图片上传到django中的“None”文件夹

Question

我正在尝试通过ajax上传图片。图像上传得很好，但它在MEDIA_ROOT的upload_to值和ImageField参数之间的“None”文件夹中传递。

我目前的设置如下：

MEDIA_ROOT = (os.path.join(BASE_DIR, 'static', 'media'))

在我的应用程序的models.py中：

image = models.ImageField(blank=True, null=True, upload_to=get_image_path)

和

def get_image_path(instance, filename):
    return os.path.join(connection.tenant.schema_name, 'img', 'devices', filename)

当我上传图像时，它会转到static/media/None/(tenant.schema_name)/img/devices，而不是static/media/(tenant.schema_name)/img/devices

（图中，tenant.schema_name是“ars”）

表格如下：

class DeviceForm(ModelForm):
    class Meta:
        model = Device
        fields = ['name', 'model', 'serial', 'location', 'note', 'image', 'page', 'address']

和保存片段：

    if request.method == 'POST':
        post_data = request.POST.dict()
        form = DeviceForm(post_data, request.FILES)
        if not form.is_valid():
            return JsonResponse({"message": "Form is invalid"}, status=400)
        obj = form.save()
        return JsonResponse(obj.to_dict(), safe=False)

有没有我错过的配置？任何帮助，将不胜感激

编辑：这是整个settings.py：

import os
from django.utils.translation import ugettext_lazy

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.11/howto/deployment/checklist/

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

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

if DEBUG:
    ALLOWED_HOSTS = ['*']   # Allow any host during debug mode
else:
    ALLOWED_HOSTS = []


# Application definition

SHARED_APPS = [
    'tenant_schemas',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    # 'cloud_admin',
    'cloud_core',

]

TENANT_APPS = [
    'django.contrib.contenttypes',
    'django.contrib.auth',
    'cloud_core.users',
    'cloud_data',
    'cloud_apps.dashboard',
    'cloud_apps.device',
    'cloud_apps.device_pages.kr',
    # 'cloud_apps',
]

INSTALLED_APPS = list(SHARED_APPS) + [app for app in TENANT_APPS if app not in SHARED_APPS]

MIDDLEWARE = [

    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.locale.LocaleMiddleware',
    'ArsCloud.middleware.TenantSelectionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'ArsCloud.middleware.LoginRequiredMiddleware',
]

ROOT_URLCONF = 'ArsCloud.urls_public'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [
            os.path.join(BASE_DIR, "templates"),
            os.path.join(BASE_DIR, "cloud_core", "templates"),
            os.path.join(BASE_DIR, "cloud_admin", "templates"),
            os.path.join(BASE_DIR, "cloud_data", "templates"),
            os.path.join(BASE_DIR, "cloud_apps", "dashboard", "templates"),
            os.path.join(BASE_DIR, "cloud_apps", "device", "templates"),
            os.path.join(BASE_DIR, "cloud_apps", "device-pages", "templates"),
            os.path.join(BASE_DIR, "cloud_apps", "device-pages", "kr", "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',
                'cloud_core.context_processors.tenant'
            ],
        },
    },
]

WSGI_APPLICATION = 'ArsCloud.wsgi.application'


# Database
# https://docs.djangoproject.com/en/1.11/ref/settings/#databases

DATABASES = {
    (database)
}

DATABASE_ROUTERS = (
    'tenant_schemas.routers.TenantSyncRouter',
)


# Password validation
# https://docs.djangoproject.com/en/1.11/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/1.11/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True

# Language support
LOCALE_PATHS = [
    os.path.join(BASE_DIR, 'locale/')
]
LANGUAGES = (
    (u'ja', ugettext_lazy('Japanese')),
    (u'en', ugettext_lazy('English'))
)

# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.11/howto/static-files/

STATIC_URL = '/static/'
# STATICFILES_DIRS = [
#     os.path.join(BASE_DIR, "static"),
# ]
STATIC_ROOT = os.path.join(BASE_DIR, 'static', 'static_root')

STATICFILES_DIRS = (
    os.path.join(BASE_DIR, 'static', 'static_dirs'),
    )

MEDIA_ROOT = (os.path.join(BASE_DIR, 'static', 'media'))
MEDIA_URL = '/static/media/'


LOGIN_URL = '/login/'
LOGIN_REDIRECT_URL = '/'
LOGIN_EXEMPT_URLS = [
    "upload_device_data"
]

TENANT_MODEL = 'cloud_core.Tenant'
DEFAULT_FILE_STORAGE = 'tenant_schemas.storage.TenantFileSystemStorage'
PUBLIC_SCHEMA_URLCONF = 'ArsCloud.urls_public'
ADMIN_SCHEMA_URLCONF = 'ArsCloud.urls_admin'
TENANT_SCHEMA_URLCONF = 'ArsCloud.urls_tenant'
ARSUSER_SCHEMA = "ars"

POST_TOKEN_KEY = {'key': (key), 'iv': "Salt for hashing"}


DUMMY_DB_PATH = os.path.join(BASE_DIR, 'falsedb')
DUMMY_DB_FILE = os.path.join(DUMMY_DB_PATH, 'config.json')

我使用了下面答案建议的配置，但是我在MEDIA_ROOT和upload_to参数之间仍然有一个“None”文件夹

Answer 1

您应该在settings.py文件中定义media dir。您要从网站上传的图像和文件，存储在媒体目录中。

STATIC_URL = '/static/'
STATIC_ROOT = os.path.join(BASE_DIR, 'static', 'static_root')

STATICFILES_DIRS = (
    os.path.join(BASE_DIR, 'static', 'static_dirs'),
    )

MEDIA_ROOT = os.path.join(BASE_DIR, 'static', 'media')

MEDIA_URL = '/media/'

您需要项目内的静态目录。树目录是这样的：

static -
        |-static_root
        |-static_dirs
        |-media

请创建这4个目录：static，static_root，static_dirs，media

Answer 2

在整个项目目录中的同一级别（与manage.py相同的级别）创建media和static作为文件夹，然后尝试：

PROJECT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
BASE_DIR = os.path.dirname(PROJECT_DIR)

STATIC_ROOT = os.path.join(BASE_DIR, 'static')
STATIC_URL = '/static/'

MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
MEDIA_URL = '/media/'

媒体和静态文件夹用于两个完全不同的东西，媒体不应该嵌套在静态内部。媒体文件夹用于用户上传的内容，您定义的MEDIA_ROOT是用户上传的内容上传到的地方（MEDIA_ROOT中的子文件夹是通过upload_to=.....设置的）。静态文件夹和（和子文件夹）包含您定义为网站一部分的内容（例如css，js）。

我也会做这个小改动（不需要request.POST.dict()）：

if request.method == 'POST':
    form = DeviceForm(request.POST, request.FILES)