Re: Survey: How ISO 8601 date formatting should work in FreeMarker 2.3.17

OK, there's one change already: Unless I'm blind, ISO 8601:2004
doesn't allow offset (time zone) after a pure date. So there won't be
2010-05-09Z, only 2010-05-09. Which strikes me as silly (because,
2010-05-09 in which time zone?)... but, what can I do.


Monday, May 9, 2011, 6:39:51 PM, Daniel Dekany wrote:

> The factors I'm not 100% sure about is:
> - Using UTC VS local time zone
> - Printing the time zone offset (including "Z") or not
>
> The current plan is that if you have:
>
>   ${exp?iso_utc}
>
> Then, depending on the type of the expression value:
> - If it's a date-only value, it prints something like
>   2010-05-09Z
> - If it's a time-only value, it prints something like
>   18:15:16Z
>   or if the millisec part is not 0 then:
>   18:15:16.008Z
> - If it's a date-time value then it's like:
>   2010-05-09T18:15:16Z
>   or
>   2010-05-09T18:15:16.008Z
> - If it's not decided if which parts of the date is used (like if you drop
>   a java.util.Date into the data-model), then just like with non-ISO
>   formatting, the above will be an error, and you have to write something
>   like:
>   ${exp?date?iso_utc}
>   ${exp?time?iso_utc}
>   ${exp?datetime?iso_utc}
>
> So as you can see:
> - The time zone is always UTC
> - The offset is always shown ("Z", since it's UTC), even for
>   date-only values.
>
> If you want to print with the local time zone (which is decided by the
> "time_zone" setting of FreeMarker), then you have to write:
>
>   ${exp?iso_local}
>
> In this case instead of "Z" you will get an offset like ("+05:00").
> The offset would be always shown here too.
>
> If you don't want to show the offset then you had to write:
>
>   ${exp?iso_utc_no}
>
> or
>
>   ${exp?iso_local_no}
>
> where "no" stands for "No Offset". /-:
>
> Opinions?
>

-- 
Best regards,
 Daniel Dekany


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