Rails - Aug 2009 - Date precedence validation (ex. Round Trip travel dates)

Hello,
I''m trying to validate 2 dates that were provided by the user using a
form
that wraps a model.

I want to do the following 2 validations in the model:
**** validate the date format   => That I know how to do!
**** if the format validation was a success, then ensure that date1 is
smaller or equal than date2  => That''s I do not know

I''ve spend, in vain,  more than 2 hours to find a solution in order to
understand:
** 1 **  How to trigger a second validation only if the first one was
an success?
** 2 ** How to compare to dates using the macros in ActiveRecord?

Any ideas?
Kind regards
Axinte

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Why not convert each date to Ruby Time objects and compare those?

--wpd

2009/8/27 Axinte Logo
<alogo-2zXVbNbNaFTHNWWW6QW1Ag@public.gmane.org>:
> Hello,
> I''m trying to validate 2 dates that were provided by the user
using a form
> that wraps a model.
> I want to do the following 2 validations in the model:
> **** validate the date format   => That I know how to do!
> **** if the format validation was a success, then ensure that date1 is
> smaller or equal than date2  => That''s I do not know
> I''ve spend, in vain,  more than 2 hours to find a solution in
order to
> understand:
> ** 1 **  How to trigger a second validation only if the first one was
> an success?
Not sure about this, you may have to provide your own validate method
in the model rather than use the built in ones (or as well as)
> ** 2 ** How to compare to dates using the macros in ActiveRecord?
Assuming they are ruby Dates or Times or DateTimes just compare them
using <= or whatever.

Colin

> Any ideas?
> Kind regards
> Axinte
validates_date_time plug in may help...
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