I want my project to serve all world cities by using Django-cities.
First and after facing many problems, I made my SQLite accept spacial queries by using advice in this tutorial and this question.
So far I can run "makemigrations" but when I run "migrate" I receive: unexpected metadata layout.
I think the answer to my problem is included in this question but I'm not sure how to apply it in a Django project.
This is full text of the error when I run "migrate":
Applying cities.0001_initial...AddGeometryColumn() error: unexpected metadata layout
CreateSpatialIndex() error: "no such table: geometry_columns"
AddGeometryColumn() error: unexpected metadata layout
CreateSpatialIndex() error: "no such table: geometry_columns"
AddGeometryColumn() error: unexpected metadata layout
CreateSpatialIndex() error: "no such table: geometry_columns"
AddGeometryColumn() error: unexpected metadata layout
CreateSpatialIndex() error: "no such table: geometry_columns"
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "C:\Python27\Lib\site-packages\django\core\management\__init__.py", line 385, in execute_from_command_line
utility.execute()
File "C:\Python27\Lib\site-packages\django\core\management\__init__.py", line 377, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Python27\Lib\site-packages\django\core\management\base.py", line 288, in run_from_argv
self.execute(*args, **options.__dict__)
File "C:\Python27\Lib\site-packages\django\core\management\base.py", line 338, in execute
output = self.handle(*args, **options)
File "C:\Python27\Lib\site-packages\django\core\management\commands\migrate.py", line 160, in handle
executor.migrate(targets, plan, fake=options.get("fake", False))
File "C:\Python27\Lib\site-packages\django\db\migrations\executor.py", line 63, in migrate
self.apply_migration(migration, fake=fake)
File "C:\Python27\Lib\site-packages\django\db\migrations\executor.py", line 97, in apply_migration
migration.apply(project_state, schema_editor)
File "C:\Python27\Lib\site-packages\django\db\migrations\migration.py", line 107, in apply
operation.database_forwards(self.app_label, schema_editor, project_state, new_state)
File "C:\Python27\Lib\site-packages\django\db\migrations\operations\fields.py", line 37, in database_forwards
field,
File "C:\Python27\Lib\site-packages\django\contrib\gis\db\backends\spatialite\schema.py", line 102, in add_field
super(SpatialiteSchemaEditor, self).add_field(model, field)
File "C:\Python27\Lib\site-packages\django\db\backends\sqlite3\schema.py", line 160, in add_field
self._remake_table(model, create_fields=[field])
File "C:\Python27\Lib\site-packages\django\db\backends\sqlite3\schema.py", line 128, in _remake_table
self.quote_name(model._meta.db_table),
File "C:\Python27\Lib\site-packages\django\db\backends\schema.py", line 98, in execute
cursor.execute(sql, params)
File "C:\Python27\Lib\site-packages\django\db\backends\utils.py", line 81, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "C:\Python27\Lib\site-packages\django\db\backends\utils.py", line 65, in execute
return self.cursor.execute(sql, params)
File "C:\Python27\Lib\site-packages\django\db\utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "C:\Python27\Lib\site-packages\django\db\backends\utils.py", line 65, in execute
return self.cursor.execute(sql, params)
File "C:\Python27\Lib\site-packages\django\db\backends\sqlite3\base.py", line 485, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: table cities_city__new has no column named location
Related
while running server its working fine; website working fine; everything is fine. but when I am trying migrate something I am getting error as below. even if I am adding new model and trying to do makemigrations and migrate everything happening and working fine, but migrate shows error as below. couldn't find out the problem.
Operations to perform:
Apply all migrations: admin, auth, contenttypes, pmp, sessions
Running migrations:
Applying pmp.0035_alter_tests_reports_visit...Traceback (most recent call last):
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\backends\utils.py", line 89, in _execute
return self.cursor.execute(sql, params)
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\backends\sqlite3\base.py", line 477, in execute
return Database.Cursor.execute(self, query, params)
sqlite3.IntegrityError: UNIQUE constraint failed: new__pmp_tests_reports.visit_id
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "E:\py\patient_management_project\manage.py", line 22, in <module>
main()
File "E:\py\patient_management_project\manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\core\management\__init__.py", line 446, in execute_from_command_line
utility.execute()
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\core\management\__init__.py", line 440, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\core\management\base.py", line 414, in run_from_argv
self.execute(*args, **cmd_options)
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\core\management\base.py", line 460, in execute
output = self.handle(*args, **options)
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\core\management\base.py", line 98, in wrapped
res = handle_func(*args, **kwargs)
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\core\management\commands\migrate.py", line 290, in handle
post_migrate_state = executor.migrate(
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\migrations\executor.py", line 131, in migrate
state = self._migrate_all_forwards(
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\migrations\executor.py", line 163, in _migrate_all_forwards
state = self.apply_migration(
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\migrations\executor.py", line 248, in apply_migration
state = migration.apply(state, schema_editor)
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\migrations\migration.py", line 131, in apply
operation.database_forwards(
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\migrations\operations\fields.py", line 235, in database_forwards
schema_editor.alter_field(from_model, from_field, to_field)
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\backends\sqlite3\schema.py", line 172, in alter_field
super().alter_field(model, old_field, new_field, strict=strict)
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\backends\base\schema.py", line 747, in alter_field
self._alter_field(
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\backends\sqlite3\schema.py", line 432, in _alter_field
self._remake_table(model, alter_field=(old_field, new_field))
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\backends\sqlite3\schema.py", line 326, in _remake_table
self.execute(
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\backends\base\schema.py", line 192, in execute
cursor.execute(sql, params)
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\backends\utils.py", line 103, in execute
return super().execute(sql, params)
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\backends\utils.py", line 67, in execute
return self._execute_with_wrappers(
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\backends\utils.py", line 80, in _execute_with_wrappers
return executor(sql, params, many, context)
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\backends\utils.py", line 84, in _execute
with self.db.wrap_database_errors:
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\utils.py", line 91, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\backends\utils.py", line 89, in _execute
return self.cursor.execute(sql, params)
File "C:\Users\Lenovo\AppData\Local\Programs\Python\Python310\lib\site-packages\django\db\backends\sqlite3\base.py", line 477, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.IntegrityError: UNIQUE constraint failed: new__pmp_tests_reports.visit_id
I'm setting up a database in django, while trying to flush the database i get the following error:
You have requested a flush of the database.
This will IRREVERSIBLY DESTROY all data currently in the "/home/luc/projects/PySorge/API/db.sqlite3" database,
and return each table to an empty state.
Are you sure you want to do this?
Type yes to continue, or no to cancel: yes
Traceback (most recent call last):
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 413, in execute
return Database.Cursor.execute(self, query, params)
sqlite3.IntegrityError: NOT NULL constraint failed: django_content_type.name
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/luc/projects/PySorge/API/manage.py", line 22, in <module>
main()
File "/home/luc/projects/PySorge/API/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/home/luc/.local/lib/python3.9/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
utility.execute()
File "/home/luc/.local/lib/python3.9/site-packages/django/core/management/__init__.py", line 395, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/luc/.local/lib/python3.9/site-packages/django/core/management/base.py", line 330, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/luc/.local/lib/python3.9/site-packages/django/core/management/base.py", line 371, in execute
output = self.handle(*args, **options)
File "/home/luc/.local/lib/python3.9/site-packages/django/core/management/commands/flush.py", line 80, in handle
emit_post_migrate_signal(verbosity, interactive, database)
File "/home/luc/.local/lib/python3.9/site-packages/django/core/management/sql.py", line 48, in emit_post_migrate_signal
models.signals.post_migrate.send(
File "/home/luc/.local/lib/python3.9/site-packages/django/dispatch/dispatcher.py", line 177, in send
return [
File "/home/luc/.local/lib/python3.9/site-packages/django/dispatch/dispatcher.py", line 178, in <listcomp>
(receiver, receiver(signal=self, sender=sender, **named))
File "/home/luc/.local/lib/python3.9/site-packages/django/contrib/auth/management/__init__.py", line 42, in create_permissions
create_contenttypes(app_config, verbosity=verbosity, interactive=interactive, using=using, apps=apps, **kwargs)
File "/home/luc/.local/lib/python3.9/site-packages/django/contrib/contenttypes/management/__init__.py", line 132, in create_contenttypes
ContentType.objects.using(using).bulk_create(cts)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/models/query.py", line 506, in bulk_create
returned_columns = self._batched_insert(
File "/home/luc/.local/lib/python3.9/site-packages/django/db/models/query.py", line 1277, in _batched_insert
self._insert(item, fields=fields, using=self.db, ignore_conflicts=ignore_conflicts)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/models/query.py", line 1254, in _insert
return query.get_compiler(using=using).execute_sql(returning_fields)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/models/sql/compiler.py", line 1397, in execute_sql
cursor.execute(sql, params)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/utils.py", line 98, in execute
return super().execute(sql, params)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/utils.py", line 66, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/utils.py", line 75, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/utils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 413, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.IntegrityError: NOT NULL constraint failed: django_content_type.name
While trying to migrate, the following error occured:
Operations to perform:
Apply all migrations: admin, api, auth, contenttypes, sessions
Running migrations:
Applying api.0001_initial...Traceback (most recent call last):
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/utils.py", line 82, in _execute
return self.cursor.execute(sql)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 411, in execute
return Database.Cursor.execute(self, query)
sqlite3.OperationalError: duplicate column name: ID
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/luc/projects/PySorge/API/manage.py", line 22, in <module>
main()
File "/home/luc/projects/PySorge/API/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/home/luc/.local/lib/python3.9/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
utility.execute()
File "/home/luc/.local/lib/python3.9/site-packages/django/core/management/__init__.py", line 395, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/luc/.local/lib/python3.9/site-packages/django/core/management/base.py", line 330, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/luc/.local/lib/python3.9/site-packages/django/core/management/base.py", line 371, in execute
output = self.handle(*args, **options)
File "/home/luc/.local/lib/python3.9/site-packages/django/core/management/base.py", line 85, in wrapped
res = handle_func(*args, **kwargs)
File "/home/luc/.local/lib/python3.9/site-packages/django/core/management/commands/migrate.py", line 243, in handle
post_migrate_state = executor.migrate(
File "/home/luc/.local/lib/python3.9/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/luc/.local/lib/python3.9/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/luc/.local/lib/python3.9/site-packages/django/db/migrations/executor.py", line 227, in apply_migration
state = migration.apply(state, schema_editor)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/migrations/migration.py", line 124, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/migrations/operations/models.py", line 92, in database_forwards
schema_editor.create_model(model)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/base/schema.py", line 324, in create_model
self.execute(sql, params or None)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/base/schema.py", line 142, in execute
cursor.execute(sql, params)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/utils.py", line 98, in execute
return super().execute(sql, params)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/utils.py", line 66, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/utils.py", line 75, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/utils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/utils.py", line 82, in _execute
return self.cursor.execute(sql)
File "/home/luc/.local/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 411, in execute
return Database.Cursor.execute(self, query)
django.db.utils.OperationalError: duplicate column name: ID
I'm using django version 3.1.6. I'm not really sure how to fix this as I'm not very familiar with databases. Seems like the error is caused by a duplicate field id - my current database setup does have a field named ID.
My recommendation, although certainly not the best way forward, would be to delete the database (delete the actual sqlite3 file in your project) then delete all of your previous migrations, and then try making migrations again.
I had a very old Django site (still had South migrations in tree!) that had been ticking along on a SQLite database forever. At some point Django removed the name column from the django_content_types table. The model uses a property now based on the reflected model class. I've no idea why this hadn't be caught by a Django migration, but I've been known to fake migrations in the blood mist of getting something to run, no-matter-what.
I just dropped the column in ./manage.py dbshell:
ALTER TABLE django_content_type DROP COLUMN name;
And migrations worked again. No ill effects felt. All my old contenttypes are in there, everything still works.
python manage.py reset_db
This will delete all tables. It also helps to delete all migration files in the project if you want a complete wipeout
I really don't know where to start with this error message so wondering if anyone's seen similar before? The weird thing is that my CSV import itself actually works fine, but I am a tad concerned by the error messages:
Applying csvimport.0002_test_models...Traceback (most recent call last):
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
psycopg2.ProgrammingError: syntax error at or near "csvtests_country"
LINE 1: ...CONSTRAINT "csvtests_item_country_id_5f8b06b9_fk_"csvtests_c...
^
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
utility.execute()
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/core/management/__init__.py", line 356, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/core/management/base.py", line 283, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/core/management/base.py", line 330, in execute
output = self.handle(*args, **options)
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/core/management/commands/migrate.py", line 204, in handle
fake_initial=fake_initial,
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/db/migrations/executor.py", line 115, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/db/migrations/executor.py", line 145, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/db/migrations/executor.py", line 244, in apply_migration
state = migration.apply(state, schema_editor)
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/db/backends/base/schema.py", line 93, in __exit__
self.execute(sql)
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/db/backends/base/schema.py", line 120, in execute
cursor.execute(sql, params)
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/db/backends/utils.py", line 80, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/utils/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/home/mikey/.virtualenvs/fanta/lib/python3.5/site-packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: syntax error at or near "csvtests_country"
LINE 1: ...CONSTRAINT "csvtests_item_country_id_5f8b06b9_fk_"csvtests_c...
^
I can't even tell from the error message what potential .py files that may be the source. My models.py seems fine, settings seems fine. Any ideas?
I am getting a migrate command error --
django.db.utils.OperationalError: (1170, "BLOB/TEXT column 'module_name' used in key specification without a key length")
The model is
class Coupling(models.Model):
coupling_name = models.CharField(max_length=150, blank=False, default=True, unique=True)
module_name = models.TextField(max_length=255)
There is a key length though.
Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\core\management\__init__.py", line 367, in execute_from_command_line
utility.execute()
File "C:\virtualenvs\ciasenv\lib\site-packages\django\core\management\__init__.py", line 359, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\core\management\base.py", line 294, in run_from_argv
self.execute(*args, **cmd_options)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\core\management\base.py", line 345, in execute
output = self.handle(*args, **options)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\core\management\commands\migrate.py", line 204, in handle
fake_initial=fake_initial,
File "C:\virtualenvs\ciasenv\lib\site-packages\django\db\migrations\executor.py", line 115, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\db\migrations\executor.py", line 145, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\db\migrations\executor.py", line 244, in apply_migration
state = migration.apply(state, schema_editor)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\db\migrations\migration.py", line 129, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\db\migrations\operations\fields.py", line 204, in database_forwards
schema_editor.alter_field(from_model, from_field, to_field)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\db\backends\base\schema.py", line 495, in alter_field
old_db_params, new_db_params, strict)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\db\backends\base\schema.py", line 678, in _alter_field
self.execute(self._create_unique_sql(model, [new_field.column]))
File "C:\virtualenvs\ciasenv\lib\site-packages\django\db\backends\base\schema.py", line 112, in execute
cursor.execute(sql, params)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\db\backends\utils.py", line 79, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\db\backends\utils.py", line 64, in execute
return self.cursor.execute(sql, params)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\db\utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\utils\six.py", line 685, in reraise
raise value.with_traceback(tb)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\db\backends\utils.py", line 64, in execute
return self.cursor.execute(sql, params)
File "C:\virtualenvs\ciasenv\lib\site-packages\django\db\backends\mysql\base.py", line 112, in execute
return self.cursor.execute(query, args)
File "C:\virtualenvs\ciasenv\lib\site-packages\MySQLdb\cursors.py", line 250, in execute
self.errorhandler(self, exc, value)
File "C:\virtualenvs\ciasenv\lib\site-packages\MySQLdb\connections.py", line 50, in defaulterrorhandler
raise errorvalue
File "C:\virtualenvs\ciasenv\lib\site-packages\MySQLdb\cursors.py", line 247, in execute
res = self._query(query)
File "C:\virtualenvs\ciasenv\lib\site-packages\MySQLdb\cursors.py", line 411, in _query
rowcount = self._do_query(q)
File "C:\virtualenvs\ciasenv\lib\site-packages\MySQLdb\cursors.py", line 374, in _do_query
db.query(q)
File "C:\virtualenvs\ciasenv\lib\site-packages\MySQLdb\connections.py", line 292, in query
_mysql.connection.query(self, query)
django.db.utils.OperationalError: (1061, "Duplicate key name 'accounts_coupling_coupling_name_175325e1_uniq'")
Any help is highly appreciated. Thanks in advance.
The first error might be because you tried to set unique=True for the TextField. This is not possible for MySQL, as noted in the docs.
The second error is because you are trying to create an index that already exists. This could be because you already ran the migration and it failed part way through. MySQL does not run schema changes in a transaction, so changes aren't rolled back if they fail. You could try dropping the index manually, or, if this is a new project, it might be easier to drop the database and start again.
I'm trying to set up django-notifications in my app. I'm following the instructions to install it, which are pretty straight-forward: https://github.com/brantyoung/django-notifications#installation
When I run manage.py migrate notifications I get:
django.db.utils.ProgrammingError: (1146, "Table '{{database}}.notifications_notification' doesn't exist")
I'm at a loss.
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
utility.execute()
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/django/core/management/__init__.py", line 392, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/django/core/management/base.py", line 242, in run_from_argv
self.execute(*args, **options.__dict__)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/django/core/management/base.py", line 285, in execute
output = self.handle(*args, **options)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/south/management/commands/migrate.py", line 111, in handle
ignore_ghosts = ignore_ghosts,
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/south/migration/__init__.py", line 220, in migrate_app
success = migrator.migrate_many(target, workplan, database)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/south/migration/migrators.py", line 230, in migrate_many
result = migrator.__class__.migrate_many(migrator, target, migrations, database)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/south/migration/migrators.py", line 305, in migrate_many
result = self.migrate(migration, database)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/south/migration/migrators.py", line 134, in migrate
result = self.run(migration, database)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/south/migration/migrators.py", line 115, in run
return self.run_migration(migration, database)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/south/migration/migrators.py", line 85, in run_migration
migration_function()
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/south/migration/migrators.py", line 61, in <lambda>
return (lambda: direction(orm))
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/notifications/migrations/0002_auto__add_field_notification_data.py", line 14, in forwards
keep_default=False)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/south/db/generic.py", line 47, in _cache_clear
return func(self, table, *args, **opts)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/south/db/generic.py", line 418, in add_column
self.execute(sql)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/south/db/generic.py", line 282, in execute
cursor.execute(sql, params)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/django/db/backends/util.py", line 69, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/django/db/backends/util.py", line 53, in execute
return self.cursor.execute(sql, params)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/django/db/utils.py", line 99, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/django/db/backends/util.py", line 53, in execute
return self.cursor.execute(sql, params)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/django/db/backends/mysql/base.py", line 124, in execute
return self.cursor.execute(query, args)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/MySQLdb/cursors.py", line 201, in execute
self.errorhandler(self, exc, value)
File "/Users/nicholsp/.virtualenvs/ownership/lib/python2.7/site-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler
raise errorclass, errorvalue
django.db.utils.ProgrammingError: (1146, "Table 'ownershipdb.notifications_notification' doesn't exist")
You forget to run syncdb before migrating data. The table doesn't exists because it's syncdb that created it, not the migration.
Reference: http://south.readthedocs.org/en/latest/tutorial/part1.html
(If this fails complaining that south_migrationhistory does not exist, you forgot to run syncdb after you installed South.)