python - 在 django 中进行迁移错误:“没有这样的表”
问题描述
当我尝试进行迁移时:python manage.py makemigrations
出现以下错误:django.db.utils.OperationalError: no such table: blog_category
Traceback (most recent call last):
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django \db\backends\sqlite3\base.py", line 383, in execute
return Database.Cursor.execute(self, query, params)
sqlite3.OperationalError: no such table: blog_category
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "manage.py", line 15, in <module>
execute_from_command_line(sys.argv)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django \core\management\__init__.py", line 381, in execute_from_command_line
utility.execute()
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\management\__init__.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\management\base.py", line 323, in run_from_argv
self.execute(*args, **cmd_options)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\management\base.py", line 361, in execute
self.check()
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\management\base.py", line 390, in check
include_deployment_checks=include_deployment_checks,
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\management\base.py", line 377, in _run_checks
return checks.run_checks(**kwargs)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\checks\registry.py", line 72, in run_checks
new_errors = check(app_configs=app_configs)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\checks\urls.py", line 40, in check_url_namespaces_unique
all_namespaces = _load_all_namespaces(resolver)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\checks\urls.py", line 57, in _load_all_namespaces
url_patterns = getattr(resolver, 'url_patterns', [])
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\utils\functional.py", line 80, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\urls\resolvers.py", line 571, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\utils\functional.py", line 80, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\urls\resolvers.py", line 564, in urlconf_module
return import_module(self.urlconf_name)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\importlib\__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "C:\xampp\htdocs\Django project\blooper\Bona-Blog-master\bona_blog\urls.py", line 27, in <module>
path('', include('blog.urls', namespace='blog')), # Urls for article app.
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\urls\conf.py", line 34, in include
urlconf_module = import_module(urlconf_module)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\importlib\__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "C:\xampp\htdocs\Django project\blooper\Bona-Blog-master\blog\urls.py", line 5, in <module>
from blog.views.blog.article_views import (
File "C:\xampp\htdocs\Django project\blooper\Bona-Blog-master\blog\views\blog\article_views.py", line 25, in <module>
from blog.forms.blog.article_forms import (
File "C:\xampp\htdocs\Django project\blooper\Bona-Blog-master\blog\forms\blog\article_forms.py", line 16, in <module>
class ArticleCreateForm(forms.ModelForm):
File "C:\xampp\htdocs\Django project\blooper\Bona-Blog-master\blog\forms\blog\article_forms.py", line 18, in ArticleCreateForm
class Meta:
File "C:\xampp\htdocs\Django project\blooper\Bona-Blog-master\blog\forms\blog\article_forms.py", line 47, in Meta
"data-live-search": "true"
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\forms\widgets.py", line 562, in __init__
self.choices = list(choices)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\query.py", line 274, in __iter__
self._fetch_all()
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\query.py", line 1242, in _fetch_all
self._result_cache = list(self._iterable_class(self))
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\query.py", line 55, in __iter__
results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\sql\compiler.py", line 1097, in execute_sql
cursor.execute(sql, params)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\utils.py", line 99, in execute
return super().execute(sql, params)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\utils.py", line 67, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\utils.py", line 76, in _execute_with_wrappers
return executor(sql, params, many, context)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\utils.py", line 89, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "C:\Users\injemam\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\backends\sqlite3\base.py", line 383, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: no such table: blog_category
请帮助如何消除此错误? 我是 Django 的新手,我从 Github https://github.com/Williano/Bona-Blog克隆了这个项目
使用 Django-2.2
解决方案
显然,
要么您手动更改了您的数据库表(例如通过数据库接口)
您缺少一个或多个必需的迁移文件。
当您在开发环境中时,我会建议
- 删除数据库
- 重新创建数据库
- 然后
python manage.py migrate
再一次
推荐阅读
- css - 使用顺风将内置动画旋转应用于悬停状态
- python - Django 500 错误页面不加载 CSS 文件
- kurento - 通过 kurento 以块或段的形式记录流
- git - 詹金斯-Git-找不到存储库
- php - Wordpress 过滤 Woocommerce 结构化数据
- java - 有没有弹簧启动但只有弹簧的 cron 调度程序
- apache - SaaS应用程序自动生成虚拟主机
- elasticsearch - 我们如何在 Elasticserach+fluentbit+kibana 中进行警报?
- typescript - @admin-bro/nestjs 与 @admin-bro/sequelize 和 mysql ?出现错误 NoResourceAdapterError
- machine-learning - 如何使用带注意力的 Seq2Seq 编码器-解码器模型进行多步预测