Django：更新文件

Question

我正在尝试上传文件，但上传后我无法打开它，因为它显示一条错误消息，指出没有包含该主键的对象。我认为错误应该在网址或路径中（MEDIA_ROOT），但无法找出问题所在。

有什么建议吗？

setings.py

import os

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

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

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

models.py

class Foo(models.Model):
    file = models.FileField(upload_to="file_folder/", blank = True, null = True)

urls.py

from django.conf.urls import patterns, include, url
from django.contrib import admin
from django.conf import settings
from django.utils.translation import ugettext_lazy as _

urlpatterns = patterns('',
    url(r'^admin/', include(admin.site.urls)),

)

if settings.DEBUG:
    urlpatterns += patterns('',
    url(r'^media/(?P<path>.*)$', 'django.views.static.serve', {
        'document_root': settings.MEDIA_ROOT,
    }),
    url(r'^static/(?P<path>.*)$', 'django.views.static.serve', {
        'document_root': settings.STATIC_ROOT,
    }),
)

--编辑--

我正在使用管理界面，所以没有 Views.py

并且没有显示回溯，只有以下错误：

错误

Request Method: GET
Request URL:http://localhost:8000/admin/db_personal/foo/3/media/file_folder/django.pdf/
foo object with primary key u'3/media/file_folder/django.pdf' does not exist.

Answer 1

MEDIA_URL 需要是绝对路径，如 STATIC_URL:

MEDIA_URL = "/media/"

Django：更新文件

Django: updating file

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