this week (Sunday, DateTime objects will have time set to 23:59:59)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 152
152: def end_of_week
153: days_to_sunday = self.wday!=0 ? 7-self.wday : 0
154: result = self + days_to_sunday.days
155: self.acts_like?(:time) ? result.end_of_day : result
156: end
Returns a new Time representing the end of the year (31st of december; DateTime objects will have time set to 23:59:59)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 198
198: def end_of_year
199: self.acts_like?(:time) ? change(:month => 12,:day => 31,:hour => 23, :min => 59, :sec => 59) : change(:month => 12, :day => 31)
200: end
Short-hand for months_ago(1)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 133
133: def last_month
134: months_ago(1)
135: end
Short-hand for months_since(1)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 138
138: def next_month
139: months_since(1)
140: end
Returns a new Date/DateTime representing the start of the given day in next week (default is Monday).
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 160
160: def next_week(day = :monday)
161: days_into_week = { :monday => 0, :tuesday => 1, :wednesday => 2, :thursday => 3, :friday => 4, :saturday => 5, :sunday => 6}
162: result = (self + 7).beginning_of_week + days_into_week[day]
163: self.acts_like?(:time) ? result.change(:hour => 0) : result
164: end
Short-hand for years_since(1)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 128
128: def next_year
129: years_since(1)
130: end
Converts Date to a Time (or DateTime if necessary) with the time portion set to the beginning of the day (0:00) and then adds the specified number of seconds
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 43
43: def since(seconds)
44: to_time.since(seconds)
45: end