python - Django 无法在 'default' 之外的其他数据库中创建 super 用户

Question

这是错误还是我错了？我正在创建一个 super 用户，但是尽管我的路由器似乎可以工作，但 django 想要一个错误数据库中的表:

设置.py

DATABASES = {
      'intern_db': {
        'ENGINE': 'mysql.connector.django',
        'NAME': 'django_cartons',
            'USER': 'root',
            'PASSWORD' : '',
      },
    'default': {
        'ENGINE': 'mysql.connector.django',
        'NAME': 'cartons',
            'USER': 'root',
            'PASSWORD' : '',
    }
}

DATABASE_ROUTERS = ['web.routers.AuthRouter']

路由器.py

class AuthRouter(object):
      """
      A router to control all database operations on models in the
      auth application.
      """
      def db_for_read(self, model, **hints):
            """
            Attempts to read auth models go to auth.
            """
            print("READ ",model._meta.app_label)
            if model._meta.app_label in ['auth', 'contenttypes', 'admin', 'sessions']:
               print(True)
               return 'intern_db'
            return None

      def db_for_write(self, model, **hints):
            """
            Attempts to write auth models go to auth.
            """
            print("WRITE ",model._meta.app_label)
            if model._meta.app_label in ['auth', 'contenttypes', 'admin', 'sessions']:
               print(True)
               return 'intern_db'
            return None

      def allow_relation(self, obj1, obj2, **hints):
            """
            Allow relations if a model in the auth app is involved.
            """
            print("REL ", obj1._meta.app_label, ' ', obj2._meta.app_label)
            if obj1._meta.app_label in ['auth', 'contenttypes', 'admin', 'sessions'] or \
               obj2._meta.app_label in ['auth', 'contenttypes', 'admin', 'sessions']:
               return True
            return None

      def allow_migrate(self, db, model):
            """
            Make sure the auth app only appears in the 'auth'
            database.
            """
            if db == 'intern_db':
               return (model._meta.app_label in ['auth', 'contenttypes', 'admin', 'sessions'])
            elif model._meta.app_label in ['auth', 'contenttypes', 'admin', 'sessions']:
               return False
            return None

命令:

$> ./manage.py createsuperuser
READ  auth
True
READ  auth
True
Username (leave blank to use 'leo'): admin
Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/mysql/connector/django/base.py", line 115, in _execute_wrapper
    return method(query, args)
  File "/usr/lib/python3.4/site-packages/mysql/connector/cursor.py", line 507, in execute
    self._handle_result(self._connection.cmd_query(stmt))
  File "/usr/lib/python3.4/site-packages/mysql/connector/connection.py", line 722, in cmd_query
    result = self._handle_result(self._send_cmd(ServerCmd.QUERY, query))
  File "/usr/lib/python3.4/site-packages/mysql/connector/connection.py", line 640, in _handle_result
    raise errors.get_exception(packet)
mysql.connector.errors.ProgrammingError: 1146 (42S02): Table 'cartons.auth_user' doesn't exist

如您所见，它会查找不存在的“cartons.auth_user”(它应该是“django_cartons”，别名为“intern_db”)然而，我的路由器被调用并返回正确的结果，因为我们在命令输出中看到“READ auth”和“TRUE”...

有什么想法吗？

Answer 1

问题是系统有些损坏:它尊重某些任务的配置但不尊重其他任务(输出中的第 2 个“TRUE”)但不尊重其他任务并使用默认设置。

这可能是有意为之，但很奇怪(实际上没有什么禁止拥有多个管理数据库，并且允许没有自动暗选择)。

实际上，要在另一个数据库中创建 SU，并且对于这些命令的任何用法，您必须将要创建它的数据库传递给显式:

./manage.py createsuperuser --database=intern_db

注意:数据库名称是配置中的别名。