Django 错误：“class Meta”的属性无效：index_together

Question

我正在开发 Django 项目，并在运行

python manage.py migrate

命令时遇到问题。迁移过程失败并出现以下错误：

Traceback (most recent call last):
  File "C:\Users\dell\Desktop\Django Project GMP\GMB-Django\gmb_project\manage.py", line 22, in <module> 
    main()
  File "C:\Users\dell\Desktop\Django Project GMP\GMB-Django\gmb_project\manage.py", line 18, in main     
    execute_from_command_line(sys.argv)
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\core\management\__init__.py", line 442, in execute_from_command_line
    utility.execute()
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\core\management\__init__.py", line 436, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\core\management\base.py", line 413, in run_from_argv
    self.execute(*args, **cmd_options)
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\core\management\base.py", line 459, in execute
    output = self.handle(*args, **options)
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\core\management\base.py", line 107, in wrapper
    res = handle_func(*args, **kwargs)
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\core\management\commands\migrate.py", line 303, in handle
    pre_migrate_apps = pre_migrate_state.apps
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\utils\functional.py", line 47, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\db\migrations\state.py", line 565, in apps
    return StateApps(self.real_apps, self.models)
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\db\migrations\state.py", line 626, in __init__
    self.render_multiple([*models.values(), *self.real_models])
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\db\migrations\state.py", line 664, in render_multiple
    model.render(self)
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\db\migrations\state.py", line 957, in render
    return type(self.name, bases, body)
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\db\models\base.py", line 143, in __new__
    new_class.add_to_class("_meta", Options(meta, app_label))
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\db\models\base.py", line 371, in add_to_class
    value.contribute_to_class(cls, name)
  File "C:\Users\dell\AppData\Local\Programs\Python\Python312\Lib\site-packages\django\db\models\options.py", line 220, in contribute_to_class
    raise TypeError(
TypeError: 'class Meta' got invalid attribute(s): index_together

如何解决此错误，需要进行哪些更改才能成功迁移？

如何解决此错误，需要进行哪些更改才能成功迁移？ 在较新版本的 Django 中是否有替代 index_together 的方法？

Answer 1

在 Django 5.1 版本中，本文档中提到的

index_together

键已被删除。

https://docs.djangoproject.com/en/5.1/releases/5.1/

检查您正在使用的 Django 版本以及 Django 文档以供进一步参考。