#22051: Running `makemigrations` twice in a row fails
---------------------------------+----------------------------------------
Reporter: bmispelon | Owner: andrewgodwin
Type: Bug | Status: closed
Component: Migrations | Version: master
Severity: Release blocker | Resolution: fixed
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by agbaid@…):
Replying to [comment:6 andrewgodwin]:
> I'll need more than that if I'm going to debug it - the models you used,
the full error output, the Django commit hash you're working from.
Does this help?
{{{
from django.db import models
from django.contrib.auth.models import User
from datetime import date
import string
import random
class FunStuffUser(User):
address = models.CharField(max_length=256, blank=True)
dob = models.DateField(default=date(1900, 1, 1))
class Music(models.Model):
name = models.CharField(max_length=256)
key = models.CharField(max_length=10, primary_key=True)
}}}
Here is the model and this is the error message I receive
{{{
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File
".\django-1.8.dev20140409113843-py3.3.egg\django\core\management\__init__.py",
line 4
27, in execute_from_command_line
utility.execute()
File
".\django-1.8.dev20140409113843-py3.3.egg\django\core\management\__init__.py",
line 4
19, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File
".\django-1.8.dev20140409113843-py3.3.egg\django\core\management\base.py",
line 288,
in run_from_argv
self.execute(*args, **options.__dict__)
File "C:\Python33\lib\site-
packages\django-1.8.dev20140409113843-py3.3.egg\django\core\management\base.py",
line 337,
in execute
output = self.handle(*args, **options)
File
".\django-1.8.dev20140409113843-py3.3.egg\django\core\management\commands\makemigrati
ons.py", line 99, in handle
changes = autodetector.changes(graph=loader.graph,
trim_to_apps=app_labels or None)
File
".\django-1.8.dev20140409113843-py3.3.egg\django\db\migrations\autodetector.py",
line
33, in changes
changes = self._detect_changes()
File
".\django-1.8.dev20140409113843-py3.3.egg\django\db\migrations\autodetector.py",
line
50, in _detect_changes
old_apps = self.from_state.render()
File
".\django-1.8.dev20140409113843-py3.3.egg\django\db\migrations\state.py",
line 52, in
render
raise InvalidBasesError("Cannot resolve bases for %r" %
new_unrendered_models)
django.db.migrations.state.InvalidBasesError: Cannot resolve bases for
[<django.db.migrations.state.ModelState object at 0x0000000003A65940>]
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/22051#comment:7>
Django <https://code.djangoproject.com/>
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