Rails - Oct 2007 - Time/Date prior to 1970 into negative milliseconds/seconds

Anyone know how to take a date or time prior to 1970 and convert it into
negative seconds or milliseconds?


I know there is time.to_i, but a Time object can''t be prior to 1970 or
else it will throw an error.
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On Oct 31, 11:52 am, Aryk Grosz
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> Anyone know how to take a date or time prior to 1970 and convert it into
> negative seconds or milliseconds?
>
> I know there is time.to_i, but a Time object can''t be prior to
1970 or
> else it will throw an error.
> --
> Posted viahttp://www.ruby-forum.com/.
ActiveSupport  Time#to_date
http://api.rubyonrails.org/classes/ActiveSupport/CoreExtensions/Time/Conversions.html#M000327

you should be aware that SQL server and Oracle have had gotchas
concerning Date and Datetime objects, tho i don''t recall specifics
now.


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On Oct 31, 2:18 pm, gene tani
<gene.t...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> On Oct 31, 11:52 am, Aryk Grosz
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
> wrote:
>
> > Anyone know how to take a date or time prior to 1970 and convert it
into
> > negative seconds or milliseconds?
>
> > I know there is time.to_i, but a Time object can''t be prior
to 1970 or
> > else it will throw an error.
> > --
> > Posted viahttp://www.ruby-forum.com/.
>
> ActiveSupport 
Time#to_datehttp://api.rubyonrails.org/classes/ActiveSupport/CoreExtensions/Time/...
>
> you should be aware that SQL server and Oracle have had gotchas
> concerning Date and Datetime objects, tho i don''t recall specifics
> now.
BTW: Oracle and SQLserver:

http://dev.rubyonrails.org/ticket/3430
http://blog.rayapps.com/2007/08/27/how-to-explicitly-set-oracle-date-column-as-ruby-date-attribute/


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Right, Im aware of the to_date function, but that returns a date object.

What im trying to do is a take a Date object occurring before 1970 and 
convert it into  negative milliseconds/seconds.

so I want the resulting value to be a negative integer. So what you are 
showing me doesnt work unless you can craft a simple proof of concept 
using those functions.

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Aryk Grosz <rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> What im trying to do is a take a Date object occurring before 1970 and 
> convert it into  negative milliseconds/seconds.
  This will do seconds:

irb(main):005:0> require "date"
=> true
irb(main):006:0> d = Date.parse("1950-01-01")
=> #<Date: 4866565/2,0,2299161>
irb(main):007:0> d.strftime("%s")
=> "-631152000"
irb(main):008:0> d.strftime("%s").to_i
=> -631152000

  Cheers,
    Tyler

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Thanks Tyler, you''re awesome.
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