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The Time.iso8601 method is a restricted subset of ISO-8601.
It looks like there isn't a single class that handles all of the various 8601 date and date/time combinations. However, I have managed to work around the problems by using both the Date.parse and Time.iso8601 methods. The downside is that you need to decide in code whether the input looks like a date or a date/time.
Time.iso8601 and Time.parse behave differently.
>> Time.parse("2010-09-06T12:27:00.10-05:00") => Mon Sep 06 18:27:00 +0100 2010 >> Time.iso8601("2010-09-06T12:27:00.10-05:00") => Mon Sep 06 17:27:00 UTC 2010 This document touches on the differences between what is in ISO-8601 and what is supported by Ruby. The short answer is that the number of possible formats is restricted.
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ISO 8601 represents date and time by starting with the year, followed by the month, the day, the hour, the minutes, seconds and milliseconds. For example, 2020-07-10 15:00:00.000, represents the 10th of July 2020 at 3 p.m. (in local time as there is no time zone offset specified—more on that below).
Ruby | DateTime parse() function DateTime#parse() : parse() is a DateTime class method which parses the given representation of date and time, and creates a DateTime object. Return: given representation of date and time, and creates a DateTime object.
The toISOString() method returns a string in simplified extended ISO format (ISO 8601), which is always 24 or 27 characters long ( YYYY-MM-DDTHH:mm:ss. sssZ or ±YYYYYY-MM-DDTHH:mm:ss. sssZ , respectively). The timezone is always zero UTC offset, as denoted by the suffix Z .
Yes, but unfortunately it's in Ruby 1.9.
require "date" Date.iso8601("2010-W32-5").strftime #=> "2010-08-13" I don't believe there are any implementations for Ruby 1.8.7 (or at least I couldn't find any). You could either try to upgrade to Ruby 1.9, which is pretty stable as of 1.9.2. Alternatively, you could try to parse the dates yourself.
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To convert an ISO8601 date into the local time zone, do this:
require "time" dt1 = Time.parse("2010-09-06T12:27:00.10-05:00") To convert an ISO8601 date into UTC, do this:
dt2 = Time.iso8601("2010-09-06T12:27:00.10-05:00") If you compare the dates returned by the above queries, they will be identical (i.e. dt1 === dt2). However, accessing date components (like year, month, day, hour, etc.) will return values appropriate for the time zone (either UTC or local). The same applies to strftime.
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