最近我遇到了一个让我抓狂的问题，在网上找不到任何解决方案。我不知道问题是什么时候产生的，或者我做了什么导致了这个问题，但现在每次我想在Django应用程序中运行测试时，这个错误都会出现:
Traceback (most recent call last):
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/db/backends/utils.py", line 89, in _execute
return self.cursor.execute(sql, params)
psycopg2.errors.UndefinedTable: relation "auth_user" does not exist
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/mohammad/Projects/IP_Camera/manage.py", line 22, in <module>
main()
File "/home/mohammad/Projects/IP_Camera/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/core/management/__init__.py", line 446, in execute_from_command_line
utility.execute()
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/core/management/__init__.py", line 440, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/core/management/commands/test.py", line 24, in run_from_argv
super().run_from_argv(argv)
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/core/management/base.py", line 414, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/core/management/base.py", line 460, in execute
output = self.handle(*args, **options)
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/core/management/commands/test.py", line 68, in handle
failures = test_runner.run_tests(test_labels)
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/test/runner.py", line 1000, in run_tests
old_config = self.setup_databases(
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/test/runner.py", line 898, in setup_databases
return _setup_databases(
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/test/utils.py", line 220, in setup_databases
connection.creation.create_test_db(
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/db/backends/base/creation.py", line 79, in create_test_db
call_command(
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/core/management/__init__.py", line 198, in call_command
return command.execute(*args, **defaults)
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/core/management/base.py", line 460, in execute
output = self.handle(*args, **options)
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/core/management/base.py", line 98, in wrapped
res = handle_func(*args, **kwargs)
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/core/management/commands/migrate.py", line 255, in handle
self.sync_apps(connection, executor.loader.unmigrated_apps)
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/core/management/commands/migrate.py", line 402, in sync_apps
with connection.schema_editor() as editor:
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/db/backends/base/schema.py", line 157, in __exit__
self.execute(sql)
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/db/backends/base/schema.py", line 192, in execute
cursor.execute(sql, params)
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/db/backends/utils.py", line 67, in execute
return self._execute_with_wrappers(
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/db/backends/utils.py", line 80, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/db/backends/utils.py", line 84, in _execute
with self.db.wrap_database_errors:
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/db/utils.py", line 91, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/home/mohammad/Projects/IP_Camera/venv/lib/python3.10/site-packages/django/db/backends/utils.py", line 89, in _execute
return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: relation "auth_user" does not exist
有人知道这里发生了什么吗?提前谢谢。
<标题>答案是正确的。我注释了进一步的信息和细节。见问题。
这似乎发生在你的模型和运行单元测试时迁移文件。
确保你的应用程序中有migrations/__init__.py和migrate。