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

Methods

Classes and Modules

Module ActiveSupport::CoreExtensions::Date::Calculations::ClassMethods

Public Instance methods

Provides precise Date calculations for years, months, and days. The options parameter takes a hash with any of these keys: :years, :months, :weeks, :days.

[Source]

    # 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

[Source]

    # 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
at_beginning_of_day()

Alias for beginning_of_day

at_beginning_of_month()

Alias for beginning_of_month

at_beginning_of_quarter()
at_beginning_of_week()

Alias for beginning_of_week

at_beginning_of_year()

Alias for beginning_of_year

at_end_of_month()

Alias for end_of_month

at_end_of_quarter()

Alias for end_of_quarter

at_end_of_week()

Alias for end_of_week

at_end_of_year()

Alias for end_of_year

at_midnight()

Alias for beginning_of_day

Converts Date to a Time (or DateTime if necessary) with the time portion set to the beginning of the day (0:00)

[Source]

    # 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)

[Source]

     # 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)

[Source]

     # 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)

[Source]

     # 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)

[Source]

     # 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)

[Source]

     # 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)

[Source]

    # 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)

[Source]

     # 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)

[Source]

     # 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)

[Source]

     # 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)

[Source]

     # 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
in(seconds)

Alias for since

Short-hand for months_ago(1)

[Source]

     # 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 years_ago(1)

[Source]

     # File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 123
123:         def last_year
124:           years_ago(1)
125:         end
midnight()

Alias for beginning_of_day

monday()

Alias for beginning_of_week

Returns a new Date/DateTime representing the time a number of specified months ago

[Source]

     # File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 103
103:         def months_ago(months)
104:           advance(:months => -months)
105:         end

Returns a new Date/DateTime representing the time a number of specified months in the future

[Source]

     # File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 108
108:         def months_since(months)
109:           advance(:months => months)
110:         end

Short-hand for months_since(1)

[Source]

     # 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).

[Source]

     # 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)

[Source]

     # 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

[Source]

    # 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

Convenience method which returns a new Date/DateTime representing the time 1 day since the instance time

[Source]

     # File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 209
209:         def tomorrow
210:           self + 1
211:         end

Returns a new Date/DateTime representing the time a number of specified years ago

[Source]

     # File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 113
113:         def years_ago(years)
114:           advance(:years => -years)
115:         end

Returns a new Date/DateTime representing the time a number of specified years in the future

[Source]

     # File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 118
118:         def years_since(years)
119:           advance(:years => years)
120:         end

Convenience method which returns a new Date/DateTime representing the time 1 day ago

[Source]

     # File vendor/rails/activesupport/lib/active_support/core_ext/date/calculations.rb, line 204
204:         def yesterday
205:           self - 1
206:         end

[Validate]