Django无法通过管理员下载文件

Question

我正在使用 Django 1.10.5 版构建一个安装了以下应用程序的网站：

• django.contrib.admin
• django.contrib.auth
• django.contrib.contenttypes
• django.contrib.sessions
• django.contrib.messages
• django.contrib.staticfiles
• bootstrap3
• 我的应用程序
• 存储

在 models.py 我定义了以下类：

class SourceData(models.Model):
    File = models.FileField(blank=True, null=True, upload_to='Upload')

在网站上我尝试通过管理员上传文件，这是成功的。但是，如果我点击上传的文件，我会得到一个 Page not found 404 错误。

感谢任何帮助或想法。 提前致谢！

更新 12:45 CET

settings.py

"""
Generated by 'django-admin startproject' using Django 1.10.5.
"""

import os
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
SECRET_KEY = ''
DEBUG = True
ALLOWED_HOSTS = ["*"]
INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'bootstrap3',
    'myapp',
    'storages',
]
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 = 'myapp.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 = 'myapp.wsgi.application'
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}
LOGIN_REDIRECT_URL = '/admin'
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',
    },
]
LANGUAGE_CODE = 'DE-de'
TIME_ZONE = 'CET'
USE_I18N = True
USE_L10N = True
USE_TZ = True
STATIC_URL = '/static/'

urls.py:

"""myapp URL Configuration
"""
from django.conf.urls import url
from django.contrib import admin
from myapp import views
from django.contrib.auth import views as auth_views

urlpatterns = [
    url(r'^admin/', admin.site.urls, name='admin'),
    url(r'^helloworld/', views.helloworld, name='Hello World!'),
    url(r'^login/$', auth_views.login, name='login'),
    url(r'^logout/$', auth_views.logout, name='logout')
]

Answer 1

可能你需要将这行添加到 urls.py 文件中（导入需要的库）

if settings.DEBUG:
    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
    urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_URL)

完整解释 https://docs.djangoproject.com/en/1.11/howto/static-files/#serving-files-uploaded-by-a-user-during-development