Django 1.7 test migration on ForeignKeys with default value

I have a problem concerning testing my app including migrations on ForeignKey modelfields having a default value (see example below, the field is marked red).

I don't know if that's a bug in Django 1.7 testing migrations or if I'm doing something wrong


models.py:

RULE_SET_MODE__ACTIVE = "Active"

def default_mode():
    return RuleSetMode.objects.get(name=RULE_SET_MODE__ACTIVE)

class RuleSetMode(models.Model):
    name = models.CharField(max_length=30)
    description = models.CharField(max_length=255)

class RuleSet(models.Model):
    name = models.CharField(max_length=30, unique=True)
    description = models.CharField(max_length=255)
    mode = models.ForeignKey(RuleSetMode, default=default_mode)

I tried following migration steps so far:

1. created an initial migration with default value (function)
2. created an initial migration without default value and created a second migration altering the field by setting the default value

None of them worked for me. So you can see that the problem is not related to migrating the field itself. It's just related to the fact that migrations exists for the app.

(Overriding the save method would be a solution, but I would prefer setting the default attribute)

 migrations file (altering the existing field):

# -*- coding: utf-8 -*-
from __future__ import unicode_literals

from django.db import models, migrations
import myapp.models


class Migration(migrations.Migration):

    dependencies = [
        ('myapp', '0001_initial'),
    ]

    operations = [
        migrations.AlterField(
            model_name='ruleset',
            name='mode',
            field=models.ForeignKey(default=myapp.models.default_mode, to='myapp.RuleSetMode'),
        ),
    ]

The output executing: python manage.py test myapp:
.....
Creating test database for alias 'default'...
Traceback (most recent call last):
  File "manage.py", line 16, in <module>
    execute_from_command_line(sys.argv)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/core/management/__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/core/management/__init__.py", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/core/management/commands/test.py", line 50, in run_from_argv
    super(Command, self).run_from_argv(argv)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/core/management/commands/test.py", line 71, in execute
    super(Command, self).execute(*args, **options)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/core/management/base.py", line 338, in execute
    output = self.handle(*args, **options)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/core/management/commands/test.py", line 88, in handle
    failures = test_runner.run_tests(test_labels)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/test/runner.py", line 147, in run_tests
    old_config = self.setup_databases()
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/test/runner.py", line 109, in setup_databases
    return setup_databases(self.verbosity, self.interactive, **kwargs)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/test/runner.py", line 299, in setup_databases
    serialize=connection.settings_dict.get("TEST_SERIALIZE", True),
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/backends/creation.py", line 374, in create_test_db
    test_flush=True,
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/core/management/__init__.py", line 115, in call_command
    return klass.execute(*args, **defaults)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/core/management/base.py", line 338, in execute
    output = self.handle(*args, **options)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/core/management/commands/migrate.py", line 160, in handle
    executor.migrate(targets, plan, fake=options.get("fake", False))
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/migrations/executor.py", line 63, in migrate
    self.apply_migration(migration, fake=fake)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/migrations/executor.py", line 97, in apply_migration
    migration.apply(project_state, schema_editor)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/migrations/migration.py", line 107, in apply
    operation.database_forwards(self.app_label, schema_editor, project_state, new_state)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/migrations/operations/fields.py", line 131, in database_forwards
    schema_editor.alter_field(from_model, from_field, to_field)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/backends/schema.py", line 509, in alter_field
    self._alter_field(model, old_field, new_field, old_type, new_type, old_db_params, new_db_params, strict)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/backends/sqlite3/schema.py", line 183, in _alter_field
    self._remake_table(model, alter_fields=[(old_field, new_field)])
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/backends/sqlite3/schema.py", line 121, in _remake_table
    self.create_model(temp_model)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/backends/schema.py", line 208, in create_model
    definition, extra_params = self.column_sql(model, field)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/backends/schema.py", line 120, in column_sql
    default_value = self.effective_default(field)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/backends/schema.py", line 170, in effective_default
    default = field.get_default()
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/models/fields/related.py", line 1711, in get_default
    field_default = super(ForeignKey, self).get_default()
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/models/fields/__init__.py", line 719, in get_default
    return self.default()
  File "/usr/local/lib/python2.7/dev-packages/kiola/kiola_alfred/models.py", line 33, in default_mode
    return RuleSetMode.objects.get(name=RULE_SET_MODE__ACTIVE)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/models/manager.py", line 92, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/home/cgossy/venvs/django-1.7/local/lib/python2.7/site-packages/Django-1.7-py2.7.egg/django/db/models/query.py", line 357, in get
    self.model._meta.object_name)
myapp.models.DoesNotExist: RuleSetMode matching query does not exist.


Any ideas are welcome

christian

--
You received this message because you are subscribed to the Google Groups "Django users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscribe@googlegroups.com.
To post to this group, send email to django-users@googlegroups.com.
Visit this group at http://groups.google.com/group/django-users.
To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/c6f6f5c2-e5d4-48e5-9035-21d4bb0a3efd%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.