#25521: squashmigrations tries to add foreign keys to removed models
-------------------------------------+-------------------------------------
Reporter: keturn | Owner: nobody
Type: | Status: closed
Cleanup/optimization |
Component: Migrations | Version: 1.8
Severity: Normal | Resolution: needsinfo
Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Changes (by timgraham):
* status: new => closed
* resolution: => needsinfo
* needs_tests: => 0
* needs_better_patch: => 0
* needs_docs: => 0
* type: Uncategorized => Cleanup/optimization
Comment:
I think we'll need more specific steps to reproduce the issue. Here's what
I tried:
{{{
$ python manage.py makemigrations
Migrations for 'bar':
0001_initial.py:
- Create model Bar: class Bar(models.Model): pass
Migrations for 'foo':
0001_initial.py:
- Create model Foo: class Foo(models.Model): pass
$ python manage.py makemigrations
Migrations for 'foo':
0002_foo_bar.py:
- Add field bar to foo: bar = models.ForeignKey('bar.Bar', null=True,
blank=True)
$ python manage.py makemigrations
Migrations for 'foo':
0003_remove_foo_bar.py:
- Remove field bar from foo
$ python manage.py makemigrations
Migrations for 'bar':
0002_delete_bar.py:
- Delete model Bar
$ python manage.py squashmigrations foo 0003
Will squash the following migrations:
- 0001_initial
- 0002_foo_bar
- 0003_remove_foo_bar
Do you wish to proceed? [yN] y
Optimizing...
Optimized from 3 operations to 1 operations.
Created new squashed migration
/home/tim/code/mysite/foo/migrations/0001_squashed_0003_remove_foo_bar.py
You should commit this migration but leave the old ones in place;
the new migration will be used for new installs. Once you are sure
all instances of the codebase have applied the migrations you squashed,
you can delete them.
$ python manage.py migrate
Operations to perform:
Apply all migrations: bar, sessions, auth, admin, contenttypes, polls,
foo
Running migrations:
Rendering model states... DONE
Applying bar.0001_initial... OK
Applying bar.0002_delete_bar... OK
Applying foo.0001_squashed_0003_remove_foo_bar... OK
}}}
Tested at a76309f007fff6957f39190b06f8a9055f73130f (Django 1.10.dev).
--
Ticket URL: <https://code.djangoproject.com/ticket/25521#comment:1>
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