访问管理网站中的模型时出现问题

Question

我已经创建了Profile模型，它在Django的管理网站上运行良好，显然，我试图创建一个非常复杂的模型，但我不断出错，无论如何，我决定简化流程，并创建了一个非常简单的模型。

型号.py

from django.db import models
from django.conf import settings
#from django_countries.fields import CountryField
#from phone_field import PhoneField
class Profile(models.Model):
user = models.OneToOneField(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
email = models.EmailField(blank=True,null=True)
role = models.TextField(blank=True)
location = models.TextField(blank=True)
photo = models.ImageField(upload_to='users/%Y/%m/%d', blank=True)
def __str__(self):
return f'Profile for user {self.user.username}'
class Client(models.Model):
firstname = models.CharField(blank=True, max_length=30)

def __str__(self):
return f'{self.firstname}'

我运行了python manage.py makemigrations和python manage.py migrate，代码运行良好，我还确保删除了以前的所有迁移，所以我在迁移中成功地创建了0001_initial.py文件。

我决定将我的新模型包含在admin.py文件中，这样我就可以通过Django的用户界面与模型进行交互

from django.contrib import admin
from .models import Profile, Client
@admin.register(Profile)
class ProfileAdmin(admin.ModelAdmin):
list_display = ['user', 'photo','role']
@admin.register(Client)
class Client(admin.ModelAdmin):
list_display = ['firstname']
#list_display = ['firstname', 'lastname','position','country','email','phone']

这就是问题的开始，我可以成功地看到Clients模型是在管理部分创建的，但当我单击该模型时，我得到了这个错误django.db.utils.OperationalError: no such table: account_client

Traceback (most recent call last):
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangocorehandlersexception.py", line 47, in inner
response = get_response(request)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangocorehandlersbase.py", line 181, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangocontribadminoptions.py", line 616, in wrapper
return self.admin_site.admin_view(view)(*args, **kwargs)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangoutilsdecorators.py", line 130, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangoviewsdecoratorscache.py", line 44, in _wrapped_view_func
response = view_func(request, *args, **kwargs)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangocontribadminsites.py", line 232, in inner
return view(request, *args, **kwargs)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangoutilsdecorators.py", line 43, in _wrapper
return bound_method(*args, **kwargs)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangoutilsdecorators.py", line 130, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangocontribadminoptions.py", line 1697, in changelist_view
cl = self.get_changelist_instance(request)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangocontribadminoptions.py", line 736, in get_changelist_instance
return ChangeList(
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangocontribadminviewsmain.py", line 100, in __init__
self.get_results(request)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangocontribadminviewsmain.py", line 235, in get_results
result_count = paginator.count
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangoutilsfunctional.py", line 48, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangocorepaginator.py", line 97, in count
return c()
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangodbmodelsquery.py", line 412, in count
return self.query.get_count(using=self.db)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangodbmodelssqlquery.py", line 519, in get_count
number = obj.get_aggregation(using, ['__count'])['__count']
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangodbmodelssqlquery.py", line 504, in get_aggregation
result = compiler.execute_sql(SINGLE)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangodbmodelssqlcompiler.py", line 1175, in execute_sql
cursor.execute(sql, params)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangodbbackendsutils.py", line 98, in execute
return super().execute(sql, params)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangodbbackendsutils.py", line 66, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangodbbackendsutils.py", line 75, in _execute_with_wrappers
return executor(sql, params, many, context)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangodbbackendsutils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangodbutils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangodbbackendsutils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "C:UsersfcolinaAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesdjangodbbackendssqlite3base.py", line 423, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: no such table: account_client

任何关于如何解决这个问题的想法都欢迎

Answer 1

stacktrace说明了一切，而且您的应用程序似乎找不到表account_client。迁移时一定出了问题。如果可能的话，从一个新的DB开始，或者至少删除所有表。然后删除所有迁移文件并重新执行makemigrations命令。之后，你就可以出发了！祝你好运

Answer 2

尝试运行

python manage.py migrate --run-syncdb

运行正常迁移

python manage.py makemigrations <your-app-name>
python manage.py migrate <your-app-name>

如果这不起作用，请尝试将其添加到每个模型中：

class Meta:
app_label = '<your-app-name>'

运行正常迁移

python manage.py makemigrations <your-app-name>
python manage.py migrate <your-app-name>

如果仍然存在，则：

python manage.py makemigrations <your-app-name>
python manage.py migrate <your-app-name> --fake

如果所有选项都不起作用，那么您有两个选项：

• 选项1

1. 手动检查数据库中是否存在表
2. 如果表不存在，请手动在数据库中创建该表

• 选项2

1. 如果它的调试数据库没有重要信息，请删除它，删除迁移并再次运行迁移