id summary reporter owner description type status component version severity resolution keywords cc stage has_patch needs_docs needs_tests needs_better_patch easy ui_ux 22263 KeyError: 'to' in MigrationAutodetector with uncommon rel.to setup (django-taggit) Daniel Hahler nobody "I am getting a KeyError exception, when running manage.py migrate a second time on a Django 1.7 project (fresh DB, but migrated from 1.6). It seems like Django expects a key ""to"" in the field's deconstructor, which is not provided by the deconstructor. Traceback: {{{ % manage.py migrate Operations to perform: Synchronize unmigrated apps: djsupervisor, autocomplete_light, reversion, sessions, admin, grappelli, sites, auth, compressor, contenttypes, django_extensions, template_debug, sekizai, django_pdb, crispy_forms Apply all migrations: contenttypes, test_duration, taggit Synchronizing apps without migrations: Creating tables... Installing custom SQL... Installing indexes... Running migrations: No migrations needed. Traceback (most recent call last): File ""/home/user/.virtualenvs/tmm/bin/manage.py"", line 25, in execute_from_command_line(sys.argv) File ""…/django-master/django/core/management/__init__.py"", line 427, in execute_from_command_line utility.execute() File ""…/django-master/django/core/management/__init__.py"", line 419, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File ""…/django-master/django/core/management/base.py"", line 288, in run_from_argv self.execute(*args, **options.__dict__) File ""…/django-master/django/core/management/base.py"", line 337, in execute output = self.handle(*args, **options) File ""…/django-master/django/core/management/commands/migrate.py"", line 140, in handle changes = autodetector.changes(graph=executor.loader.graph) File ""…/django-master/django/db/migrations/autodetector.py"", line 33, in changes changes = self._detect_changes() File ""…/django-master/django/db/migrations/autodetector.py"", line 84, in _detect_changes model_fields_def = _rel_agnostic_fields_def(model_state.fields) File ""…/django-master/django/db/migrations/autodetector.py"", line 74, in _rel_agnostic_fields_def del deconstruction[2]['to'] KeyError: 'to' }}} I have tried to add a testcase for this, but failed - I've stopped when it got too bloated.. :/ There should be one added probably to `tests/migrations/test_autodetector.py`. I had reported the issue initially at: https://github.com/alex/django-taggit/issues/206" Bug closed Migrations dev Normal invalid mszamot@… Accepted 1 0 1 0 0 0