#23065: Migration Error when removing unique constraint
----------------------------+------------------------
Reporter: anonymous | Owner: nobody
Type: Bug | Status: new
Component: Migrations | Version: 1.7-rc-1
Severity: Normal | Keywords: migrations
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
----------------------------+------------------------
I try to make a migration which simple removes "unique = True" from a
field. and get the error below.
Note this is nothing to do with Django's standard auth module, but a
custom implementation, as far as I can see that should have nothing to do
with it.
This is a private project so I can't give many more details than this. I'm
using Postgres and the current 1.7 rc.
{{{
python manage.py makemigrations
Migrations for 'Auth':
0003_auto_20140721_1413.py:
- Alter field name on permission
(env)samuel || python manage.py migrate
Operations to perform:
Synchronize unmigrated apps: bootstrapform, django_jinja, admin_tools,
theming, dashboard
Apply all migrations: Schedule, admin, sessions, auth, contenttypes,
Accounts, Auth, CRM
Synchronizing apps without migrations:
Creating tables...
Installing custom SQL...
Installing indexes...
Running migrations:
Applying Auth.0003_auto_20140721_1413...Traceback (most recent call
last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/core/management/__init__.py", line 385, in
execute_from_command_line
utility.execute()
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/core/management/__init__.py", line 377, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/core/management/base.py", line 288, in run_from_argv
self.execute(*args, **options.__dict__)
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/core/management/base.py", line 337, in execute
output = self.handle(*args, **options)
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/core/management/commands/migrate.py", line 160, in handle
executor.migrate(targets, plan, fake=options.get("fake", False))
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/db/migrations/executor.py", line 62, in migrate
self.apply_migration(migration, fake=fake)
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/db/migrations/executor.py", line 96, in apply_migration
migration.apply(project_state, schema_editor)
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/db/migrations/migration.py", line 107, in apply
operation.database_forwards(self.app_label, schema_editor,
project_state, new_state)
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/db/migrations/operations/fields.py", line 131, in
database_forwards
schema_editor.alter_field(from_model, from_field, to_field)
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/db/backends/schema.py", line 506, in alter_field
self._alter_field(model, old_field, new_field, old_type, new_type,
old_db_params, new_db_params, strict)
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/db/backends/schema.py", line 525, in _alter_field
"name": constraint_name,
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/db/backends/schema.py", line 98, in execute
cursor.execute(sql, params)
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/db/backends/utils.py", line 81, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/path/to/project/env/local/lib/python2.7/site-
packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: constraint "auth_permission_name_key" of
relation "Auth_permission" does not exist
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/23065>
Django <https://code.djangoproject.com/>
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