Hello! Is there an easy way to get a time in a particular time zone without calling Time.zone = some_zone ? I store events in UTC in the DB, and I also store a string representation of the time zone as an attribute on the event. What works is to do: Time.zone = event.time_zone start_time = event.start.in_time_zone # and now I have the start time in the appropriate time zone The problem, however, is that Time.zone = event.time_zone sets it across the whole application, as best as I can tell. And I don't want that!! I could grab the Time.zone value, change it as above, then change it back, but that's so ugly. What would be wonderful is if there was something like: start_time = event.start.in_time_zone(event.time_zone) *sigh* Anything like that? Any advice? This isn't an issue with a user's local time zone, but rather just trying to show a PST time as 8am PST and an EST time as 11am EST even if both are stored as 15:00:00 (in UTC) Thoughts? -Danimal
on 2009-04-08 04:13
on 2009-04-08 05:51
Either I'm not understanding what you want, or this is real easy. Let's say I have a class Event with a field edate, which is stored in UTC: >> e = Event.find(1) => #<Event id: 1, edate: "2009-03-30 12:00:00"> >> e.edate => Mon, 30 Mar 2009 12:00:00 UTC +00:00 >> e.edate.class => ActiveSupport::TimeWithZone Now Let's say you want the time in "America New York" zone. First, create a new TimeZone object: >> ze = ActiveSupport::TimeZone.new("Eastern Time (US & Canada)") => #<ActiveSupport::TimeZone:0xb780fb80 @utc_offset=-18000, @name="Eastern Time (US & Canada)", @tzinfo=#<TZInfo::DataTimezone: America/New_York>> Then: >> e.edate.in_time_zone(ze) => Mon, 30 Mar 2009 08:00:00 EDT -04:00 So in summary, I think you just need this: local_zone = ActiveSupport::TimeZone.new("name_of_time_zone") local_time = time_in_utc.in_time_zone(local_zone) You will need to see the documentation for TimeZone for the names of all the zones.
on 2009-04-08 06:03
Rick, You are _THE MAN!_. Thank you! For some reason, I was getting all confused with all the various Time, Date, TimeZone, TimeWithZone, etc. objects. I hacked together something that worked, but it was a bit more complex than what you had. I didn't realized that you could pass a TimeZone object to in_time_zone. I'm gonna clean it up according to what you suggested. Whew! Thanks, -Danimal
on 2009-04-27 09:30
Thanks a lot i got it..