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"
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# File 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"
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# File 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
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# File 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
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# File 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
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# File activesupport/lib/active_support/core_ext/date_time/conversions.rb, line 89 89: def to_f 90: seconds_since_unix_epoch.to_f 91: end
Convert to a formatted string. See Time::DATE_FORMATS for predefined formats.
This method is aliased to to_s.
Examples
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"
Adding your own datetime formats to to_formatted_s
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}") }
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# File 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
Converts self to an integer number of seconds since the Unix epoch
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# File activesupport/lib/active_support/core_ext/date_time/conversions.rb, line 94 94: def to_i 95: seconds_since_unix_epoch.to_i 96: 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 thereās no clean way to map it to a Time
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# File 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
Converts datetime to an appropriate format for use in XML
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# File activesupport/lib/active_support/core_ext/date_time/conversions.rb, line 84 84: def xmlschema 85: strftime("%Y-%m-%dT%H:%M:%S%Z") 86: end