如何修复 ImproperlyConfigured：QuerySet 类不继承自 TranslatableQuerySet

Question

我的项目有 ImproperlyConfigured 错误。请帮助我。

错误主体：

Internal Server Error: /en/admin/posts/post/
Traceback (most recent call last):
  File "C:\Users\User\.virtualenvs\news-Jjvbi-2o\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
    response = get_response(request)
  File "C:\Users\User\.virtualenvs\news-Jjvbi-2o\lib\site-packages\django\core\handlers\base.py", line 179, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\User\.virtualenvs\news-Jjvbi-2o\lib\site-packages\django\contrib\admin\options.py", line 614, in wrapper
    return self.admin_site.admin_view(view)(*args, **kwargs)
  File "C:\Users\User\.virtualenvs\news-Jjvbi-2o\lib\site-packages\django\utils\decorators.py", line 130, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "C:\Users\User\.virtualenvs\news-Jjvbi-2o\lib\site-packages\django\views\decorators\cache.py", line 44, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
  File "C:\Users\User\.virtualenvs\news-Jjvbi-2o\lib\site-packages\django\contrib\admin\sites.py", line 233, in inner
    return view(request, *args, **kwargs)
  File "C:\Users\User\.virtualenvs\news-Jjvbi-2o\lib\site-packages\django\utils\decorators.py", line 43, in _wrapper
    return bound_method(*args, **kwargs)
  File "C:\Users\User\.virtualenvs\news-Jjvbi-2o\lib\site-packages\django\utils\decorators.py", line 130, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "C:\Users\User\.virtualenvs\news-Jjvbi-2o\lib\site-packages\django\contrib\admin\options.py", line 1693, in changelist_view
    cl = self.get_changelist_instance(request)
  File "C:\Users\User\.virtualenvs\news-Jjvbi-2o\lib\site-packages\django\contrib\admin\options.py", line 735, in get_changelist_instance
    return ChangeList(
  File "C:\Users\User\.virtualenvs\news-Jjvbi-2o\lib\site-packages\django\contrib\admin\views\main.py", line 57, in __init__
    self.root_queryset = model_admin.get_queryset(request)
  File "C:\Users\User\.virtualenvs\news-Jjvbi-2o\lib\site-packages\parler\admin.py", line 279, in get_queryset
    qs = super().get_queryset(request)
  File "C:\Users\User\.virtualenvs\news-Jjvbi-2o\lib\site-packages\parler\admin.py", line 150, in get_queryset
    raise ImproperlyConfigured(
django.core.exceptions.ImproperlyConfigured: QuerySet class does not inherit from TranslatableQuerySet
[26/Jan/2022 11:06:32] "GET /en/admin/posts/post/ HTTP/1.1" 500 108753

我的设置.py：

"""
Django settings for config project.

Generated by 'django-admin startproject' using Django 3.1.

For more information on this file, see
https://docs.djangoproject.com/en/3.1/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.1/ref/settings/
"""

from pathlib import Path
import os
from django.utils.translation import gettext_lazy as _ 

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve(strict=True).parent.parent


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = ''

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    # tashqi app
    'rest_framework',
    "corsheaders",
    'rosetta',
    'taggit',
    'hitcount',
    'parler',
    
    # ichki app
    'posts',
    
]

REST_FRAMEWORK = {
    'DEFAULT_PERMISSION_CLASSES':[
        'rest_framework.permissions.AllowAny'
    ]
}

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.locale.LocaleMiddleware',
    "corsheaders.middleware.CorsMiddleware",
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

CORS_ALLOWED_ORIGINS = [
    "http://localhost:3000",
    "http://localhost:8000",
    # 'http://127.0.0.1:8000/',
    # 'http://127.0.0.1:3000/',
]

ROOT_URLCONF = 'config.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [str(BASE_DIR.joinpath('templates'))],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
            'libraries' : {
                'staticfiles': 'django.templatetags.static', 
            }
        },
    },
]

WSGI_APPLICATION = 'config.wsgi.application'


# Database
# https://docs.djangoproject.com/en/3.1/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}


# Password validation
# https://docs.djangoproject.com/en/3.1/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/3.1/topics/i18n/




LANGUAGES = (
('uz', _('Uzbek')),
('ru', _('Russian')),
('en', _('English')),
('tr', _('Turkish')),
)

LANGUAGE_CODE = 'en'

TIME_ZONE = 'Asia/Tashkent'

USE_I18N = True

USE_L10N = True

USE_TZ = True

LOCALE_PATHS = (
    BASE_DIR, 'locale/',
)


PARLER_LANGUAGES = {
None: (
{'code': 'uz'},
{'code': 'ru'},
{'code': 'en'},
{'code': 'tr'},
),
'default': {
'fallback': 'en',
'hide_untranslated': False,
}
}


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.1/howto/static-files/

# STATIC_URL = '/static/'
# STATIC_DIR = BASE_DIR / 'static/'
# # STATIC_ROOT = BASE_DIR / 'static/'
# # STATICFILES_DIRS = (
# #     #This lets Django collectstatic store our bundles
# #     os.path.join(BASE_DIR, 'assets'), 
# #     os.path.join(BASE_DIR, 'resources'), 
# # )
# STATICFILES_DIRS = [STATIC_DIR]

STATIC_URL = '/static/'
STATICFILES_DIRS = (str(BASE_DIR.joinpath('static')),) # new
STATIC_ROOT = str(BASE_DIR.joinpath('staticfiles')) # new
STATICFILES_STORAGE = 'django.contrib.staticfiles.storage.StaticFilesStorage'



# MEDIA
MEDIA_URL = '/media/'
MEDIA_ROOT = BASE_DIR / 'media'

我的模型.py：

from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User
from hitcount.models import HitCountMixin, HitCount
from django.contrib.contenttypes.fields import GenericRelation
from django.urls import reverse
from taggit.managers import TaggableManager
from django.utils.html import mark_safe
from django.utils.translation import gettext_lazy as _
from parler.models import TranslatableModel, TranslatedFields



# Create your models here.

STATUS_CHOICES = ( 
        ('draft', 'Draft'), 
        ('published', 'Published'), 
    )

class PublishedManager(models.Manager): 
    def get_queryset(self): 
        return super(PublishedManager, self).get_queryset().filter(status='published')


class Post(TranslatableModel):
    translations = TranslatedFields(
        title = models.CharField(_('title'),max_length=200,  db_index=True),
        slug = models.SlugField(_('slug'), max_length=250, unique=True,  db_index=True),
        body = models.TextField(_("body"), db_index=True),  
    )
    author = models.ForeignKey(User, on_delete=models.CASCADE, related_name='blog_posts')
    image = models.ImageField(upload_to="post_images/%Y/%m/%d/")
    # publish = models.DateTimeField(default=timezone.now) 
    created = models.DateTimeField(auto_now_add=True) 
    updated = models.DateTimeField(auto_now=True) 
    status = models.CharField(max_length=10, choices=STATUS_CHOICES, default='draft') 
    views = models.PositiveIntegerField(default=0)
    objects = models.Manager() # The default manager. 
    published = PublishedManager() # Our custom manager.
    tags = TaggableManager() # Tag maneger

    
    # class Meta: 
    #     ordering = ('-publish',) 

    def __str__(self): 
        return self.title

    def get_absolute_url(self):
        return reverse('blog:post_detail',
                       args=[self.created.year,
                             self.created.month,
                             self.created.day,
                             self.slug])

    def avatar_tag(self):
        return mark_safe('<img src="/media/%s" width="50" height="50" />' % (self.image))
    
    avatar_tag.short_description = 'Rasmi'
    

我的admin.py：

from django.contrib import admin
from .models import Post, Card, Contact
from django.utils.html import mark_safe
from parler.admin import TranslatableAdmin
# Register your models here.

@admin.register(Post)
class PostAdmin(TranslatableAdmin):
    list_display = ('title', 'slug', 'author', 'created','status',"avatar_tag")
    list_filter = ('status', 'created',  'author')
    search_fields = ('title', 'body')
    raw_id_fields = ('author',)
    date_hierarchy = 'created'
    ordering = ('status', 'created')
    readonly_fields = ('avatar_tag',)

    def get_prepopulated_fields(self, request, obj=None):
        return {'slug': ('title',)}

    def avatar_tag(self, obj):
        return obj.avatar_tag

    avatar_tag.short_description = 'Rasmi'
 my views.py :


class ListPost(ListAPIView):
    queryset = Post.objects.order_by('-created').all()
    serializer_class = PostSerializer
    

py序列化器.py：

from rest_framework import serializers
from .models import Post, Card

class PostSerializer(serializers.ModelSerializer):
    class Meta:
        model = Post
        fields = (
            'id', 
            'title', 
            'slug',
            'author',
            'image',
            'body',
            'publish',
            'status',
        )

py urls.py（在应用程序中）：

from django.urls import path
from .views import ListPost, DetailPost, ListCard, DetailCard
from django.utils.translation import gettext_lazy as _

urlpatterns = [
    path(_('<int:pk>/'), DetailPost.as_view()),
    path(_(''), ListPost.as_view()),
    path(_('<int:pk>/card/'), DetailCard.as_view()),
]

我的 urls.py（主要）：

“”

from django.contrib import admin
from django.urls import path, include, re_path
from django.conf import settings
from django.conf.urls.static import static
from django.utils.translation import gettext_lazy as _
from django.conf.urls.i18n import i18n_patterns
from posts.views import ContactView

urlpatterns = i18n_patterns (
    path(_('admin/'), admin.site.urls),
    path('rosetta/', include('rosetta.urls')),
    path(_('posts/'), include('posts.urls'), name='posts'),
    path(_('hitcount/'), include(('hitcount.urls', 'hitcount'), namespace='hitcount')),
    path('contact/', ContactView, name='contact')
 )
if settings.DEBUG:
    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

我有 2 个型号。卡片和邮政。刷卡可以，但是邮寄不行。 我是 django 新手，因为我在 2 天之前没有找到解决这个问题的方法。

请帮我解决

Answer 1

我也有同样的问题。我不确定这背后的原因是什么，但我用该项目的一个小版本进行了测试，如果您删除字段对象并在 Post 模型中发布，它就可以工作。可能有一个更具技术性的解决方案，但现在我将尝试修复此问题，删除模型管理器。

Answer 2

这是因为您刚刚在中定义了一个自定义查询集

objects = models.Manager() # The default manager. 

解决这个导入TranslatableQuerySet

from parler.managers import TranslatableQuerySet

并使其像

objects = CustomQuerySet.as_manager()

和

class CustomQuerySet(TranslatableQuerySet):
  # Your custom queryset methods
  pass