[Rails-core] some (long) thoughts on migrations

[Scott Bronson]

On Mon, 2006-02-20 at 00:14 -0600, Rick Olson wrote:
> > But, this doesn't catch everything (the before_save example is unhelped, e.g.).
> > Ultimately, the developer can't (and shouldn't have to) predict what the future
> > is going to bring, and shouldn't have to code around this sort of problem.
>
> To work around this, I just started creating temporary models per
> migration.  I find that much nicer than reverting to
> ActiveRecord::Base.connection for my delicate sql needs.

> Take a look: http://techno-weenie.net/svn/projects/mephisto/trunk/db/migrate/

FWIW, I also used this technique for Typo's migrations.  It works really
well.

   http://www.typosphere.org/trac/ticket/680

(I got bogged down with some odd typoisms around the teens...  I'll
clean it up and hopefully merge it this week).