--- On Thu, 9/20/12, Pascal Robert <prob...@macti.ca> wrote:
> From: Pascal Robert <prob...@macti.ca> > Subject: Re: Migrations and dev cycle > To: "David Holt" <programming...@mac.com> > Cc: "WebObjects Development" <webobjects-dev@lists.apple.com> > Date: Thursday, September 20, 2012, 4:45 PM > > Le 2012-09-20 à 16:42, David Holt <programming...@mac.com> > a écrit : > > > Also, can you use dependencies to mitigate the risk of > doing something incorrectly? > > > > Can you always do migrations in trunk regardless of > where the necessity for them is being created? > > The problem is that if the migration is adding a non-null > column, and the model don't have the attribute, the INSERT > or UPDATE will fail. If you had it to the model, you need to > add a value to that new column. I had this problem. My solution was: migration 3 update the database with allows null on the column migration 4 (sometime in the future update the database records in the attribute that will require non-nulls. migration 5 update the database to require non-nulls. does this do what you are trying to do? Ted > > > > > On 2012-09-20, at 1:32 PM, Maik Musall wrote: > > > >> > >> Am 20.09.2012 um 21:22 schrieb Pascal Robert <prob...@macti.ca>: > >> > >>> Hi guys, > >>> > >>> I was wondering how do you deal with situations > where your development branch is having migrations that are > NOT part of trunk/current release but that you need to do a > migration for a fix in trunk? > >>> > >>> Let's say trunk is at migration 2 (on the prod > database), but the "super new features" branch is at > migration 5 (on the dev database), creating a migration 3 in > trunk will create problems when trunk is merged with the > "super new features" branch, and doing a migration 6 in > trunk will make that migration 3-4-5 won't be executed in > prod since prod will already be at version 6. > >> > >> My experiences with migrations are very limited so > far, but how about making it a habit to do migrations as a > separate commit, so you could cherry-pick migration 3 > separately into trunk? > >> > >> Maik > >> _______________________________________________ > >> Do not post admin requests to the list. They will > be ignored. > >> Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) > >> Help/Unsubscribe/Update your Subscription: > >> https://lists.apple.com/mailman/options/webobjects-dev/programmingosx%40mac.com > >> > >> This email sent to programming...@mac.com > > > > > _______________________________________________ > Do not post admin requests to the list. They will be > ignored. > Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/webobjects-dev/tedpet5%40yahoo.com > > This email sent to tedp...@yahoo.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
