gistfile1.py

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

from django.db import models, migrations
import datetime

def create_lichtingen(apps, schema_editor):
  Profiel = apps.get_model("base", "Profiel")
  Lichting = apps.get_model("base", "Lichting")
  migration_user = Profiel.objects.get(uid="9999")

  Lichting.objects.create(
    naam="Onbekende lichting",
    status = "ht",
    familie = "Lichting",
    maker_user = migration_user,
    lidjaar=0
  )

  for lidjaar in range(1950, 2015):
    Lichting.objects.create(
      naam="Lichting %s" % str(lidjaar),
      lidjaar=lidjaar,
      status = "ht",
      familie = "Lichting",
      maker_user = migration_user,
    )

def lichting_groep_fill(apps, schema_editor):
  Profiel = apps.get_model("base", "Profiel")
  Lichting = apps.get_model("base", "Lichting")
  lichtingen = dict(list(map(lambda l: (l.lidjaar, l), Lichting.objects.all())))
  migration_user = Profiel.objects.get(uid="9999")

  for prof in Profiel.objects.all():
    if prof.lidjaar in lichtingen.keys():
      lichting = lichtingen.get(prof.lidjaar)
      lichting.leden.create(
        user=prof,
        opmerking="",
        lid_sinds=datetime.date(max(prof.lidjaar, datetime.MINYEAR), 1, 1),
        door_user=migration_user
      )
    else:
      print("Lid %s has invalid lidjaar %s" % (str(prof.uid), str(prof.lidjaar)))

class Migration(migrations.Migration):

    dependencies = [
        ('base', '0007_remove_profiel_verticale'),
    ]

    operations = [
        # inside transaction by default
        migrations.RunPython(create_lichtingen),
        migrations.RunPython(lichting_groep_fill),
    ]


GIVES ERROR:

Traceback (most recent call last):
  File "./manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
    utility.execute()
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/core/management/__init__.py", line 330, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/core/management/commands/test.py", line 30, in run_from_argv
    super(Command, self).run_from_argv(argv)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/core/management/base.py", line 390, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/core/management/commands/test.py", line 74, in execute
    super(Command, self).execute(*args, **options)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/core/management/base.py", line 441, in execute
    output = self.handle(*args, **options)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/core/management/commands/test.py", line 90, in handle
    failures = test_runner.run_tests(test_labels)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/test/runner.py", line 210, in run_tests
    old_config = self.setup_databases()
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/test/runner.py", line 166, in setup_databases
    **kwargs
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/test/runner.py", line 370, in setup_databases
    serialize=connection.settings_dict.get("TEST", {}).get("SERIALIZE", True),
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/db/backends/base/creation.py", line 368, in create_test_db
    test_flush=True,
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/core/management/__init__.py", line 120, in call_command
    return command.execute(*args, **defaults)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/core/management/base.py", line 441, in execute
    output = self.handle(*args, **options)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/core/management/commands/migrate.py", line 221, in handle
    executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/db/migrations/executor.py", line 110, in migrate
    self.apply_migration(states[migration], migration, fake=fake, fake_initial=fake_initial)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/db/migrations/executor.py", line 147, in apply_migration
    state = migration.apply(state, schema_editor)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/db/migrations/migration.py", line 115, in apply
    operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/db/migrations/operations/special.py", line 181, in database_forwards
    self.code(from_state.apps, schema_editor)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/src/base/migrations/0008_data_lichting_leden.py", line 17, in create_lichtingen
    lidjaar=0
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/db/models/manager.py", line 127, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/db/models/query.py", line 346, in create
    obj = self.model(**kwargs)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/db/models/base.py", line 468, in __init__
    setattr(self, field.name, rel_obj)
  File "/home/arjen/repositories/pubcie/django.csrdelft.nl/.virtualenv/lib/python3.4/site-packages/django/db/models/fields/related.py", line 627, in __set__
    self.field.rel.to._meta.object_name,
ValueError: Cannot assign "<Profiel: Profiel object>": "Lichting.maker_user" must be a "Profiel" instance.