id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
22470	Migrations fail with order_with_respect_to and ForeignKey to self	Jonas von Poser	Andrew Godwin	"Initial migrations for an app with this kind of model setup will fail when running `./manage.py migrate`:

{{{#!python
class Parent(models.Model):
    spouse = models.ForeignKey('self')

class Child(models.Model):
    parent = models.ForeignKey(Parent)

    class Meta:
        order_with_respect_to = 'parent'
}}}

This is the resulting traceback:

{{{
  File ""./manage.py"", line 10, in <module>
    execute_from_command_line(sys.argv)
  File ""/home/jonas/temp/django/django/core/management/__init__.py"", line 427, in execute_from_command_line
    utility.execute()
  File ""/home/jonas/temp/django/django/core/management/__init__.py"", line 419, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File ""/home/jonas/temp/django/django/core/management/base.py"", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File ""/home/jonas/temp/django/django/core/management/base.py"", line 337, in execute
    output = self.handle(*args, **options)
  File ""/home/jonas/temp/django/django/core/management/commands/migrate.py"", line 145, in handle
    executor.migrate(targets, plan, fake=options.get(""fake"", False))
  File ""/home/jonas/temp/django/django/db/migrations/executor.py"", line 60, in migrate
    self.apply_migration(migration, fake=fake)
  File ""/home/jonas/temp/django/django/db/migrations/executor.py"", line 88, in apply_migration
    if self.detect_soft_applied(migration):
  File ""/home/jonas/temp/django/django/db/migrations/executor.py"", line 132, in detect_soft_applied
    apps = project_state.render()
  File ""/home/jonas/temp/django/django/db/migrations/state.py"", line 48, in render
    model.render(self.apps)
  File ""/home/jonas/temp/django/django/db/migrations/state.py"", line 232, in render
    body,
  File ""/home/jonas/temp/django/django/db/models/base.py"", line 298, in __new__
    new_class._prepare()
  File ""/home/jonas/temp/django/django/db/models/base.py"", line 322, in _prepare
    opts._prepare(cls)
  File ""/home/jonas/temp/django/django/db/models/options.py"", line 180, in _prepare
    self.order_with_respect_to = self.get_field(self.order_with_respect_to)
  File ""/home/jonas/temp/django/django/db/models/options.py"", line 397, in get_field
    raise FieldDoesNotExist('%s has no field named %r' % (self.object_name, name))
django.db.models.fields.FieldDoesNotExist: Child has no field named 'parent'
}}}

`makemigrations` creates three migrations:

* The first migration creates the `Child` model ''without'' the `parent` field as well as the `Parent` model without the `spouse` field.
* The second migration adds the `spouse` field to `Parent`.
* The third migration adds `parent` to `Child`.

The error occurs in the first migration, when the `_prepare()` wants to access the `parent` field for `order_with_respect_to` and can't, as it doesn't exist yet.

I tried adding a test in Django proper but wasn't able to. Will keep trying but support is appreciated."	Bug	closed	Migrations	1.7-beta-1	Release blocker	fixed	migrations order_with_respect_to	Jonas von Poser Shai Berger jezevec beathan	Accepted	0	0	0	0	0	0