使用翻译字段作为“唯一”上升NameError，django-parler

Question

我最近安装了django-parler==2.2，当我重写模型从TranslatableModel继承并尝试从makemigrations继承时，我得到以下错误：

main_menu_slug = models.SlugField(max_length=120, unique=main_menu_item) NameError: name 'main_menu_item' is not defined

当我从models.Model继承时，一切都很好。以下是代码：

class MenuItem(TranslatableModel):

    translations = TranslatedFields (
        main_menu_item = models.CharField(max_length=60),
        main_menu_slug = models.SlugField(max_length=120, unique=main_menu_item)
    )

我刚刚开始使用这个模块，所以它可能是一些琐碎的东西，但我找不到解决方案。我做错什么了？

全面回溯：

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 "C:\project\alfa\lib\site-packages\django\core\management\__init__.py", line 401, in execute_from_command_line
    utility.execute()
  File "C:\project\alfa\lib\site-packages\django\core\management\__init__.py", line 377, in execute
    django.setup()
  File "C:\project\alfa\lib\site-packages\django\__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\project\alfa\lib\site-packages\django\apps\registry.py", line 114, in populate
    app_config.import_models()
  File "C:\project\alfa\lib\site-packages\django\apps\config.py", line 211, in import_models
    self.models_module = import_module(models_module_name)
  File "C:\Users\user\AppData\Local\Programs\Python\Python37\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "C:\project\alfa\project\menus\models.py", line 16, in <module>
    class MenuItem(TranslatableModel):
  File "C:\project\alfa\project\menus\models.py", line 20, in MenuItem
    main_menu_slug = models.SlugField(max_length=120, unique=main_menu_item)
NameError: name 'main_menu_item' is not defined

工作代码models.Model

class MenuItem(models.Model):
    main_menu_item = models.CharField(max_length=60)
    main_menu_slug = models.SlugField(max_length=120, unique=main_menu_item)

Answer 1

unique应该是一个布尔值，如docs：https://docs.djangoproject.com/en/3.1/ref/models/fields/#unique所示