django - 新模型对象在 Django 中五分钟后消失

Question

每当我在我的一个模型中创建一个新对象时，它们都会存在大约五分钟然后消失。我检查了我的管理视图和 shell 中的查询集，它们就消失了。我不明白发生了什么，所以如果有人有任何想法，那将非常有用。

这些是模型：

class Character(models.Model):
    image = models.ImageField()
    name = models.CharField(max_length=100)
    age = models.IntegerField()
    story = models.CharField(max_length=500)
    
    def __str__(self):
        return self.name

class Movie(models.Model):
    image = models.ImageField()
    title = models.CharField(max_length=100)
    creation_date = models.DateField(auto_now=True)
    rating = models.IntegerField()
    characters = models.ManyToManyField(Character, blank=True, related_name='movies') 
    
    def __str__(self):
        return self.title

这些是意见：

class CharacterCreateAPI(generics.CreateAPIView):
    queryset = Character.objects.all()
    serializer_class = CharacterSerializer
    permission_classes = (AllowAny,)

class MovieCreateAPI(generics.CreateAPIView):
    queryset = Movie.objects.all()
    serializer_class = MovieSerializer
    permission_classes = (AllowAny,)

这些是序列化程序：

class CharacterSerializer(serializers.ModelSerializer):
    movies = serializers.PrimaryKeyRelatedField(queryset=Movie.objects.all())
    
    class Meta: 
        model = Character
        fields = ['name', 'age', 'image', 'movies', 'story']
        extra_kwargs = {'image': {'required': False, 'allow_null': True}}
        
        
class MovieSerializer(serializers.ModelSerializer):
    
    class Meta: 
        model = Movie
        fields = ('title', 'image', 'rating', 'characters')
        extra_kwargs = {'image': {'required': False, 'allow_null': True}}
    
    def create(self, validated_data):
        characters = validated_data.pop('characters')
        movie = Movie.objects.create(**validated_data)
        if characters:
            movie.set(characters)
        movie.save()
        return movie

设置：

from pathlib import Path

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


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.2/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',
    'rest_framework',
    'rest_auth',
    'django.contrib.sites',
    'allauth',
    'allauth.account',
    'rest_auth.registration',
    'rest_framework.authtoken',
    'core'
]

SITE_ID = 1

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

ROOT_URLCONF = 'mysite.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        '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',
            ],
        },
    },
]

WSGI_APPLICATION = 'mysite.wsgi.application'


# Database
# https://docs.djangoproject.com/en/3.2/ref/settings/#databases

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


# Password validation
# https://docs.djangoproject.com/en/3.2/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/3.2/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.2/howto/static-files/

STATIC_URL = '/static/'

# Default primary key field type
# https://docs.djangoproject.com/en/3.2/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'

REST_FRAMEWORK = {
     'DEFAULT_PERMISSION_CLASSES': [
         'rest_framework.permissions.IsAuthenticated',
         'rest_framework.permissions.IsAdminUser',
         'rest_framework.permissions.AllowAny',
         ],
    'DEFAULT_AUTHENTICATION_CLASSES': (
     'rest_framework.authentication.TokenAuthentication',
     )
}

标签： djangodjango-rest-framework