Class: Time
- Includes:
- DateAndTime::Calculations, DateAndTime::Zones
- Defined in:
- lib/core_ext/object/blank.rb,
lib/core_ext/time/zones.rb,
lib/core_ext/object/json.rb,
lib/core_ext/time/acts_like.rb,
lib/core_ext/time/conversions.rb,
lib/core_ext/time/calculations.rb
Overview
:nodoc:
Constant Summary collapse
- DATE_FORMATS =
{ :db => '%Y-%m-%d %H:%M:%S', :number => '%Y%m%d%H%M%S', :nsec => '%Y%m%d%H%M%S%9N', :usec => '%Y%m%d%H%M%S%6N', :time => '%H:%M', :short => '%d %b %H:%M', :long => '%B %d, %Y %H:%M', :long_ordinal => lambda { |time| day_format = CoreExt::Inflector.ordinalize(time.day) time.strftime("%B #{day_format}, %Y %H:%M") }, :rfc822 => lambda { |time| offset_format = time.formatted_offset(false) time.strftime("%a, %d %b %Y %H:%M:%S #{offset_format}") }, :iso8601 => lambda { |time| time.iso8601 } }
- COMMON_YEAR_DAYS_IN_MONTH =
[nil, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
Constants included from DateAndTime::Calculations
DateAndTime::Calculations::DAYS_INTO_WEEK, DateAndTime::Calculations::WEEKEND_DAYS
Class Attribute Summary collapse
-
.zone_default ⇒ Object
Returns the value of attribute zone_default.
Class Method Summary collapse
-
.===(other) ⇒ Object
Overriding case equality method so that it returns true for CoreExt::TimeWithZone instances.
-
.at_with_coercion(*args) ⇒ Object
(also: at)
Layers additional behavior on Time.at so that CoreExt::TimeWithZone and DateTime instances can be used when called with a single argument.
-
.current ⇒ Object
Returns
Time.zone.now
whenTime.zone
orconfig.time_zone
are set, otherwise just returnsTime.now
. -
.days_in_month(month, year = current.year) ⇒ Object
Returns the number of days in the given month.
-
.days_in_year(year = current.year) ⇒ Object
Returns the number of days in the given year.
-
.find_zone(time_zone) ⇒ Object
Returns a TimeZone instance matching the time zone provided.
-
.find_zone!(time_zone) ⇒ Object
Returns a TimeZone instance matching the time zone provided.
-
.use_zone(time_zone) ⇒ Object
Allows override of
Time.zone
locally inside supplied block; resetsTime.zone
to existing value when done. -
.zone ⇒ Object
Returns the TimeZone for the current request, if this has been set (via Time.zone=).
-
.zone=(time_zone) ⇒ Object
Sets
Time.zone
to a TimeZone object for the current request/thread.
Instance Method Summary collapse
-
#acts_like_time? ⇒ Boolean
Duck-types as a Time-like class.
-
#advance(options) ⇒ Object
Uses Date to provide precise Time calculations for years, months, and days according to the proleptic Gregorian calendar.
-
#ago(seconds) ⇒ Object
Returns a new Time representing the time a number of seconds ago, this is basically a wrapper around the Numeric extension.
-
#all_day ⇒ Object
Returns a Range representing the whole day of the current time.
-
#as_json(options = nil) ⇒ Object
:nodoc:.
-
#beginning_of_day ⇒ Object
(also: #midnight, #at_midnight, #at_beginning_of_day)
Returns a new Time representing the start of the day (0:00).
-
#beginning_of_hour ⇒ Object
(also: #at_beginning_of_hour)
Returns a new Time representing the start of the hour (x:00).
-
#beginning_of_minute ⇒ Object
(also: #at_beginning_of_minute)
Returns a new Time representing the start of the minute (x:xx:00).
-
#blank? ⇒ false
No Time is blank:.
-
#change(options) ⇒ Object
Returns a new Time where one or more of the elements have been changed according to the
options
parameter. -
#compare_with_coercion(other) ⇒ Object
(also: #<=>)
Layers additional behavior on Time#<=> so that DateTime and CoreExt::TimeWithZone instances can be chronologically compared with a Time.
-
#end_of_day ⇒ Object
(also: #at_end_of_day)
Returns a new Time representing the end of the day, 23:59:59.999999.
-
#end_of_hour ⇒ Object
(also: #at_end_of_hour)
Returns a new Time representing the end of the hour, x:59:59.999999.
-
#end_of_minute ⇒ Object
(also: #at_end_of_minute)
Returns a new Time representing the end of the minute, x:xx:59.999999.
-
#eql_with_coercion(other) ⇒ Object
(also: #eql?)
Layers additional behavior on Time#eql? so that CoreExt::TimeWithZone instances can be eql? to an equivalent Time.
-
#formatted_offset(colon = true, alternate_utc_string = nil) ⇒ Object
Returns a formatted string of the offset from UTC, or an alternative string if the time zone is already UTC.
-
#middle_of_day ⇒ Object
(also: #midday, #noon, #at_midday, #at_noon, #at_middle_of_day)
Returns a new Time representing the middle of the day (12:00).
-
#minus_with_coercion(other) ⇒ Object
(also: #-)
Time#- can also be used to determine the number of seconds between two Time instances.
-
#minus_with_duration(other) ⇒ Object
:nodoc:.
-
#plus_with_duration(other) ⇒ Object
(also: #+)
:nodoc:.
-
#seconds_since_midnight ⇒ Object
Returns the number of seconds since 00:00:00.
-
#seconds_until_end_of_day ⇒ Object
Returns the number of seconds until 23:59:59.
-
#since(seconds) ⇒ Object
(also: #in)
Returns a new Time representing the time a number of seconds since the instance time.
-
#to_formatted_s(format = :default) ⇒ Object
(also: #to_s)
Converts to a formatted string.
Methods included from DateAndTime::Calculations
#all_month, #all_quarter, #all_week, #all_year, #beginning_of_month, #beginning_of_quarter, #beginning_of_week, #beginning_of_year, #days_ago, #days_since, #days_to_week_start, #end_of_month, #end_of_quarter, #end_of_week, #end_of_year, #future?, #monday, #months_ago, #months_since, #next_day, #next_month, #next_quarter, #next_week, #next_weekday, #next_year, #on_weekend?, #past?, #prev_day, #prev_month, #prev_quarter, #prev_week, #prev_weekday, #prev_year, #sunday, #today?, #tomorrow, #weeks_ago, #weeks_since, #years_ago, #years_since, #yesterday
Methods included from DateAndTime::Zones
Class Attribute Details
.zone_default ⇒ Object
Returns the value of attribute zone_default.
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# File 'lib/core_ext/time/zones.rb', line 8 def zone_default @zone_default end |
Class Method Details
.===(other) ⇒ Object
Overriding case equality method so that it returns true for CoreExt::TimeWithZone instances
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# File 'lib/core_ext/time/calculations.rb', line 15 def ===(other) super || (self == Time && other.is_a?(CoreExt::TimeWithZone)) end |
.at_with_coercion(*args) ⇒ Object Also known as: at
Layers additional behavior on Time.at so that CoreExt::TimeWithZone and DateTime instances can be used when called with a single argument
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# File 'lib/core_ext/time/calculations.rb', line 42 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?(CoreExt::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 |
.current ⇒ Object
Returns Time.zone.now
when Time.zone
or config.time_zone
are set, otherwise just returns Time.now
.
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# File 'lib/core_ext/time/calculations.rb', line 36 def current ::Time.zone ? ::Time.zone.now : ::Time.now end |
.days_in_month(month, year = current.year) ⇒ Object
Returns the number of days in the given month. If no year is specified, it will use the current year.
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# File 'lib/core_ext/time/calculations.rb', line 21 def days_in_month(month, year = current.year) if month == 2 && ::Date.gregorian_leap?(year) 29 else COMMON_YEAR_DAYS_IN_MONTH[month] end end |
.days_in_year(year = current.year) ⇒ Object
Returns the number of days in the given year. If no year is specified, it will use the current year.
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# File 'lib/core_ext/time/calculations.rb', line 31 def days_in_year(year = current.year) days_in_month(2, year) + 337 end |
.find_zone(time_zone) ⇒ Object
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# File 'lib/core_ext/time/zones.rb', line 91 def find_zone(time_zone) find_zone!(time_zone) rescue nil end |
.find_zone!(time_zone) ⇒ Object
Returns a TimeZone instance matching the time zone provided. Accepts the time zone in any format supported by Time.zone=
. Raises an ArgumentError
for invalid time zones.
Time.find_zone! "America/New_York" # => #<CoreExt::TimeZone @name="America/New_York" ...>
Time.find_zone! "EST" # => #<CoreExt::TimeZone @name="EST" ...>
Time.find_zone! -5.hours # => #<CoreExt::TimeZone @name="Bogota" ...>
Time.find_zone! nil # => nil
Time.find_zone! false # => false
Time.find_zone! "NOT-A-TIMEZONE" # => ArgumentError: Invalid Timezone: NOT-A-TIMEZONE
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# File 'lib/core_ext/time/zones.rb', line 64 def find_zone!(time_zone) if !time_zone || time_zone.is_a?(CoreExt::TimeZone) time_zone else # Look up the timezone based on the identifier (unless we've been # passed a TZInfo::Timezone) unless time_zone.respond_to?(:period_for_local) time_zone = CoreExt::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?(CoreExt::TimeZone) time_zone else CoreExt::TimeZone.create(time_zone.name, nil, time_zone) end end rescue TZInfo::InvalidTimezoneIdentifier raise ArgumentError, "Invalid Timezone: #{time_zone}" end |
.use_zone(time_zone) ⇒ Object
Allows override of Time.zone
locally inside supplied block; resets Time.zone
to existing value when done.
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# File 'lib/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 |
.zone ⇒ Object
Returns the TimeZone for the current request, if this has been set (via Time.zone=). If Time.zone
has not been set for the current request, returns the TimeZone specified in config.time_zone
.
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# File 'lib/core_ext/time/zones.rb', line 12 def zone Thread.current[:time_zone] || zone_default end |
.zone=(time_zone) ⇒ Object
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_action :set_time_zone
def set_time_zone
if logged_in?
Time.use_zone(current_user.time_zone) { yield }
else
yield
end
end
end
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# File 'lib/core_ext/time/zones.rb', line 39 def zone=(time_zone) Thread.current[:time_zone] = find_zone!(time_zone) end |
Instance Method Details
#acts_like_time? ⇒ Boolean
Duck-types as a Time-like class. See Object#acts_like?.
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# File 'lib/core_ext/time/acts_like.rb', line 5 def acts_like_time? true end |
#advance(options) ⇒ Object
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
.
Time.new(2015, 8, 1, 14, 35, 0).advance(seconds: 1) # => 2015-08-01 14:35:01 -0700
Time.new(2015, 8, 1, 14, 35, 0).advance(minutes: 1) # => 2015-08-01 14:36:00 -0700
Time.new(2015, 8, 1, 14, 35, 0).advance(hours: 1) # => 2015-08-01 15:35:00 -0700
Time.new(2015, 8, 1, 14, 35, 0).advance(days: 1) # => 2015-08-02 14:35:00 -0700
Time.new(2015, 8, 1, 14, 35, 0).advance(weeks: 1) # => 2015-08-08 14:35:00 -0700
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# File 'lib/core_ext/time/calculations.rb', line 124 def advance() unless [:weeks].nil? [:weeks], partial_weeks = [:weeks].divmod(1) [:days] = .fetch(:days, 0) + 7 * partial_weeks end unless [:days].nil? [:days], partial_days = [:days].divmod(1) [:hours] = .fetch(:hours, 0) + 24 * partial_days end d = to_date.advance() d = d.gregorian if d.julian? time_advanced_by_date = change(:year => d.year, :month => d.month, :day => d.day) seconds_to_advance = \ .fetch(:seconds, 0) + .fetch(:minutes, 0) * 60 + .fetch(:hours, 0) * 3600 if seconds_to_advance.zero? time_advanced_by_date else time_advanced_by_date.since(seconds_to_advance) end end |
#ago(seconds) ⇒ Object
Returns a new Time representing the time a number of seconds ago, this is basically a wrapper around the Numeric extension
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# File 'lib/core_ext/time/calculations.rb', line 151 def ago(seconds) since(-seconds) end |
#all_day ⇒ Object
Returns a Range representing the whole day of the current time.
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# File 'lib/core_ext/time/calculations.rb', line 225 def all_day beginning_of_day..end_of_day end |
#as_json(options = nil) ⇒ Object
:nodoc:
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# File 'lib/core_ext/object/json.rb', line 166 def as_json( = nil) #:nodoc: if CoreExt::JSON::Encoding.use_standard_json_time_format xmlschema(CoreExt::JSON::Encoding.time_precision) else %(#{strftime("%Y/%m/%d %H:%M:%S")} #{formatted_offset(false)}) end end |
#beginning_of_day ⇒ Object Also known as: midnight, at_midnight, at_beginning_of_day
Returns a new Time representing the start of the day (0:00)
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# File 'lib/core_ext/time/calculations.rb', line 164 def beginning_of_day #(self - seconds_since_midnight).change(usec: 0) change(:hour => 0) end |
#beginning_of_hour ⇒ Object Also known as: at_beginning_of_hour
Returns a new Time representing the start of the hour (x:00)
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# File 'lib/core_ext/time/calculations.rb', line 194 def beginning_of_hour change(:min => 0) end |
#beginning_of_minute ⇒ Object Also known as: at_beginning_of_minute
Returns a new Time representing the start of the minute (x:xx:00)
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# File 'lib/core_ext/time/calculations.rb', line 210 def beginning_of_minute change(:sec => 0) end |
#blank? ⇒ false
No Time is blank:
Time.now.blank? # => false
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# File 'lib/core_ext/object/blank.rb', line 137 def blank? false end |
#change(options) ⇒ Object
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
, :nsec
) reset cascadingly, so if only the hour is passed, then minute, sec, usec and nsec is set to 0. If the hour and minute is passed, then sec, usec and nsec is set to 0. The options
parameter takes a hash with any of these keys: :year
, :month
, :day
, :hour
, :min
, :sec
, :usec
:nsec
. Pass either :usec
or :nsec
, not both.
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)
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# File 'lib/core_ext/time/calculations.rb', line 88 def change() new_year = .fetch(:year, year) new_month = .fetch(:month, month) new_day = .fetch(:day, day) new_hour = .fetch(:hour, hour) new_min = .fetch(:min, [:hour] ? 0 : min) new_sec = .fetch(:sec, ([:hour] || [:min]) ? 0 : sec) if new_nsec = [:nsec] raise ArgumentError, "Can't change both :nsec and :usec at the same time: #{.inspect}" if [:usec] new_usec = Rational(new_nsec, 1000) else new_usec = .fetch(:usec, ([:hour] || [:min] || [:sec]) ? 0 : Rational(nsec, 1000)) end 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 raise ArgumentError, 'argument out of range' if new_usec >= 1000000 ::Time.new(new_year, new_month, new_day, new_hour, new_min, new_sec + (new_usec.to_r / 1000000), utc_offset) end end |
#compare_with_coercion(other) ⇒ Object Also known as: <=>
Layers additional behavior on Time#<=> so that DateTime and CoreExt::TimeWithZone instances can be chronologically compared with a Time
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# File 'lib/core_ext/time/calculations.rb', line 261 def compare_with_coercion(other) # we're avoiding Time#to_datetime and Time#to_time because they're expensive if other.class == Time compare_without_coercion(other) elsif other.is_a?(Time) compare_without_coercion(other.to_time) else to_datetime <=> other end end |
#end_of_day ⇒ Object Also known as: at_end_of_day
Returns a new Time representing the end of the day, 23:59:59.999999
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# File 'lib/core_ext/time/calculations.rb', line 183 def end_of_day change( :hour => 23, :min => 59, :sec => 59, :usec => Rational(999999999, 1000) ) end |
#end_of_hour ⇒ Object Also known as: at_end_of_hour
Returns a new Time representing the end of the hour, x:59:59.999999
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# File 'lib/core_ext/time/calculations.rb', line 200 def end_of_hour change( :min => 59, :sec => 59, :usec => Rational(999999999, 1000) ) end |
#end_of_minute ⇒ Object Also known as: at_end_of_minute
Returns a new Time representing the end of the minute, x:xx:59.999999
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# File 'lib/core_ext/time/calculations.rb', line 216 def end_of_minute change( :sec => 59, :usec => Rational(999999999, 1000) ) end |
#eql_with_coercion(other) ⇒ Object Also known as: eql?
Layers additional behavior on Time#eql? so that CoreExt::TimeWithZone instances can be eql? to an equivalent Time
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# File 'lib/core_ext/time/calculations.rb', line 276 def eql_with_coercion(other) # if other is an CoreExt::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 |
#formatted_offset(colon = true, alternate_utc_string = nil) ⇒ Object
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# File 'lib/core_ext/time/conversions.rb', line 63 def formatted_offset(colon = true, alternate_utc_string = nil) utc? && alternate_utc_string || CoreExt::TimeZone.seconds_to_utc_offset(utc_offset, colon) end |
#middle_of_day ⇒ Object Also known as: midday, noon, at_midday, at_noon, at_middle_of_day
Returns a new Time representing the middle of the day (12:00)
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# File 'lib/core_ext/time/calculations.rb', line 173 def middle_of_day change(:hour => 12) end |
#minus_with_coercion(other) ⇒ Object Also known as: -
Time#- can also be used to determine the number of seconds between two Time instances. We’re layering on additional behavior so that CoreExt::TimeWithZone instances are coerced into values that Time#- will recognize
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# File 'lib/core_ext/time/calculations.rb', line 252 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 |
#minus_with_duration(other) ⇒ Object
:nodoc:
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# File 'lib/core_ext/time/calculations.rb', line 239 def minus_with_duration(other) #:nodoc: if CoreExt::Duration === other other.until(self) else minus_without_duration(other) end end |
#plus_with_duration(other) ⇒ Object Also known as: +
:nodoc:
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# File 'lib/core_ext/time/calculations.rb', line 229 def plus_with_duration(other) #:nodoc: if CoreExt::Duration === other other.since(self) else plus_without_duration(other) end end |
#seconds_since_midnight ⇒ Object
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# File 'lib/core_ext/time/calculations.rb', line 63 def seconds_since_midnight to_i - change(:hour => 0).to_i + (usec / 1.0e+6) end |
#seconds_until_end_of_day ⇒ Object
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# File 'lib/core_ext/time/calculations.rb', line 72 def seconds_until_end_of_day end_of_day.to_i - to_i end |
#since(seconds) ⇒ Object Also known as: in
Returns a new Time representing the time a number of seconds since the instance time
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# File 'lib/core_ext/time/calculations.rb', line 156 def since(seconds) self + seconds rescue to_datetime.since(seconds) end |
#to_formatted_s(format = :default) ⇒ Object Also known as: to_s
Converts to a formatted string. See DATE_FORMATS for built-in formats.
This method is aliased to to_s
.
time = Time.now # => 2007-01-18 06:10:17 -06:00
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"
Adding your own time formats to 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}") }
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# File 'lib/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 |