Thanks Simon, I've filed a new ticket https://code.djangoproject.com/ticket/28884
Emanuele On Monday, December 4, 2017 at 6:00:30 PM UTC+1, Simon Charette wrote: > > Hello there, > > This looks like a regression in Django 2.0 caused by 095c1aaa[0]. > > Please file a new ticket mentioning it's a regression in Django 2.0 > and mark it as a release blocker. [1] > > Thanks, > Simon > > [0] > https://github.com/django/django/commit/095c1aaa898bed40568009db836aa8434f1b983d > [1] https://code.djangoproject.com/newticket > > Le lundi 4 décembre 2017 08:19:50 UTC-5, [email protected] a écrit : >> >> With Django==2.0, a RenameField on a model which has a reverse many to >> many relationship raises an exception: >> >> AttributeError: 'ManyToManyRel' object has no attribute 'field_name' >> >> The same migration with Django==1.11 terminates successfully. >> >> Migrations are automatically generated by `manage.py makemigrations`. >> >> Am I missing something? >> >> Below the code and the commands to reproduce the problem: >> >> # myapp/models.py >> >> from django.db import models >> >> >> class ModelA(models.Model): >> new_name = models.IntegerField() >> >> >> class ModelB(models.Model): >> model_as = models.ManyToManyField('ModelA') >> >> # myapp/migrations/0001_initial.py >> >> from django.db import migrations, models >> >> >> class Migration(migrations.Migration): >> >> initial = True >> >> dependencies = [ >> ] >> >> operations = [ >> migrations.CreateModel( >> name='ModelA', >> fields=[ >> ('id', models.AutoField(auto_created=True, >> primary_key=True, serialize=False, verbose_name='ID')), >> ('old_name', models.IntegerField()), >> ], >> ), >> migrations.CreateModel( >> name='ModelB', >> fields=[ >> ('id', models.AutoField(auto_created=True, >> primary_key=True, serialize=False, verbose_name='ID')), >> ('model_as', models.ManyToManyField(to='myapp.ModelA')), >> ], >> ), >> ] >> >> # myapp/migrations/0002_auto_20171204_1012.py >> >> from django.db import migrations >> >> >> class Migration(migrations.Migration): >> >> dependencies = [ >> ('myapp', '0001_initial'), >> ] >> >> operations = [ >> migrations.RenameField( >> model_name='modela', >> old_name='old_name', >> new_name='new_name', >> ), >> ] >> >> $ ./manage.py migrate >> Operations to perform: >> Apply all migrations: admin, auth, contenttypes, myapp, sessions >> Running migrations: >> Applying contenttypes.0001_initial... OK >> Applying auth.0001_initial... OK >> Applying admin.0001_initial... OK >> Applying admin.0002_logentry_remove_auto_add... OK >> Applying contenttypes.0002_remove_content_type_name... OK >> Applying auth.0002_alter_permission_name_max_length... OK >> Applying auth.0003_alter_user_email_max_length... OK >> Applying auth.0004_alter_user_username_opts... OK >> Applying auth.0005_alter_user_last_login_null... OK >> Applying auth.0006_require_contenttypes_0002... OK >> Applying auth.0007_alter_validators_add_error_messages... OK >> Applying auth.0008_alter_user_username_max_length... OK >> Applying auth.0009_alter_user_last_name_max_length... OK >> Applying myapp.0001_initial... OK >> Applying myapp.0002_auto_20171204_1012...Traceback (most recent call >> last): >> File "./manage.py", line 15, in <module> >> execute_from_command_line(sys.argv) >> File >> "/home/edg/src/example/env/lib/python3.6/site-packages/django/core/management/__init__.py", >> >> line 371, in execute_from_command_line >> utility.execute() >> File >> "/home/edg/src/example/env/lib/python3.6/site-packages/django/core/management/__init__.py", >> >> line 365, in execute >> self.fetch_command(subcommand).run_from_argv(self.argv) >> File >> "/home/edg/src/example/env/lib/python3.6/site-packages/django/core/management/base.py", >> >> line 288, in run_from_argv >> self.execute(*args, **cmd_options) >> File >> "/home/edg/src/example/env/lib/python3.6/site-packages/django/core/management/base.py", >> >> line 335, in execute >> output = self.handle(*args, **options) >> File >> "/home/edg/src/example/env/lib/python3.6/site-packages/django/core/management/commands/migrate.py", >> >> line 200, in handle >> fake_initial=fake_initial, >> File >> "/home/edg/src/example/env/lib/python3.6/site-packages/django/db/migrations/executor.py", >> >> line 117, in migrate >> state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, >> fake_initial=fake_initial) >> File >> "/home/edg/src/example/env/lib/python3.6/site-packages/django/db/migrations/executor.py", >> >> line 147, in _migrate_all_forwards >> state = self.apply_migration(state, migration, fake=fake, >> fake_initial=fake_initial) >> File >> "/home/edg/src/example/env/lib/python3.6/site-packages/django/db/migrations/executor.py", >> >> line 244, in apply_migration >> state = migration.apply(state, schema_editor) >> File >> "/home/edg/src/example/env/lib/python3.6/site-packages/django/db/migrations/migration.py", >> >> line 122, in apply >> operation.database_forwards(self.app_label, schema_editor, old_state, >> project_state) >> File >> "/home/edg/src/example/env/lib/python3.6/site-packages/django/db/migrations/operations/fields.py", >> >> line 304, in database_forwards >> to_model._meta.get_field(self.new_name), >> File >> "/home/edg/src/example/env/lib/python3.6/site-packages/django/db/backends/sqlite3/schema.py", >> >> line 81, in alter_field >> any(r.field_name == old_field.name for r in >> model._meta.related_objects)): >> File >> "/home/edg/src/example/env/lib/python3.6/site-packages/django/db/backends/sqlite3/schema.py", >> >> line 81, in <genexpr> >> any(r.field_name == old_field.name for r in >> model._meta.related_objects)): >> AttributeError: 'ManyToManyRel' object has no attribute 'field_name' >> >> $ pip freeze >> Django==2.0 >> pytz==2017.3 >> > -- You received this message because you are subscribed to the Google Groups "Django users" group. 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