#23160: KeyError when performing a RenameModel migration operation for a model
with
self-referential FK field
----------------------------+----------------------
Reporter: whitews@… | Owner: nobody
Type: Bug | Status: new
Component: Migrations | Version: 1.7-rc-2
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
----------------------------+----------------------
I'm simply trying to rename a model which has a relationship to itself.
Running the RenameModel operation yields the following traceback:
$ python manage.py migrate myapp
Operations to perform:
Apply all migrations: myapp
Running migrations:
Applying myapp.0002_rename_Foo_to_Bar...Traceback (most recent call
last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/usr/local/lib/python2.7/dist-
packages/Django-1.7c2-py2.7.egg/django/core/management/__init__.py", line
385, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python2.7/dist-
packages/Django-1.7c2-py2.7.egg/django/core/management/__init__.py", line
377, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python2.7/dist-
packages/Django-1.7c2-py2.7.egg/django/core/management/base.py", line 288,
in run_from_argv
self.execute(*args, **options.__dict__)
File "/usr/local/lib/python2.7/dist-
packages/Django-1.7c2-py2.7.egg/django/core/management/base.py", line 338,
in execute
output = self.handle(*args, **options)
File "/usr/local/lib/python2.7/dist-
packages/Django-1.7c2-py2.7.egg/django/core/management/commands/migrate.py",
line 160, in handle
executor.migrate(targets, plan, fake=options.get("fake", False))
File "/usr/local/lib/python2.7/dist-
packages/Django-1.7c2-py2.7.egg/django/db/migrations/executor.py", line
63, in migrate
self.apply_migration(migration, fake=fake)
File "/usr/local/lib/python2.7/dist-
packages/Django-1.7c2-py2.7.egg/django/db/migrations/executor.py", line
91, in apply_migration
if self.detect_soft_applied(migration):
File "/usr/local/lib/python2.7/dist-
packages/Django-1.7c2-py2.7.egg/django/db/migrations/executor.py", line
134, in detect_soft_applied
project_state = self.loader.project_state((migration.app_label,
migration.name), at_end=True)
File "/usr/local/lib/python2.7/dist-
packages/Django-1.7c2-py2.7.egg/django/db/migrations/loader.py", line 268,
in project_state
return self.graph.make_state(nodes=nodes, at_end=at_end,
real_apps=list(self.unmigrated_apps))
File "/usr/local/lib/python2.7/dist-
packages/Django-1.7c2-py2.7.egg/django/db/migrations/graph.py", line 147,
in make_state
project_state = self.nodes[node].mutate_state(project_state)
File "/usr/local/lib/python2.7/dist-
packages/Django-1.7c2-py2.7.egg/django/db/migrations/migration.py", line
76, in mutate_state
operation.state_forwards(self.app_label, new_state)
File "/usr/local/lib/python2.7/dist-
packages/Django-1.7c2-py2.7.egg/django/db/migrations/operations/models.py",
line 132, in state_forwards
for name, field in state.models[related_key].fields:
KeyError: ('myapp', 'foo')
--
Ticket URL: <https://code.djangoproject.com/ticket/23160>
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