Converting dates to formatted strings, times, and datetimes.
| DATE_FORMATS | = | { :short => "%e %b", :long => "%B %e, %Y", :db => "%Y-%m-%d", :number => "%Y%m%d", :long_ordinal => lambda { |date| date.strftime("%B #{date.day.ordinalize}, %Y") }, # => "April 25th, 2007" :rfc822 => "%e %b %Y" |
Overrides the default inspect method with a human readable one, e.g., "Mon, 21 Feb 2005"
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# File activesupport/lib/active_support/core_ext/date/conversions.rb, line 66
66: def readable_inspect
67: strftime("%a, %d %b %Y")
68: end
A method to keep Time, Date and DateTime instances interchangeable on conversions. In this case, it simply returns self.
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# File activesupport/lib/active_support/core_ext/date/conversions.rb, line 72
72: def to_date
73: self
74: end
Converts a Date instance to a DateTime, where the time is set to the beginning of the day and UTC offset is set to 0.
Examples
date = Date.new(2007, 11, 10) # => Sat, 10 Nov 2007 date.to_datetime # => Sat, 10 Nov 2007 00:00:00 0000
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# File activesupport/lib/active_support/core_ext/date/conversions.rb, line 97
97: def to_datetime
98: ::DateTime.civil(year, month, day, 0, 0, 0, 0)
99: end
Convert to a formatted string. See DATE_FORMATS for predefined formats.
This method is aliased to to_s.
Examples
date = Date.new(2007, 11, 10) # => Sat, 10 Nov 2007 date.to_formatted_s(:db) # => "2007-11-10" date.to_s(:db) # => "2007-11-10" date.to_formatted_s(:short) # => "10 Nov" date.to_formatted_s(:long) # => "November 10, 2007" date.to_formatted_s(:long_ordinal) # => "November 10th, 2007" date.to_formatted_s(:rfc822) # => "10 Nov 2007"
Adding your own time formats to to_formatted_s
You can add your own formats to the Date::DATE_FORMATS hash. Use the format name as the hash key and either a strftime string or Proc instance that takes a date argument as the value.
# config/initializers/time_formats.rb
Date::DATE_FORMATS[:month_and_year] = "%B %Y"
Date::DATE_FORMATS[:short_ordinal] = lambda { |date| date.strftime("%B #{date.day.ordinalize}") }
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# File activesupport/lib/active_support/core_ext/date/conversions.rb, line 53
53: def to_formatted_s(format = :default)
54: if formatter = DATE_FORMATS[format]
55: if formatter.respond_to?(:call)
56: formatter.call(self).to_s
57: else
58: strftime(formatter)
59: end
60: else
61: to_default_s
62: end
63: end
Converts a Date instance to a Time, where the time is set to the beginning of the day. The timezone can be either :local or :utc (default :local).
Examples
date = Date.new(2007, 11, 10) # => Sat, 10 Nov 2007 date.to_time # => Sat Nov 10 00:00:00 0800 2007 date.to_time(:local) # => Sat Nov 10 00:00:00 0800 2007 date.to_time(:utc) # => Sat Nov 10 00:00:00 UTC 2007
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# File activesupport/lib/active_support/core_ext/date/conversions.rb, line 86
86: def to_time(form = :local)
87: ::Time.send("#{form}_time", year, month, day)
88: end
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# File activesupport/lib/active_support/core_ext/date/conversions.rb, line 101
101: def xmlschema
102: to_time.xmlschema
103: end