Django-没有这样的表异常 [英] Django - no such table exception

问题描述

在Django中，我已经在models.py中添加了一些模型.在manage.py makemigrations之后，manage.py migrate引发了此异常:

In Django, I've added some models into models.py. After manage.py makemigrations, manage.py migrate raised this exception:

django.db.utils.OperationalError: no such table: auth_test_usertranslatorprofile

因此，我删除了所有旧的迁移，然后再次运行makemigrations和migrate，这似乎可行.

So I've removed all old migrations and run makemigrations and migrate again which seemed to work.

不幸的是，我注意到它没有帮助，因为当我尝试单击User translator profiles中的User customer profiles时，它会引发异常:

Unfortunately, I've noticed that it didn't helped because when I try to click on User customer profiles of User translator profiles it raises exception:

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

我正在附加文件:

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'))

您知道问题出在哪里吗? 谢谢

Do you know where is the problem? Thanks

推荐答案

我通过以下步骤解决了相同的问题:

I solved the same problem with these steps :

• 在项目目录中删除数据库(在我的情况下为db.sqlite3)
• 从项目子目录下的__pycache__文件夹中删除所有内容
• 对于您要修复的应用程序，转到文件夹并清除migrations和__pycache__目录

• Delete your database (db.sqlite3 in my case) in your project directory
• Remove everything from __pycache__ folder under your project subdirectory
• For the application you are trying to fix, go to the folder and clear migrations and __pycache__ directories

确定已清除所有上述文件后，运行:

When you are sure you have cleared all the above files, run:

python manage.py makemigrations
python manage.py migrate

我希望这会有所帮助.

这篇关于Django-没有这样的表异常的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！