| Module | ActiveSupport::CoreExtensions::DateTime::Conversions |
| In: |
vendor/rails/activesupport/lib/active_support/core_ext/date_time/conversions.rb
|
Converting datetimes to formatted strings, dates, and times.
Returns the utc_offset as an +HH:MM formatted string. Examples:
datetime = DateTime.civil(2000, 1, 1, 0, 0, 0, Rational(-6, 24)) datetime.formatted_offset # => "-06:00" datetime.formatted_offset(false) # => "-0600"
# File vendor/rails/activesupport/lib/active_support/core_ext/date_time/conversions.rb, line 58
58: def formatted_offset(colon = true, alternate_utc_string = nil)
59: utc? && alternate_utc_string || utc_offset.to_utc_offset_s(colon)
60: end
Overrides the default inspect method with a human readable one, e.g., "Mon, 21 Feb 2005 14:30:00 +0000"
# File vendor/rails/activesupport/lib/active_support/core_ext/date_time/conversions.rb, line 63
63: def readable_inspect
64: to_s(:rfc822)
65: end
Converts self to a Ruby Date object; time portion is discarded
# File vendor/rails/activesupport/lib/active_support/core_ext/date_time/conversions.rb, line 68
68: def to_date
69: ::Date.new(year, month, day)
70: end
To be able to keep Times, Dates and DateTimes interchangeable on conversions
# File vendor/rails/activesupport/lib/active_support/core_ext/date_time/conversions.rb, line 79
79: def to_datetime
80: self
81: end
Converts self to a floating-point number of seconds since the Unix epoch
# File vendor/rails/activesupport/lib/active_support/core_ext/date_time/conversions.rb, line 89
89: def to_f
90: days_since_unix_epoch = self - ::DateTime.civil(1970)
91: (days_since_unix_epoch * 86_400).to_f
92: end
Convert to a formatted string. See Time::DATE_FORMATS for predefined formats.
This method is aliased to to_s.
datetime = DateTime.civil(2007, 12, 4, 0, 0, 0, 0) # => Tue, 04 Dec 2007 00:00:00 +0000 datetime.to_formatted_s(:db) # => "2007-12-04 00:00:00" datetime.to_s(:db) # => "2007-12-04 00:00:00" datetime.to_s(:number) # => "20071204000000" datetime.to_formatted_s(:short) # => "04 Dec 00:00" datetime.to_formatted_s(:long) # => "December 04, 2007 00:00" datetime.to_formatted_s(:long_ordinal) # => "December 4th, 2007 00:00" datetime.to_formatted_s(:rfc822) # => "Tue, 04 Dec 2007 00:00:00 +0000"
DateTime formats are shared with Time. You can add your own 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 or datetime argument as the value.
# config/initializers/time_formats.rb
Time::DATE_FORMATS[:month_and_year] = "%B %Y"
Time::DATE_FORMATS[:short_ordinal] = lambda { |time| time.strftime("%B #{time.day.ordinalize}") }
# File vendor/rails/activesupport/lib/active_support/core_ext/date_time/conversions.rb, line 48
48: def to_formatted_s(format = :default)
49: return to_default_s unless formatter = ::Time::DATE_FORMATS[format]
50: formatter.respond_to?(:call) ? formatter.call(self).to_s : strftime(formatter)
51: end
Attempts to convert self to a Ruby Time object; returns self if out of range of Ruby Time class If self has an offset other than 0, self will just be returned unaltered, since there‘s no clean way to map it to a Time
# File vendor/rails/activesupport/lib/active_support/core_ext/date_time/conversions.rb, line 74
74: def to_time
75: self.offset == 0 ? ::Time.utc_time(year, month, day, hour, min, sec) : self
76: end