diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/date/calculations.rb')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/date/calculations.rb | 85 |
1 files changed, 35 insertions, 50 deletions
diff --git a/activesupport/lib/active_support/core_ext/date/calculations.rb b/activesupport/lib/active_support/core_ext/date/calculations.rb index 26a99658cc..af78226c21 100644 --- a/activesupport/lib/active_support/core_ext/date/calculations.rb +++ b/activesupport/lib/active_support/core_ext/date/calculations.rb @@ -7,24 +7,6 @@ require 'active_support/core_ext/time/zones' class Date DAYS_INTO_WEEK = { :monday => 0, :tuesday => 1, :wednesday => 2, :thursday => 3, :friday => 4, :saturday => 5, :sunday => 6 } - if RUBY_VERSION < '1.9' - undef :>> - - # Backported from 1.9. The one in 1.8 leads to incorrect next_month and - # friends for dates where the calendar reform is involved. It additionally - # prevents an infinite loop fixed in r27013. - def >>(n) - y, m = (year * 12 + (mon - 1) + n).divmod(12) - m, = (m + 1) .divmod(1) - d = mday - until jd2 = self.class.valid_civil?(y, m, d, start) - d -= 1 - raise ArgumentError, 'invalid date' unless d > 0 - end - self + (jd2 - jd) - end - end - class << self # Returns a new Date representing the date 1 day ago (i.e. yesterday's date). def yesterday @@ -154,51 +136,54 @@ class Date advance(:years => years) end - # Shorthand for years_ago(1) - def prev_year - years_ago(1) - end unless method_defined?(:prev_year) - - # Shorthand for years_since(1) - def next_year - years_since(1) - end unless method_defined?(:next_year) - - # Shorthand for months_ago(1) - def prev_month - months_ago(1) - end unless method_defined?(:prev_month) - - # Shorthand for months_since(1) - def next_month - months_since(1) - end unless method_defined?(:next_month) + # Returns number of days to start of this week. Week is assumed to start on + # +start_day+, default is +:monday+. + def days_to_week_start(start_day = :monday) + start_day_number = DAYS_INTO_WEEK[start_day] + current_day_number = wday != 0 ? wday - 1 : 6 + (current_day_number - start_day_number) % 7 + end - # Returns a new Date/DateTime representing the "start" of this week (i.e, Monday; DateTime objects will have time set to 0:00). - def beginning_of_week - days_to_monday = self.wday!=0 ? self.wday-1 : 6 - result = self - days_to_monday - self.acts_like?(:time) ? result.midnight : result + # Returns a new +Date+/+DateTime+ representing the start of this week. Week is + # assumed to start on +start_day+, default is +:monday+. +DateTime+ objects + # have their time set to 0:00. + def beginning_of_week(start_day = :monday) + days_to_start = days_to_week_start(start_day) + result = self - days_to_start + acts_like?(:time) ? result.midnight : result end - alias :monday :beginning_of_week alias :at_beginning_of_week :beginning_of_week - # Returns a new Date/DateTime representing the end of this week (Sunday, DateTime objects will have time set to 23:59:59). - def end_of_week - days_to_sunday = self.wday!=0 ? 7-self.wday : 0 - result = self + days_to_sunday.days + # Returns a new +Date+/+DateTime+ representing the start of this week. Week is + # assumed to start on a Monday. +DateTime+ objects have their time set to 0:00. + def monday + beginning_of_week + end + + # Returns a new +Date+/+DateTime+ representing the end of this week. Week is + # assumed to start on +start_day+, default is +:monday+. +DateTime+ objects + # have their time set to 23:59:59. + def end_of_week(start_day = :monday) + days_to_end = 6 - days_to_week_start(start_day) + result = self + days_to_end.days self.acts_like?(:time) ? result.end_of_day : result end - alias :sunday :end_of_week alias :at_end_of_week :end_of_week - # Returns a new Date/DateTime representing the start of the given day in the previous week (default is Monday). + # Returns a new +Date+/+DateTime+ representing the end of this week. Week is + # assumed to start on a Monday. +DateTime+ objects have their time set to 23:59:59. + def sunday + end_of_week + end + + # Returns a new +Date+/+DateTime+ representing the given +day+ in the previous + # week. Default is +:monday+. +DateTime+ objects have their time set to 0:00. def prev_week(day = :monday) result = (self - 7).beginning_of_week + DAYS_INTO_WEEK[day] self.acts_like?(:time) ? result.change(:hour => 0) : result end - # Returns a new Date/DateTime representing the start of the given day in next week (default is Monday). + # Returns a new Date/DateTime representing the start of the given day in next week (default is :monday). def next_week(day = :monday) result = (self + 7).beginning_of_week + DAYS_INTO_WEEK[day] self.acts_like?(:time) ? result.change(:hour => 0) : result |