AttributeError: ‘Manager‘ object has no attribute ‘get_by_natural_key‘

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最新推荐文章于 2022-11-09 16:55:40 发布

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分类专栏： # Python填坑指南 Python编程文章标签： python django natural_key

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在尝试使用Django创建管理员用户时遇到'Manager'对象无'get_by_natural_key'属性的问题，解决方法是在模型中添加UserManager。

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问题描述

E:\SweetYaya\MyProj03>python manage.py createsuperuser
Identifier: 12
Traceback (most recent call last):
  File "manage.py", line 22, in <module>
    main()
  File "manage.py", line 18, in main
    execute_from_command_line(sys.argv)
  File "D:\Program Files\Python36\lib\site-packages\django\core\management\__init__.py", line 419, in execute_from_command_line
    utility.execute()
  File "D:\Program Files\Python36\lib\site-packages\django\core\management\__init__.py", line 413, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "D:\Program Files\Python36\lib\site-packages\django\core\management\base.py", line 354, in run_from_argv
    self.execute(*args, **cmd_options)
  File "D:\Program Files\Python36\lib\site-packages\django\contrib\auth\management\commands\createsuperuser.py", line 79, in execute
    return super().execute(*args, **options)
  File "D:\Program Files\Python36\lib\site-packages\django\core\management\base.py", line 398, in execute
    output = self.handle(*args, **options)
  File "D:\Program Files\Python36\lib\site-packages\django\contrib\auth\management\commands\createsuperuser.py", line 113, in handle
    error_msg = self._validate_username(username, verbose_field_name, database)
  File "D:\Program Files\Python36\lib\site-packages\django\contrib\auth\management\commands\createsuperuser.py", line 234, in _validate_username
    self.UserModel._default_manager.db_manager(database).get_by_natural_key(username)
AttributeError: 'Manager' object has no attribute 'get_by_natural_key'

解决办法

在定义的模型中添加

class SysUsers(models.Model):
    
	...
	# 添加如下代码
    objects = UserManager()
	
	...