Great.
Thanks for the feedback :)
On 06/15/2015 02:18 PM, Cherie Pun wrote:
Hi,
So the original problem was that I was running in the repo which
didn't have the squashed migration. Django does know when to switch to
the squashed migrations when you have both squashed and unsquashed
migration files coexist in the folder.
As for the syntax error it was because python cannot import from
modules that starts with numbers. Also, the idea was that we shouldn't
use the migration files as modules to import code from, that's why the
file name stayed as it was. Users should manually move their RunPython
methods manually and resolve those invalid references to migration files.
Hope this helps and sorry for confusing people that squash migration
doesn't work! I am still new to Python and Django and I really
appreciate everyone's replies.
Cheers,
Cherie
On Monday, June 15, 2015 at 9:54:09 AM UTC+1, aRkadeFR wrote:
Thanks for the good explanation as always :)
From the documentation plus the explanation of the problem,
I wanted to know if by deleting the old migration it would still
run the old migrations.
Do we know the end of the story? Where it comes from?
Thanks
On 06/12/2015 05:42 PM, Carl Meyer wrote:
> On 06/12/2015 06:32 AM, aRkadeFR wrote:
>> You need to delete your old migrations so it uses only the
squashed
>> one after.
> No, the squashed migration should be used in place of the old
ones for
> any new database, even if the old ones are still present. This
is the
> point of the squashmigrations feature; that you can keep the old
ones
> around (which is necessary for any deployments that may not yet
have
> applied all of them) while still gaining the benefit of the new
squashed
> migration for new deployments (and tests).
>
> I know this works, because I just did it recently myself. It
sounds like
> Cherie was able to get it working too, though we didn't get any
> clarification on why it didn't seem to work originally.
>
>> In the documentation:
>> "This enables you to squash and not mess up systems currently in
>> production that aren’t fully up-to-date yet. The recommended
process is
>> to squash, keeping the old files, commit and release, wait
until all
>> systems are upgraded with the new release (or if you’re a
third-party
>> project, just ensure your users upgrade releases in order without
>> skipping any), and then remove the old files, commit and do a
second
>> release."
> That's right. The length of time you need to wait before
removing can
> vary widely. For a third-party app, it may be a full release
cycle or
> two (as long as you can tell your users to upgrade
version-by-version).
> For a project with only a few deployments, all under your
control, it
> may be the same day. But regardless, the squashed migration will
still
> be used in tests immediately, before you remove the old migrations.
>
> Carl
>
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