我只是在迁移到我的 django 项目时遇到了错误。在我已经开发了 50% 的项目中,我使用所有者模型来代表商店的所有者,然后我使用用户模型进行登录和注册。所以我尝试在我的所有者模型中使用用户模型,这样我就可以通过附加字段有效地利用这两个模型。 我尝试使用 onetoone 字段在所有者模型中扩展用户模型。这样做之后,我无法进行迁移,所以我删除了所有迁移文件,但之后它在进行迁移时开始出现此错误:-
py manage.py makemigrations
Traceback (most recent call last):
File "manage.py", line 21, in <module>
main()
File "manage.py", line 17, in main
execute_from_command_line(sys.argv)
File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\core\management\__init__.py", line 401, in execute_from_command_line
utility.execute()
File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\core\management\__init__.py", line 395, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\core\management\base.py", line 328, in run_from_argv
self.execute(*args, **cmd_options)
File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\core\management\base.py", line 369, in execute
output = self.handle(*args, **options)
File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\core\management\base.py", line 83, in wrapped
res = handle_func(*args, **kwargs)
File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\core\management\commands\makemigrations.py", line 87, in handle
loader = MigrationLoader(None, ignore_no_migrations=True)
File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\migrations\loader.py", line 49, in __init__
self.build_graph()
File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\migrations\loader.py", line 274, in build_graph
raise exc
File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\migrations\loader.py", line 248, in build_graph
self.graph.validate_consistency()
File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\migrations\graph.py", line 195, in validate_consistency
[n.raise_error() for n in self.node_map.values() if isinstance(n, DummyNode)]
File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\migrations\graph.py", line 195, in <listcomp>
[n.raise_error() for n in self.node_map.values() if isinstance(n, DummyNode)]
File "C:\Users\Mayur\PycharmProjects\StartUp\venv\lib\site-packages\django\db\migrations\graph.py", line 58, in raise_error
raise NodeNotFoundError(self.error_message, self.key, origin=self.origin)
django.db.migrations.exceptions.NodeNotFoundError: Migration listings.0001_initial dependencies reference nonexistent parent node ('owners', '0001_initial')
这是我的所有者模型:-
from django.db import models
from django.contrib.auth.models import User
class Owner(models.Model):
user = models.OneToOneField(User,on_delete=models.CASCADE, default=False)
name=models.CharField(max_length=200)
photo=models.ImageField(upload_to='photos/%Y/%m/%d/')
description=models.TextField(blank=True)
phone=models.CharField(max_length=20)
email=models.CharField(max_length=20)
def __str__(self):
return self.name
我希望这会得到帮助,因为我完全被困在这里,也没有得到如何解决这个问题。