getattr(): 属性名必须是字符串？

huangapple
go评论101阅读模式
英文:

getattr(): attribute name must be string?

问题

我的models.py文件：

  1. class Simple(models.Model):
  2.     class Inner(models.TextChoices):
  3.         a = 'small', '小型'
  4.         b = 'medium', '中型'
  5.         c = 'large', '大型'
  6.     
  7.     id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
  8.     name = models.CharField(max_length=200)
  9.     size = models.TextField(choices=Inner.choices, default='medium', db_index=True)

在使用管理员界面添加时出现以下错误：

  1. TypeError at
  2. /admin/main/simple/add/
  3.  
  4. getattr(): attribute name must be string

这是我的命令行中的错误：

  1. Traceback (most recent call last):
  2.   File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
  3.     response = get_response(request)
  4.   File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\core\handlers\base.py", line 179, in _get_response
  5.     response = wrapped_callback(request, *callback_args, **callback_kwargs)
  6.  extra_context)
  7.   File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\utils\decorators.py", line 43, in _wrapper
  8.     return bound_method(*args, **kwargs)
  9.   File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\utils\decorators.py", line 130, in _wrapped_view
  10.     response = view_func(request, *args, **kwargs)
  11.   File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\contrib\admin\options.py", line 1534, in changeform_view
  12.     return self._changeform_view(request, object_id, form_url, extra_context)
  13.   File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\contrib\admin\options.py", line 1573, in _changeform_view
  14.     form_validated = form.is_valid()
  15.   File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\forms\forms.py", line 177, in is_valid
  16.     return self.is_bound and not self.errors
  17.   File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\forms\forms.py", line 172, in errors
  18.     self.full_clean()
  19.   File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\forms\forms.py", line 376, in full_clean
  20.     self._post_clean()
  21.   File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\forms\models.py", line 411, in _post_clean
  22.     self.validate_unique()
  23.   File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\forms\models.py", line 420, in validate_unique
  24.     self.instance.validate_unique(exclude=exclude)
  25.   File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\db\models\base.py", line 1007, in validate_unique
  26.     date_errors = self._perform_date_checks(date_checks)
  27.   File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\db\models\base.py", line 1124, in _perform_date_checks
  28.     date = getattr(self, unique_for)
  29. TypeError: getattr(): attribute name must be string

当我使用 py manage.py shell 创建时没有问题，但当我使用管理员界面时出现错误。

英文:

My models.py file:

  1. class Simple(models.Model):
  2. 	class Inner(models.TextChoices):
  3. 		a = 'small','Small'
  4. 		b = 'medium','Medium'
  5. 		c = 'large','Large'
  6. 	id = models.UUIDField(primary_key=True,default=uuid.uuid4,
  7. 		editable=False)
  8. 	name = models.CharField(max_length=200)
  9.     size = models.TextField(choices=Inner.choices,default='medium',
  10. 		db_index=True)

When use admin interface to add I get:

> TypeError at
> /admin/main/simple/add/
>
> getattr(): attribute name must be string

This is my errors in cmd:

  1.    Traceback (most recent call last):
  2.       File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\core\han
  3.     dlers\exception.py", line 47, in inner
  4.         response = get_response(request)
  5.       File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\core\han
  6.     dlers\base.py", line 179, in _get_response
  7.         response = wrapped_callback(request, *callback_args, **callback_kwargs)
  8.    extra_context)
  9.       File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\utils\de
  10.     corators.py", line 43, in _wrapper
  11.         return bound_method(*args, **kwargs)
  12.       File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\utils\de
  13.     corators.py", line 130, in _wrapped_view
  14.         response = view_func(request, *args, **kwargs)
  15.       File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\contrib\
  16.     admin\options.py", line 1534, in changeform_view
  17.         return self._changeform_view(request, object_id, form_url, extra_context)
  18.       File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\contrib\
  19.     admin\options.py", line 1573, in _changeform_view
  20.         form_validated = form.is_valid()
  21.       File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\forms\fo
  22.     rms.py", line 177, in is_valid
  23.         return self.is_bound and not self.errors
  24.       File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\forms\fo
  25.     rms.py", line 172, in errors
  26.         self.full_clean()
  27.       File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\forms\fo
  28.     rms.py", line 376, in full_clean
  29.         self._post_clean()
  30.       File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\forms\mo
  31.     dels.py", line 411, in _post_clean
  32.         self.validate_unique()
  33.       File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\forms\mo
  34.     dels.py", line 420, in validate_unique
  35.         self.instance.validate_unique(exclude=exclude)
  36.       File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\db\model
  37.     s\base.py", line 1007, in validate_unique
  38.         date_errors = self._perform_date_checks(date_checks)
  39.       File "C:\Users\Desktop\real\django3.1\venv\lib\site-packages\django\db\model
  40.     s\base.py", line 1124, in _perform_date_checks
  41.         date = getattr(self, unique_for)
  42.     TypeError: getattr(): attribute name must be string

When I use py manage.py shell to create there is no problem, but when I use the admin interface I get errros.

答案1

得分: 2

你没有正确设置选项的默认值 default= Inner.b

更改为：

  1. size = models.TextField(choices=Inner.choices, default=Inner.b, db_index=True)
英文:

You are not setting the default value for the choices properly default= Inner.b

change :

  1. size = models.TextField(choices=Inner.choices,default='medium',
  2.         db_index=True)

to :

  1. size = models.TextField(choices=Inner.choices,default= Inner.b,
  2.         db_index=True)

huangapple
  • 本文由 发表于 2023年6月5日 13:38:29
  • 转载请务必保留本文链接：https://go.coder-hub.com/76403723.html
  • django
  • python
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