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tag: v2.3.6
91 lines (84 sloc) 4.062 kb
module ActiveSupport #:nodoc:
module CoreExtensions #:nodoc:
module Time #:nodoc:
# Converting times to formatted strings, dates, and datetimes.
module Conversions
DATE_FORMATS = {
:db => "%Y-%m-%d %H:%M:%S",
:number => "%Y%m%d%H%M%S",
:time => "%H:%M",
:short => "%d %b %H:%M",
:long => "%B %d, %Y %H:%M",
:long_ordinal => lambda { |time| time.strftime("%B #{time.day.ordinalize}, %Y %H:%M") },
:rfc822 => lambda { |time| time.strftime("%a, %d %b %Y %H:%M:%S #{time.formatted_offset(false)}") }
}
def self.included(base) #:nodoc:
base.class_eval do
alias_method :to_default_s, :to_s
alias_method :to_s, :to_formatted_s
end
end
# Converts to a formatted string. See DATE_FORMATS for builtin formats.
#
# This method is aliased to <tt>to_s</tt>.
#
# time = Time.now # => Thu Jan 18 06:10:17 CST 2007
#
# time.to_formatted_s(:time) # => "06:10:17"
# time.to_s(:time) # => "06:10:17"
#
# 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"
#
# == 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] = lambda { |time| time.strftime("%B #{time.day.ordinalize}") }
def to_formatted_s(format = :default)
return to_default_s unless formatter = DATE_FORMATS[format]
formatter.respond_to?(:call) ? formatter.call(self).to_s : strftime(formatter)
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"
def formatted_offset(colon = true, alternate_utc_string = nil)
utc? && alternate_utc_string || utc_offset.to_utc_offset_s(colon)
end
# Converts a Time object to a Date, dropping hour, minute, and second precision.
#
# my_time = Time.now # => Mon Nov 12 22:59:51 -0500 2007
# my_time.to_date # => Mon, 12 Nov 2007
#
# your_time = Time.parse("1/13/2009 1:13:03 P.M.") # => Tue Jan 13 13:13:03 -0500 2009
# your_time.to_date # => Tue, 13 Jan 2009
def to_date
::Date.new(year, month, day)
end
# A method to keep Time, Date and DateTime instances interchangeable on conversions.
# In this case, it simply returns +self+.
def to_time
self
end
# Converts a Time instance to a Ruby DateTime instance, preserving UTC offset.
#
# my_time = Time.now # => Mon Nov 12 23:04:21 -0500 2007
# my_time.to_datetime # => Mon, 12 Nov 2007 23:04:21 -0500
#
# your_time = Time.parse("1/13/2009 1:13:03 P.M.") # => Tue Jan 13 13:13:03 -0500 2009
# your_time.to_datetime # => Tue, 13 Jan 2009 13:13:03 -0500
def to_datetime
::DateTime.civil(year, month, day, hour, min, sec, Rational(utc_offset, 86400))
end
end
end
end
end
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