diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/date_and_time/calculations.rb')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/date_and_time/calculations.rb | 66 |
1 files changed, 50 insertions, 16 deletions
diff --git a/activesupport/lib/active_support/core_ext/date_and_time/calculations.rb b/activesupport/lib/active_support/core_ext/date_and_time/calculations.rb index f2ba7fdda5..f6cb1a384c 100644 --- a/activesupport/lib/active_support/core_ext/date_and_time/calculations.rb +++ b/activesupport/lib/active_support/core_ext/date_and_time/calculations.rb @@ -1,3 +1,5 @@ +# frozen_string_literal: true + require "active_support/core_ext/object/try" module DateAndTime @@ -18,9 +20,9 @@ module DateAndTime advance(days: -1) end - # Returns a new date/time representing the previous day. - def prev_day - advance(days: -1) + # Returns a new date/time the specified number of days ago. + def prev_day(days = 1) + advance(days: -days) end # Returns a new date/time representing tomorrow. @@ -28,9 +30,9 @@ module DateAndTime advance(days: 1) end - # Returns a new date/time representing the next day. - def next_day - advance(days: 1) + # Returns a new date/time the specified number of days in the future. + def next_day(days = 1) + advance(days: days) end # Returns true if the date/time is today. @@ -186,9 +188,9 @@ module DateAndTime end end - # Short-hand for months_since(1). - def next_month - months_since(1) + # Returns a new date/time the specified number of months in the future. + def next_month(months = 1) + advance(months: months) end # Short-hand for months_since(3) @@ -196,9 +198,9 @@ module DateAndTime months_since(3) end - # Short-hand for years_since(1). - def next_year - years_since(1) + # Returns a new date/time the specified number of years in the future. + def next_year(years = 1) + advance(years: years) end # Returns a new date/time representing the given day in the previous week. @@ -221,11 +223,15 @@ module DateAndTime end alias_method :last_weekday, :prev_weekday + # Returns a new date/time the specified number of months ago. + def prev_month(months = 1) + advance(months: -months) + end + # Short-hand for months_ago(1). - def prev_month + def last_month months_ago(1) end - alias_method :last_month, :prev_month # Short-hand for months_ago(3). def prev_quarter @@ -233,11 +239,15 @@ module DateAndTime end alias_method :last_quarter, :prev_quarter + # Returns a new date/time the specified number of years ago. + def prev_year(years = 1) + advance(years: -years) + end + # Short-hand for years_ago(1). - def prev_year + def last_year years_ago(1) end - alias_method :last_year, :prev_year # Returns the number of days to the start of the week on the given day. # Week is assumed to start on +start_day+, default is @@ -320,6 +330,30 @@ module DateAndTime beginning_of_year..end_of_year end + # Returns a new date/time representing the next occurrence of the specified day of week. + # + # today = Date.today # => Thu, 14 Dec 2017 + # today.next_occurring(:monday) # => Mon, 18 Dec 2017 + # today.next_occurring(:thursday) # => Thu, 21 Dec 2017 + def next_occurring(day_of_week) + current_day_number = wday != 0 ? wday - 1 : 6 + from_now = DAYS_INTO_WEEK.fetch(day_of_week) - current_day_number + from_now += 7 unless from_now > 0 + advance(days: from_now) + end + + # Returns a new date/time representing the previous occurrence of the specified day of week. + # + # today = Date.today # => Thu, 14 Dec 2017 + # today.prev_occurring(:monday) # => Mon, 11 Dec 2017 + # today.prev_occurring(:thursday) # => Thu, 07 Dec 2017 + def prev_occurring(day_of_week) + current_day_number = wday != 0 ? wday - 1 : 6 + ago = current_day_number - DAYS_INTO_WEEK.fetch(day_of_week) + ago += 7 unless ago > 0 + advance(days: -ago) + end + private def first_hour(date_or_time) date_or_time.acts_like?(:time) ? date_or_time.beginning_of_day : date_or_time |