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