#23599: Default application used in startapp has an empty migration package
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Reporter: yakky | Owner: nobody
Type: Bug | Status: new
Component: Migrations | Version: 1.7
Severity: Normal | Resolution:
Keywords: migrations, | Triage Stage:
dependencies, template | Unreviewed
application | Needs documentation: 0
Has patch: 0 | Patch needs improvement: 0
Needs tests: 0 | UI/UX: 0
Easy pickings: 0 |
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Comment (by yakky):
Replying to [comment:1 apollo13]:
> > Any specific reason for shipping the migration directory in the
template application?
>
> New apps are supposed to be migration ready by default, the module
serves as marker for that.
>
> > This may trigger errors when trying to resolve model dependencies: say
for example in a newly created application with a custom user model and an
existing application which uses the custom user model and that already has
migrations.
>
> Examples? Preferably simple ones which don't involve django-cms :)
This sample project https://github.com/jsma/cmstest should be simple
enough to run. It depends on django CMS but it's just an installable
dependency.
(cmstest-user)yakky@andalu: /srv/repo/cmstest/cmstest $ ../manage.py
makemigrations accounts
django.db.migrations.state.InvalidBasesError: Cannot resolve bases for
[<ModelState: 'cms.PageUser'>]
This can happen if you are inheriting models from an app with
migrations (e.g. contrib.auth) in an app with no migrations; see
https://docs.djangoproject.com/en/1.7/topics/migrations/#dependencies for
more
By removing the empty migrations directory in cmstests.accounts the
migration is created correctly and everything applies cleanly.
--
Ticket URL: <https://code.djangoproject.com/ticket/23599#comment:2>
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