I downloaded the latest code from stable/1.7.x branch and this problem no
longer exists.
On Monday, August 4, 2014 8:06:00 AM UTC-7, Sam Contapay wrote:
>
> Hi,
>
> I tried adding a foreign key to a model in a Django app I'm building to
> learn 1.7. I am using Python 3.4 and Django 1.7c2
>
> #blog/models.py
>
> from django.contrib.auth.models import User
> from django.db import models
>
> class Comment(models.Model):
> user = models.ForeignKey(User, blank=True, null=True)
> created_at = models.DateTimeField(auto_now=True)
> comment = models.CharField(max_length=255)
>
> This is an already existing database I ran "manage.py makemigrations" and
> "manage.py migrate". Make migration works fine but running migrate
> generates this error (I am not using a custom user model). I don't
> understand 'auth' not found as it is in my project settings and I am using
> the admin panel:
>
> (screens)*➜ **screens **git:(**master**) **✗* ./manage.py migrate
>
> *Operations to perform:*
>
> * Synchronize unmigrated apps: *django_extensions, crispy_forms
>
> * Apply all migrations: *auth, admin, contenttypes, sessions, website
>
> *Synchronizing apps without migrations:*
>
> Creating tables...
>
> Installing custom SQL...
>
> Installing indexes...
>
> *Running migrations:*
>
> Applying website.0004_comment_created_by_user...Traceback (most recent
> call last):
>
> File
> "/Users/scontapay/.pyenv/versions/screens/lib/python3.4/site-packages/django/apps/registry.py",
>
> line 148, in get_app_config
>
> return self.app_configs[app_label]
>
> KeyError: 'auth'
>
>
> During handling of the above exception, another exception occurred:
>
>
> Traceback (most recent call last):
>
> File
> "/Users/scontapay/.pyenv/versions/screens/lib/python3.4/site-packages/django/db/migrations/state.py",
>
> line 79, in render
>
> model = self.apps.get_model(lookup_model[0], lookup_model[1])
>
> File
> "/Users/scontapay/.pyenv/versions/screens/lib/python3.4/site-packages/django/apps/registry.py",
>
> line 202, in get_model
>
> return self.get_app_config(app_label).get_model(model_name.lower())
>
> File
> "/Users/scontapay/.pyenv/versions/screens/lib/python3.4/site-packages/django/apps/registry.py",
>
> line 150, in get_app_config
>
> raise LookupError("No installed app with label '%s'." % app_label)
>
> LookupError: No installed app with label 'auth'.
>
>
> During handling of the above exception, another exception occurred:
>
>
> Traceback (most recent call last):
>
> File "./manage.py", line 10, in <module>
>
> execute_from_command_line(sys.argv)
>
> File
> "/Users/scontapay/.pyenv/versions/screens/lib/python3.4/site-packages/django/core/management/__init__.py",
>
> line 385, in execute_from_command_line
>
> utility.execute()
>
> File
> "/Users/scontapay/.pyenv/versions/screens/lib/python3.4/site-packages/django/core/management/__init__.py",
>
> line 377, in execute
>
> self.fetch_command(subcommand).run_from_argv(self.argv)
>
> File
> "/Users/scontapay/.pyenv/versions/screens/lib/python3.4/site-packages/django/core/management/base.py",
>
> line 288, in run_from_argv
>
> self.execute(*args, **options.__dict__)
>
> File
> "/Users/scontapay/.pyenv/versions/screens/lib/python3.4/site-packages/django/core/management/base.py",
>
> line 337, in execute
>
> output = self.handle(*args, **options)
>
> File
> "/Users/scontapay/.pyenv/versions/screens/lib/python3.4/site-packages/django/core/management/commands/migrate.py",
>
> line 160, in handle
>
> executor.migrate(targets, plan, fake=options.get("fake", False))
>
> File
> "/Users/scontapay/.pyenv/versions/screens/lib/python3.4/site-packages/django/db/migrations/executor.py",
>
> line 63, in migrate
>
> self.apply_migration(migration, fake=fake)
>
> File
> "/Users/scontapay/.pyenv/versions/screens/lib/python3.4/site-packages/django/db/migrations/executor.py",
>
> line 91, in apply_migration
>
> if self.detect_soft_applied(migration):
>
> File
> "/Users/scontapay/.pyenv/versions/screens/lib/python3.4/site-packages/django/db/migrations/executor.py",
>
> line 135, in detect_soft_applied
>
> apps = project_state.render()
>
> File
> "/Users/scontapay/.pyenv/versions/screens/lib/python3.4/site-packages/django/db/migrations/state.py",
>
> line 89, in render
>
> model=lookup_model,
>
> ValueError: Lookup failed for model referenced by field
> website.Comment.created_by_user: auth.User
>
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