编程错误：makemigrations时不存在关系“ api_role”

时间：2019-08-02 09:24:55

标签： django django-migrations

设置新的全新虚拟环境和postgres db，甚至不能进行迁移。系统在其他2台PC上运行良好

已安装python3.5

创建了虚拟环境

应用“ requirements.txt”已成功安装

manage.py通过创建的配置识别PostgreSQL服务器

dev_henrique_desktop.py 

from .base import *

DEBUG = True

# Allow specific host headers only
ALLOWED_HOSTS = ['localhost', '127.0.0.1', '.proregatta.com','10.0.2.2']

DATABASES = {
  'default': {
    'ENGINE': 'django.db.backends.postgresql',
    'NAME': 'proregatta',
    'USER': 'postgres',
    'PASSWORD': '*****',
    'HOST': 'localhost',
    'PORT': '5432',
   }
}

py和postgres都在PATH上

虚拟环境已激活

在安装psql时检查了pgAdmin III中超级用户创建的“ postgres”

然后开始问题

已经强制删除数据库

在迁移过程中搜索与“ api_role”相关的问题

在每个答案中，我都很关注。

每个人都说移民。何时无法进行初始移民

删除所有迁移和新的“ makemigrations”

取消安装并安装

问题仍然存在时格式化PC

我至少希望进行最初的移民 注意到其他计算机可能在数据库中缺少此关系，但在迁移中却没有。

Traceback (most recent call last):
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\db\backends\utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
psycopg2.ProgrammingError: relation "api_role" does not exist
LINE 1: ...ECT "auth_group"."name", "auth_group"."name" FROM "api_role"...
                                                             ^


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\core\management\__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\core\management\__init__.py", line 375, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\core\management\base.py", line 316, in run_from_argv
    self.execute(*args, **cmd_options)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\core\management\base.py", line 350, in execute
    self.check()
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\core\management\base.py", line 379, in check
    include_deployment_checks=include_deployment_checks,
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\core\management\commands\migrate.py", line 60, in _run_checks
    issues.extend(super()._run_checks(**kwargs))
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\core\management\base.py", line 366, in _run_checks
    return checks.run_checks(**kwargs)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\core\checks\registry.py", line 71, in run_checks
    new_errors = check(app_configs=app_configs)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\core\checks\urls.py", line 40, in check_url_namespaces_unique
    all_namespaces = _load_all_namespaces(resolver)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\core\checks\urls.py", line 57, in _load_all_namespaces
    url_patterns = getattr(resolver, 'url_patterns', [])
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\utils\functional.py", line 37, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\urls\resolvers.py", line 533, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\utils\functional.py", line 37, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\urls\resolvers.py", line 526, in urlconf_module
    return import_module(self.urlconf_name)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 986, in _gcd_import
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 662, in exec_module
  File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
  File "C:\Users\henri\Documents\Projects\backend-django\proregattaapi\urls.py", line 13, in <module>
    from proregatta_admin import urls as proregatta_admin_urls
  File "C:\Users\henri\Documents\Projects\backend-django\proregatta_admin\urls.py", line 4, in <module>
    from .views import dashboard
  File "C:\Users\henri\Documents\Projects\backend-django\proregatta_admin\views\dashboard.py", line 7, in <module>
    from club_management.forms import SponsorForm
  File "C:\Users\henri\Documents\Projects\backend-django\club_management\forms.py", line 1385, in <module>
    class ManagerForm(forms.Form):
  File "C:\Users\henri\Documents\Projects\backend-django\club_management\forms.py", line 1390, in ManagerForm
    choices=Role.objects.all().order_by('name').values_list('name', 'name')
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\forms\fields.py", line 768, in __init__
    self.choices = choices
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\forms\fields.py", line 785, in _set_choices
    value = list(value)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\db\models\query.py", line 268, in __iter__
    self._fetch_all()
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\db\models\query.py", line 1183, in _fetch_all
    self._result_cache = list(self._iterable_class(self))
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\db\models\query.py", line 138, in __iter__
    return compiler.results_iter(tuple_expected=True, chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\db\models\sql\compiler.py", line 1013, in results_iter
    results = self.execute_sql(MULTI, chunked_fetch=chunked_fetch, chunk_size=chunk_size)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\db\models\sql\compiler.py", line 1061, in execute_sql
    cursor.execute(sql, params)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\db\backends\utils.py", line 100, in execute
    return super().execute(sql, params)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\db\backends\utils.py", line 68, in execute
    return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\db\backends\utils.py", line 77, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\db\backends\utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\db\utils.py", line 89, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "C:\Users\henri\Documents\Projects\backend-django\venv\lib\site-packages\django\db\backends\utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: relation "api_role" does not exist
LINE 1: ...ECT "auth_group"."name", "auth_group"."name" FROM "api_role"...
                                                             ^

2 个答案:

答案 0 :(得分：1)

问题在这里：

File "C:\Users\henri\Documents\Projects\backend-django\club_management\forms.py", line 1390, in ManagerForm
    choices=Role.objects.all().order_by('name').values_list('name', 'name')

当Django加载且数据库没有必填字段时，您进行查询

答案 1 :(得分：0)

我的一位合作者的答案：

有时候，当您在表单本身上查询数据库时，表单在迁移时会遇到问题。

如果您要对数据库中的任何内容进行伪造，请在 init

上执行此操作

/关闭案例

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