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 72 72: def advance(options) 73: d = self 74: d = d >> options.delete(:years) * 12 if options[:years] 75: d = d >> options.delete(:months) if options[:months] 76: d = d + options.delete(:weeks) * 7 if options[:weeks] 77: d = d + options.delete(:days) if options[:days] 78: d 79: 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 30 30: def ago(seconds) 31: to_time.since(-seconds) 32: 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 42 42: def beginning_of_day 43: to_time 44: 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 152 152: def beginning_of_month 153: self.acts_like?(:time) ? change(:day => 1,:hour => 0, :min => 0, :sec => 0) : change(:day => 1) 154: 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 165 165: def beginning_of_quarter 166: beginning_of_month.change(:month => [10, 7, 4, 1].detect { |m| m <= self.month }) 167: 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 136 136: def beginning_of_week 137: days_to_monday = self.wday!=0 ? self.wday-1 : 6 138: result = self - days_to_monday 139: self.acts_like?(:time) ? result.midnight : result 140: 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 171 171: def beginning_of_year 172: self.acts_like?(:time) ? change(:month => 1, :day => 1, :hour => 0, :min => 0, :sec => 0) : change(:month => 1, :day => 1) 173: 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 87 87: def change(options) 88: ::Date.new( 89: options[:year] || self.year, 90: options[:month] || self.month, 91: options[:day] || self.day 92: ) 93: 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 50 50: def end_of_day 51: to_time.end_of_day 52: 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 158 158: def end_of_month 159: last_day = ::Time.days_in_month( self.month, self.year ) 160: self.acts_like?(:time) ? change(:day => last_day, :hour => 23, :min => 59, :sec => 59) : change(:day => last_day) 161: end
Short-hand for months_ago(1)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 126 126: def last_month 127: months_ago(1) 128: end
Short-hand for months_since(1)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 131 131: def next_month 132: months_since(1) 133: 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 145 145: def next_week(day = :monday) 146: days_into_week = { :monday => 0, :tuesday => 1, :wednesday => 2, :thursday => 3, :friday => 4, :saturday => 5, :sunday => 6} 147: result = (self + 7).beginning_of_week + days_into_week[day] 148: self.acts_like?(:time) ? result.change(:hour => 0) : result 149: end
Short-hand for years_since(1)
# File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 121 121: def next_year 122: years_since(1) 123: 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 36 36: def since(seconds) 37: to_time.since(seconds) 38: end