python – Django – 没有这样的表异常
作者:互联网
在Django中,我在models.py中添加了一些模型.在manage.py makemigrations之后,manage.py migrate引发了以下异常:
django.db.utils.OperationalError: no such table: auth_test_usertranslatorprofile
所以我删除了所有旧的迁移并运行makemigrations并再次迁移,这似乎有效.
不幸的是,我注意到它没有帮助,因为当我尝试点击用户转换器配置文件的用户客户配置文件时,它会引发异常:
环境:
Request Method: GET
Request URL: http://127.0.0.1:8000/admin/auth_test/usertranslatorprofile/
Django Version: 1.8.7
Python Version: 2.7.10
Installed Applications:
('django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'auth_test')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
'django.middleware.security.SecurityMiddleware')
Traceback:
File "C:\Python27\lib\site-packages\django\core\handlers\base.py" in get_response
132. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Python27\lib\site-packages\django\contrib\admin\options.py" in wrapper
618. return self.admin_site.admin_view(view)(*args, **kwargs)
File "C:\Python27\lib\site-packages\django\utils\decorators.py" in _wrapped_view
110. response = view_func(request, *args, **kwargs)
File "C:\Python27\lib\site-packages\django\views\decorators\cache.py" in _wrapped_view_func
57. response = view_func(request, *args, **kwargs)
File "C:\Python27\lib\site-packages\django\contrib\admin\sites.py" in inner
233. return view(request, *args, **kwargs)
File "C:\Python27\lib\site-packages\django\utils\decorators.py" in _wrapper
34. return bound_func(*args, **kwargs)
File "C:\Python27\lib\site-packages\django\utils\decorators.py" in _wrapped_view
110. response = view_func(request, *args, **kwargs)
File "C:\Python27\lib\site-packages\django\utils\decorators.py" in bound_func
30. return func.__get__(self, type(self))(*args2, **kwargs2)
File "C:\Python27\lib\site-packages\django\contrib\admin\options.py" in changelist_view
1550. self.list_max_show_all, self.list_editable, self)
File "C:\Python27\lib\site-packages\django\contrib\admin\views\main.py" in __init__
82. self.get_results(request)
File "C:\Python27\lib\site-packages\django\contrib\admin\views\main.py" in get_results
177. result_count = paginator.count
File "C:\Python27\lib\site-packages\django\core\paginator.py" in _get_count
72. self._count = self.object_list.count()
File "C:\Python27\lib\site-packages\django\db\models\query.py" in count
318. return self.query.get_count(using=self.db)
File "C:\Python27\lib\site-packages\django\db\models\sql\query.py" in get_count
466. number = obj.get_aggregation(using, ['__count'])['__count']
File "C:\Python27\lib\site-packages\django\db\models\sql\query.py" in get_aggregation
447. result = compiler.execute_sql(SINGLE)
File "C:\Python27\lib\site-packages\django\db\models\sql\compiler.py" in execute_sql
840. cursor.execute(sql, params)
File "C:\Python27\lib\site-packages\django\db\backends\utils.py" in execute
79. return super(CursorDebugWrapper, self).execute(sql, params)
File "C:\Python27\lib\site-packages\django\db\backends\utils.py" in execute
64. return self.cursor.execute(sql, params)
File "C:\Python27\lib\site-packages\django\db\utils.py" in __exit__
98. six.reraise(dj_exc_type, dj_exc_value, traceback)
File "C:\Python27\lib\site-packages\django\db\backends\utils.py" in execute
64. return self.cursor.execute(sql, params)
File "C:\Python27\lib\site-packages\django\db\backends\sqlite3\base.py" in execute
318. return Database.Cursor.execute(self, query, params)
Exception Type: OperationalError at /admin/auth_test/usertranslatorprofile/
Exception Value: no such table: auth_test_usertranslatorprofile
我正在附上我的文件:
MODELS.PY:
from django.db import models
from django.contrib.auth.models import User
class Language(models.Model):
shortcut = models.CharField(max_length=6)
name = models.CharField(max_length=50)
price_per_sign = models.FloatField()
class UserTranslatorProfile(models.Model):
user = models.OneToOneField(User)
languages = models.ManyToManyField(Language)
price_per_word = models.FloatField()
class UserCustomerProfile(models.Model):
user = models.OneToOneField(User)
ADMIN.PY:
from django import forms
from .models import Language
from django.contrib.auth.models import User
from django.contrib.auth.forms import UserCreationForm
class FreelancerRegistrationForm(forms.Form):
language = forms.ModelChoiceField(queryset=Language.objects.all().order_by('shortcut'))
你知道问题出在哪里吗?
谢谢
解决方法:
我用这些步骤解决了同样的问题:
>删除项目目录中的数据库(在我的例子中为db.sqlite3)
>从项目子目录下的__pycache__文件夹中删除所有内容
>对于您尝试修复的应用程序,请转到该文件夹并清除迁移和__pycache__目录
如果您确定已清除所有上述文件,请运行:
python manage.py makemigrations
python manage.py migrate
我希望这有帮助.
标签:python,sqlite,django,migrate,makemigrations 来源: https://codeday.me/bug/20191005/1855949.html