#34820: Change the properties of ForeignObject object, such as blank, null, and
execute migrate to report an error
-------------------------------------+-------------------------------------
Reporter: puc_dong | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 4.2
(models, ORM) |
Severity: Normal | Resolution:
Keywords: | Triage Stage:
| Unreviewed
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by puc_dong):
{{{
(simpleui) ☁ test_migations python manage.py makemigrations
System check identified some issues:
WARNINGS:
app_1.Model1: (models.W042) Auto-created primary key used when not
defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the
App1Config.default_auto_field attribute to point to a subclass of
AutoField, e.g. 'django.db.models.BigAutoField'.
app_2.Model2: (models.W042) Auto-created primary key used when not
defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the
App2Config.default_auto_field attribute to point to a subclass of
AutoField, e.g. 'django.db.models.BigAutoField'.
Migrations for 'app_1':
app_1/migrations/0001_initial.py
- Create model Model1
Migrations for 'app_2':
app_2/migrations/0001_initial.py
- Create model Model2
(simpleui) ☁ test_migations python manage.py migrate
System check identified some issues:
WARNINGS:
app_1.Model1: (models.W042) Auto-created primary key used when not
defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the
App1Config.default_auto_field attribute to point to a subclass of
AutoField, e.g. 'django.db.models.BigAutoField'.
app_2.Model2: (models.W042) Auto-created primary key used when not
defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the
App2Config.default_auto_field attribute to point to a subclass of
AutoField, e.g. 'django.db.models.BigAutoField'.
Operations to perform:
Apply all migrations: admin, app_1, app_2, auth, contenttypes, 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 admin.0003_logentry_add_action_flag_choices... OK
Applying app_1.0001_initial... OK
Applying app_2.0001_initial... 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 auth.0010_alter_group_name_max_length... OK
Applying auth.0011_update_proxy_permissions... OK
Applying auth.0012_alter_user_first_name_max_length... OK
Applying sessions.0001_initial... OK
**Add blank=True to the scenes field of Model2**
(simpleui) ☁ test_migations python manage.py makemigrations
System check identified some issues:
WARNINGS:
app_1.Model1: (models.W042) Auto-created primary key used when not
defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the
App1Config.default_auto_field attribute to point to a subclass of
AutoField, e.g. 'django.db.models.BigAutoField'.
app_2.Model2: (models.W042) Auto-created primary key used when not
defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the
App2Config.default_auto_field attribute to point to a subclass of
AutoField, e.g. 'django.db.models.BigAutoField'.
Migrations for 'app_2':
app_2/migrations/0002_alter_model2_scenes.py
- Alter field scenes on model2
(simpleui) ☁ test_migations python manage.py migrate
System check identified some issues:
WARNINGS:
app_1.Model1: (models.W042) Auto-created primary key used when not
defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the
App1Config.default_auto_field attribute to point to a subclass of
AutoField, e.g. 'django.db.models.BigAutoField'.
app_2.Model2: (models.W042) Auto-created primary key used when not
defining a primary key type, by default 'django.db.models.AutoField'.
HINT: Configure the DEFAULT_AUTO_FIELD setting or the
App2Config.default_auto_field attribute to point to a subclass of
AutoField, e.g. 'django.db.models.BigAutoField'.
Operations to perform:
Apply all migrations: admin, app_1, app_2, auth, contenttypes, sessions
Running migrations:
Applying app_2.0002_alter_model2_scenes...Traceback (most recent call
last):
File "/Users/donghao/test/test_migations/manage.py", line 22, in
<module>
execute_from_command_line(sys.argv)
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/core/management/__init__.py", line 442, in
execute_from_command_line
utility.execute()
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/core/management/__init__.py", line 436, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/core/management/base.py", line 412, in run_from_argv
self.execute(*args, **cmd_options)
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/core/management/base.py", line 458, in execute
output = self.handle(*args, **options)
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/core/management/base.py", line 106, in wrapper
res = handle_func(*args, **kwargs)
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/core/management/commands/migrate.py", line 356, in handle
post_migrate_state = executor.migrate(
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/db/migrations/executor.py", line 135, in migrate
state = self._migrate_all_forwards(
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/db/migrations/executor.py", line 167, in
_migrate_all_forwards
state = self.apply_migration(
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/db/migrations/executor.py", line 252, in apply_migration
state = migration.apply(state, schema_editor)
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/db/migrations/migration.py", line 132, in apply
operation.database_forwards(
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/db/migrations/operations/fields.py", line 235, in
database_forwards
schema_editor.alter_field(from_model, from_field, to_field)
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/db/backends/base/schema.py", line 785, in alter_field
if not self._field_should_be_altered(old_field, new_field):
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/db/backends/base/schema.py", line 1520, in
_field_should_be_altered
return self.quote_name(old_field.column) != self.quote_name(
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/db/backends/base/schema.py", line 204, in quote_name
return self.connection.ops.quote_name(name)
File "/Users/donghao/.virtualenvs/simpleui/lib/python3.9/site-
packages/django/db/backends/mysql/operations.py", line 184, in quote_name
if name.startswith("`") and name.endswith("`"):
AttributeError: 'NoneType' object has no attribute 'startswith'
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/34820#comment:7>
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