Overriding case equality method so that it returns true for ActiveSupport::TimeWithZone instances
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 14 def ===(other) super || (self == Time && other.is_a?(ActiveSupport::TimeWithZone)) end
# File activesupport/lib/active_support/core_ext/time/marshal.rb, line 8 def _load(marshaled_time) time = _load_without_zone(marshaled_time) time.instance_eval do if zone = defined?(@_zone) && remove_instance_variable('@_zone') ary = to_a ary[0] += subsec if ary[0] == sec ary[-1] = zone utc? ? Time.utc(*ary) : Time.local(*ary) else self end end end
Layers additional behavior on ::at so that ActiveSupport::TimeWithZone and DateTime instances can be used when called with a single argument
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 35 def at_with_coercion(*args) return at_without_coercion(*args) if args.size != 1 # Time.at can be called with a time or numerical value time_or_number = args.first if time_or_number.is_a?(ActiveSupport::TimeWithZone) || time_or_number.is_a?(DateTime) at_without_coercion(time_or_number.to_f).getlocal else at_without_coercion(time_or_number) end end
Returns Time.zone.now
when Time.zone
or config.time_zone
are set, otherwise just returns Time.now
.
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 29 def current ::Time.zone ? ::Time.zone.now : ::Time.now end
Return the number of days in the given month. If no year is specified, it will use the current year.
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 20 def days_in_month(month, year = now.year) if month == 2 && ::Date.gregorian_leap?(year) 29 else COMMON_YEAR_DAYS_IN_MONTH[month] end end
# File activesupport/lib/active_support/core_ext/time/zones.rb, line 75 def find_zone(time_zone) find_zone!(time_zone) rescue nil end
Returns a TimeZone instance or nil, or raises an ArgumentError for invalid timezones.
# File activesupport/lib/active_support/core_ext/time/zones.rb, line 55 def find_zone!(time_zone) if !time_zone || time_zone.is_a?(ActiveSupport::TimeZone) time_zone else # lookup timezone based on identifier (unless we've been passed a TZInfo::Timezone) unless time_zone.respond_to?(:period_for_local) time_zone = ActiveSupport::TimeZone[time_zone] || TZInfo::Timezone.get(time_zone) end # Return if a TimeZone instance, or wrap in a TimeZone instance if a TZInfo::Timezone if time_zone.is_a?(ActiveSupport::TimeZone) time_zone else ActiveSupport::TimeZone.create(time_zone.name, nil, time_zone) end end rescue TZInfo::InvalidTimezoneIdentifier raise ArgumentError, "Invalid Timezone: #{time_zone}" end
Allows override of Time.zone
locally inside supplied block; resets Time.zone
to existing value when done.
# File activesupport/lib/active_support/core_ext/time/zones.rb, line 44 def use_zone(time_zone) new_zone = find_zone!(time_zone) begin old_zone, ::Time.zone = ::Time.zone, new_zone yield ensure ::Time.zone = old_zone end end
Returns the TimeZone for the current request, if this has been set (via ::zone=). If Time.zone
has not been set for the current request, returns the TimeZone specified in config.time_zone
.
# File activesupport/lib/active_support/core_ext/time/zones.rb, line 12 def zone Thread.current[:time_zone] || zone_default end
Sets Time.zone
to a TimeZone object for the current request/thread.
This method accepts any of the following:
A Rails TimeZone object.
An identifier for a Rails TimeZone object (e.g., “Eastern Time (US & Canada)”, -5.hours
).
A TZInfo::Timezone object.
An identifier for a TZInfo::Timezone object (e.g., “America/New_York”).
Here's an example of how you might set Time.zone
on a per request basis and reset it when the request is done. current_user.time_zone
just needs to return a string identifying the user's preferred time zone:
class ApplicationController < ActionController::Base around_filter :set_time_zone def set_time_zone if logged_in? Time.use_zone(current_user.time_zone) { yield } else yield end end end
# File activesupport/lib/active_support/core_ext/time/zones.rb, line 39 def zone=(time_zone) Thread.current[:time_zone] = find_zone!(time_zone) end
# File activesupport/lib/active_support/core_ext/time/marshal.rb, line 24 def _dump(*args) obj = dup obj.instance_variable_set('@_zone', zone) obj.send :_dump_without_zone, *args end
Duck-types as a Time-like class. See Object#acts_like?.
# File activesupport/lib/active_support/core_ext/time/acts_like.rb, line 5 def acts_like_time? true end
Uses Date to provide precise Time calculations for years, months, and days according to the proleptic Gregorian calendar. The options
parameter takes a hash with any of these keys: :years
, :months
, :weeks
, :days
, :hours
, :minutes
, :seconds
.
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 99 def advance(options) unless options[:weeks].nil? options[:weeks], partial_weeks = options[:weeks].divmod(1) options[:days] = options.fetch(:days, 0) + 7 * partial_weeks end unless options[:days].nil? options[:days], partial_days = options[:days].divmod(1) options[:hours] = options.fetch(:hours, 0) + 24 * partial_days end d = to_date.advance(options) d = d.gregorian if d.julian? time_advanced_by_date = change(:year => d.year, :month => d.month, :day => d.day) seconds_to_advance = options.fetch(:seconds, 0) + options.fetch(:minutes, 0) * 60 + options.fetch(:hours, 0) * 3600 if seconds_to_advance.zero? time_advanced_by_date else time_advanced_by_date.since(seconds_to_advance) end end
Returns a Range representing the whole day of the current time.
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 200 def all_day beginning_of_day..end_of_day end
Returns a new Time representing the start of the day (0:00)
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 139 def beginning_of_day #(self - seconds_since_midnight).change(usec: 0) change(:hour => 0) end
Returns a new Time representing the start of the hour (x:00)
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 169 def beginning_of_hour change(:min => 0) end
Returns a new Time representing the start of the minute (x:xx:00)
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 185 def beginning_of_minute change(:sec => 0) end
Returns a new Time where one or more of the elements have been changed according to the options
parameter. The time options (:hour
, :min
, :sec
, :usec
) reset cascadingly, so if only the hour is passed, then minute, sec, and usec is set to 0. If the hour and minute is passed, then sec and usec is set to 0. The options
parameter takes a hash with any of these keys: :year
, :month
, :day
, :hour
, :min
, :sec
, :usec
.
Time.new(2012, 8, 29, 22, 35, 0).change(day: 1) # => Time.new(2012, 8, 1, 22, 35, 0) Time.new(2012, 8, 29, 22, 35, 0).change(year: 1981, day: 1) # => Time.new(1981, 8, 1, 22, 35, 0) Time.new(2012, 8, 29, 22, 35, 0).change(year: 1981, hour: 0) # => Time.new(1981, 8, 29, 0, 0, 0)
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 76 def change(options) new_year = options.fetch(:year, year) new_month = options.fetch(:month, month) new_day = options.fetch(:day, day) new_hour = options.fetch(:hour, hour) new_min = options.fetch(:min, options[:hour] ? 0 : min) new_sec = options.fetch(:sec, (options[:hour] || options[:min]) ? 0 : sec) new_usec = options.fetch(:usec, (options[:hour] || options[:min] || options[:sec]) ? 0 : Rational(nsec, 1000)) if utc? ::Time.utc(new_year, new_month, new_day, new_hour, new_min, new_sec, new_usec) elsif zone ::Time.local(new_year, new_month, new_day, new_hour, new_min, new_sec, new_usec) else ::Time.new(new_year, new_month, new_day, new_hour, new_min, new_sec + (new_usec.to_r / 1000000), utc_offset) end end
Layers additional behavior on Time#<=> so that DateTime and ActiveSupport::TimeWithZone instances can be chronologically compared with a Time
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 236 def compare_with_coercion(other) # we're avoiding Time#to_datetime cause it's expensive if other.is_a?(Time) compare_without_coercion(other.to_time) else to_datetime <=> other end end
Returns a new Time representing the end of the day, 23:59:59.999999 (.999999999 in ruby1.9)
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 158 def end_of_day change( :hour => 23, :min => 59, :sec => 59, :usec => Rational(999999999, 1000) ) end
Returns a new Time representing the end of the hour, x:59:59.999999 (.999999999 in ruby1.9)
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 175 def end_of_hour change( :min => 59, :sec => 59, :usec => Rational(999999999, 1000) ) end
Returns a new Time representing the end of the minute, x:xx:59.999999 (.999999999 in ruby1.9)
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 191 def end_of_minute change( :sec => 59, :usec => Rational(999999999, 1000) ) end
Layers additional behavior on #eql? so that ActiveSupport::TimeWithZone instances can be eql? to an equivalent Time
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 249 def eql_with_coercion(other) # if other is an ActiveSupport::TimeWithZone, coerce a Time instance from it so we can do eql? comparison other = other.comparable_time if other.respond_to?(:comparable_time) eql_without_coercion(other) end
Returns the UTC offset as an +HH:MM formatted string.
Time.local(2000).formatted_offset # => "-06:00" Time.local(2000).formatted_offset(false) # => "-0600"
# File activesupport/lib/active_support/core_ext/time/conversions.rb, line 62 def formatted_offset(colon = true, alternate_utc_string = nil) utc? && alternate_utc_string || ActiveSupport::TimeZone.seconds_to_utc_offset(utc_offset, colon) end
Returns a new Time representing the middle of the day (12:00)
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 148 def middle_of_day change(:hour => 12) end
Time#- can also be used to determine the number of seconds between two Time instances. We're layering on additional behavior so that ActiveSupport::TimeWithZone instances are coerced into values that Time#- will recognize
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 227 def minus_with_coercion(other) other = other.comparable_time if other.respond_to?(:comparable_time) other.is_a?(DateTime) ? to_f - other.to_f : minus_without_coercion(other) end
Seconds since midnight: Time.now.seconds_since_midnight
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 52 def seconds_since_midnight to_i - change(:hour => 0).to_i + (usec / 1.0e+6) end
Returns the number of seconds until 23:59:59.
Time.new(2012, 8, 29, 0, 0, 0).seconds_until_end_of_day # => 86399 Time.new(2012, 8, 29, 12, 34, 56).seconds_until_end_of_day # => 41103 Time.new(2012, 8, 29, 23, 59, 59).seconds_until_end_of_day # => 0
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 61 def seconds_until_end_of_day end_of_day.to_i - to_i end
Returns a new Time representing the time a number of seconds since the instance time
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 131 def since(seconds) self + seconds rescue to_datetime.since(seconds) end
Converts to a formatted string. See DATE_FORMATS for builtin formats.
This method is aliased to to_s
.
time = Time.now # => Thu Jan 18 06:10:17 CST 2007 time.to_formatted_s(:time) # => "06:10" time.to_s(:time) # => "06:10" time.to_formatted_s(:db) # => "2007-01-18 06:10:17" time.to_formatted_s(:number) # => "20070118061017" time.to_formatted_s(:short) # => "18 Jan 06:10" time.to_formatted_s(:long) # => "January 18, 2007 06:10" time.to_formatted_s(:long_ordinal) # => "January 18th, 2007 06:10" time.to_formatted_s(:rfc822) # => "Thu, 18 Jan 2007 06:10:17 -0600" time.to_formatted_s(:iso8601) # => "2007-01-18T06:10:17-06:00"
to_formatted_s
You can add your own formats to the Time::DATE_FORMATS hash. Use the format name as the hash key and either a strftime string or Proc instance that takes a time argument as the value.
# config/initializers/time_formats.rb Time::DATE_FORMATS[:month_and_year] = '%B %Y' Time::DATE_FORMATS[:short_ordinal] = ->(time) { time.strftime("%B #{time.day.ordinalize}") }
# File activesupport/lib/active_support/core_ext/time/conversions.rb, line 48 def to_formatted_s(format = :default) if formatter = DATE_FORMATS[format] formatter.respond_to?(:call) ? formatter.call(self).to_s : strftime(formatter) else to_default_s end end
© 2004–2016 David Heinemeier Hansson
Licensed under the MIT License.