Migration error

Actual behavior

throwing error on ./manage.py migrate

  Applying zinnia.0001_initial... OK
  Applying zinnia.0002_lead_paragraph_and_image_caption... OK
  Applying zinnia.0003_publication_date...Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 363, in execute_from_command_line
    utility.execute()
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 355, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/core/management/commands/test.py", line 29, in run_from_argv
    super(Command, self).run_from_argv(argv)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/core/management/base.py", line 283, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/core/management/base.py", line 330, in execute
    output = self.handle(*args, **options)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/core/management/commands/test.py", line 62, in handle
    failures = test_runner.run_tests(test_labels)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django_nose/runner.py", line 303, in run_tests
    result = self.run_suite(nose_argv)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django_nose/runner.py", line 241, in run_suite
    addplugins=plugins_to_add)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/nose/core.py", line 121, in __init__
    **extra_args)
  File "/usr/lib/python2.7/unittest/main.py", line 95, in __init__
    self.runTests()
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/nose/core.py", line 207, in runTests
    result = self.testRunner.run(self.test)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/nose/core.py", line 50, in run
    wrapper = self.config.plugins.prepareTest(test)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/nose/plugins/manager.py", line 99, in __call__
    return self.call(*arg, **kw)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/nose/plugins/manager.py", line 167, in simple
    result = meth(*arg, **kw)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django_nose/plugin.py", line 82, in prepareTest
    return super(NoseTestSuiteRunner, self).setup_databases()
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/test/runner.py", line 546, in setup_databases
    self.old_names = self.runner.setup_databases()
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django_nose/runner.py", line 490, in setup_databases
    self.parallel, **kwargs
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/test/utils.py", line 187, in setup_databases
    serialize=connection.settings_dict.get('TEST', {}).get('SERIALIZE', True),
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/db/backends/base/creation.py", line 69, in create_test_db
    run_syncdb=True,
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 130, in call_command
    return command.execute(*args, **defaults)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/core/management/base.py", line 330, in execute
    output = self.handle(*args, **options)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 204, in handle
    fake_initial=fake_initial,
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/db/migrations/executor.py", line 115, in migrate
    state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/db/migrations/executor.py", line 145, in _migrate_all_forwards
    state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/db/migrations/executor.py", line 244, in apply_migration
    state = migration.apply(state, schema_editor)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/db/migrations/migration.py", line 129, in apply
    getattr(new_model._meta, self.option_name, set()),
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/db/backends/base/schema.py", line 364, in alter_index_together
    operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/db/migrations/operations/models.py", line 590, in database_forwards
    self._delete_composed_index(model, fields, {'index': True}, self.sql_delete_index)
  File "/home/runner/aktienregister/.ve/local/lib/python2.7/site-packages/django/db/backends/base/schema.py", line 377, in _delete_composed_index
    ", ".join(columns),
ValueError: Found wrong number (0) of constraints for zinnia_entry(status, creation_date, start_publication, end_publication)

Expected behavior

no exception 😃

This is happening on my CI only, on dev servers/ local instances I cannot reproduce it.

I fully understand that there are good chances that it’s caused by some env setup. But I have no clue how to debug that. Hence this ticket with the question if there is anything known like that… just close and ignore if there is nothing you can help with…

Steps to reproduce the issue

it’s happening on my CI env after installing all required dependencies

Specifications

• Zinnia version: 0.18.1
• Django version: 1.11
• Python version: 2.7.3
• Operating system: Ubuntu 16.04

Disclaimer

Please read these questions carefully and answer honestly with an x into all the boxes [ ]:

• I have read the guidelines for contributing linked to above.
• I have checked for duplicate issues.
• This is not a support request.

[Mactory]

I have submitted a bug-report and also a patch to the django team. https://code.djangoproject.com/ticket/28197 https://github.com/django/django/pull/8495

We’ll see if the django team likes my solution or if they prefer to solve it differently.

[benjaoming]

Just a quick note: I could reproduce this issue on Django 1.10.8 and 1.10.7 using Postgres 9.5.

If others run into this issue, a quick fix is to patch up 0003_publication_date.py, removing this part:

        migrations.AlterIndexTogether(
            name='entry',
            index_together=set([
                ('slug', 'publication_date'),
                ('status', 'publication_date',
                 'start_publication', 'end_publication')]),
        ),