Another option is using the before_destroy callback to do the check:
http://apidock.com/rails/ActiveRecord/Callbacks/before_destroy


On Mon, Mar 9, 2009 at 9:27 AM, Ar Chron
<rails-mailing-l...@andreas-s.net>wrote:

>
> vimal wrote:
> > Then i removed the pattern which was used by a schedule.
> > How can i avoid this action.
> >
>
> As the old family physician used to say, "If it hurts, don't do it."
>
> If you want to protect against pattern deletion, you could just
> eliminate the destroy method from the Pattern controller, and make the
> Pattern destroy happen only through the "parent" Schedule destroy.
>
> --
> Posted via http://www.ruby-forum.com/.
>
> >
>

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