Opened 8 years ago
Closed 8 years ago
#27765 closed Bug (duplicate)
Migration to delete child model (multi-table inheritance) results in an error when using SQLite
Reported by: | Alexandru Mărășteanu | Owned by: | nobody |
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Component: | Migrations | Version: | 1.10 |
Severity: | Normal | Keywords: | |
Cc: | Triage Stage: | Unreviewed | |
Has patch: | no | Needs documentation: | no |
Needs tests: | no | Patch needs improvement: | no |
Easy pickings: | no | UI/UX: | no |
Description (last modified by )
- Create two models where one of them inherits the other:
class Foo(models.Model): test = models.CharField(max_length=256) class Bar(Foo): pass
- Generate and run migrations.
migrations/0001_initial.py
is:
... operations = [ migrations.CreateModel( name='Foo', fields=[ ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')), ('test', models.CharField(max_length=256)), ], ), migrations.CreateModel( name='Bar', fields=[ ('foo_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='foo.Foo')), ], bases=('foo.foo',), ), ] ...
- Delete the child model (
Bar
)
- Generate migrations
migrations/0002_auto_20170123_1212.py
is:
... operations = [ migrations.RemoveField( model_name='bar', name='foo_ptr', ), migrations.DeleteModel( name='Bar', ), ] ...
- Run migrations
$ python manage.py migrate Operations to perform: Apply all migrations: admin, contenttypes, foo, auth, sessions Running migrations: Rendering model states... DONE Applying foo.0002_auto_20170123_1212...Traceback (most recent call last): File "manage.py", line 10, in <module> execute_from_command_line(sys.argv) File "/djbug/lib/python2.7/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line utility.execute() File "/djbug/lib/python2.7/site-packages/django/core/management/__init__.py", line 345, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/djbug/lib/python2.7/site-packages/django/core/management/base.py", line 348, in run_from_argv self.execute(*args, **cmd_options) File "/djbug/lib/python2.7/site-packages/django/core/management/base.py", line 399, in execute output = self.handle(*args, **options) File "/djbug/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 200, in handle executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial) File "/djbug/lib/python2.7/site-packages/django/db/migrations/executor.py", line 92, in migrate self._migrate_all_forwards(plan, full_plan, fake=fake, fake_initial=fake_initial) File "/djbug/lib/python2.7/site-packages/django/db/migrations/executor.py", line 121, in _migrate_all_forwards state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial) File "/djbug/lib/python2.7/site-packages/django/db/migrations/executor.py", line 198, in apply_migration state = migration.apply(state, schema_editor) File "/djbug/lib/python2.7/site-packages/django/db/migrations/migration.py", line 123, in apply operation.database_forwards(self.app_label, schema_editor, old_state, project_state) File "/djbug/lib/python2.7/site-packages/django/db/migrations/operations/fields.py", line 121, in database_forwards schema_editor.remove_field(from_model, from_model._meta.get_field(self.name)) File "/djbug/lib/python2.7/site-packages/django/db/backends/sqlite3/schema.py", line 247, in remove_field self._remake_table(model, delete_fields=[field]) File "/djbug/lib/python2.7/site-packages/django/db/backends/sqlite3/schema.py", line 197, in _remake_table self.quote_name(model._meta.db_table), File "/djbug/lib/python2.7/site-packages/django/db/backends/base/schema.py", line 110, in execute cursor.execute(sql, params) File "/djbug/lib/python2.7/site-packages/django/db/backends/utils.py", line 79, in execute return super(CursorDebugWrapper, self).execute(sql, params) File "/djbug/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute return self.cursor.execute(sql, params) File "/djbug/lib/python2.7/site-packages/django/db/utils.py", line 95, in __exit__ six.reraise(dj_exc_type, dj_exc_value, traceback) File "/djbug/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute return self.cursor.execute(sql, params) File "/djbug/lib/python2.7/site-packages/django/db/backends/sqlite3/base.py", line 323, in execute return Database.Cursor.execute(self, query, params) django.db.utils.OperationalError: near ")": syntax error
Verified with Django (1.9.6 and 1.10.5) and SQLite 3 (sqlite3.version is 2.6.0) on macOS 10.12.2 with Python 2.7.12.
Change History (2)
comment:1 by , 8 years ago
Description: | modified (diff) |
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comment:2 by , 8 years ago
Resolution: | → duplicate |
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Status: | new → closed |
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Duplicate of #25793 which is closed as a duplicate of #24424.