Django - FileField对于基数为10的int（）的文字无效：'media'

我正在Django制作简单的博客网站，我收到了这个错误： invalid literal for int() with base 10: 'media' . 当我在我的博客应用程序中将modelsField添加到models.py时，它很高兴 . 这是一些代码：

models.py

from django.db import models
from django.contrib.auth.models import User
from django.utils import timezone


class Post(models.Model):

    STATUS_CHOICES = (
        ('draft', 'Roboczy'),
        ('publish', 'Publiczny')
    )

    author = models.ForeignKey(User)
    title = models.CharField(max_length=140)
    slug = models.SlugField(max_length=140)
    image = models.FileField(blank=False, null=False, upload_to='media_cdn')
    body = models.TextField()
    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')

    class Meta:
        ordering = ['-publish']

    def __str__(self):
        return self.title

这是settings.py的一部分：

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

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

和urls.py

from django.conf import settings
from django.conf.urls import url, include
from django.conf.urls.static import static
from django.contrib import admin

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^', include('blog.urls'))
]

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

非常感谢您的帮助！

编辑：完全引用：

环境：请求方法：GET请求URL：http：//127.0.0.1：8000 / media / media_cdn / e1980c9642c03529db70a9c6060f247f.jpg Django版本：1.11.4 Python版本：3.6.2已安装的应用程序：['pagedown'，'markdown_deux' ，'blog'，'django.contrib.admin'，'django.contrib.auth'，'django.contrib.contenttypes'，'django.contrib.sessions'，'django.contrib.messages'，'django.contrib . staticfiles']已安装的中间件：['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'] Traceback：File“/ home / zamknijryjx / Pictures / test / env / lib / python3.6 / site-packages / django / core / handlers / exception.py“in inner 41. response = get_response（request）File”/home/zamknijryjx/Pictures/test/env/lib/python3.6 /site-packages/django/core/handlers/base.py“in _get_response 187. response = self.process_exception_by_middleware（e，request）File”/home/zamknijryjx/Pictures/test/env/lib/python3.6/site- package / django / core / handlers / base.py“in _get_response 185. response = wrapped_callback（request，* callback_args，** callback_kwargs）File”/home/zamknijryjx/Pictures/test/env/lib/python3.6/site- package / django / views / generic / base.py“在视图68中 . 返回self.dispatch（request，* args，** kwargs）文件”/home/zamknijryjx/Pictures/test/env/lib/python3.6/site -packages / django / views / generic / base.py“在dispatch 88. return handler（request，* args，** kwargs）File”/home/zamknijryjx/Pictures/test/env/lib/python3.6/site-获取115中的packages / django / views / generic / detail.py“self.object = self.get_object（）文件”/home/zamknijryjx/Pictures/test/env/lib/python3.6/site-packages/django/ views / generic / detail.py“in get_object 38. queryset = queryset.filter（pk = pk）File”/home/zamknijryjx/Pictures/test/env/lib/python3.6/site-pa过滤器784中的ckages / django / db / models / query.py“ . 返回self._filter_or_exclude（False，* args，** kwargs）文件”/home/zamknijryjx/Pictures/test/env/lib/python3.6/site -packages / django / db / models / query.py“in filter_or_exclude 802. clone.query.add_q（Q（* args，** kwargs））File”/ home / zamknijryjx / Pictures / test / env / lib / python3 . 6 / site-packages / django / db / models / sql / query.py“在add_q 1250. clause中， = self.add_q（q_object，self.used_aliases）文件”/ home / zamknijryjx / Pictures / test / env / lib /adthon3.6/site-packages/django/db/models/sql/query.py“在_add_q 1276. allow_joins = allow_joins，split_subq = split_subq，File”/ home / zamknijryjx / Pictures / test / env / lib / python3 . 6 / site-packages / django / db / models / sql / query.py“在build_filter 1210中 . 条件= self.build_lookup（lookups，col，value）文件”/ home / zamknijryjx / Pictures / test / env / lib / python3 build_lookup 1104中的.6 / site-packages / django / db / models / sql / query.py“返回final_lookup（lhs，rhs）文件”/home/zamknijryjx/Pictures/test/env/lib/python3.6/site -packages /贾ngo / db / models / lookups.py“在init 24. self.rhs = self.get_prep_lookup（）文件”/home/zamknijryjx/Pictures/test/env/lib/python3.6/site-packages/django/db/ models / lookups.py“在get_prep_lookup 74中 . 返回self.lhs.output_field.get_prep_value（self.rhs）文件”/home/zamknijryjx/Pictures/test/env/lib/python3.6/site-packages/django/db/ model fields / init.py“in get_prep_value 966.return int（value）异常类型：ValueError at /media/media_cdn/e1980c9642c03529db70a9c6060f247f.jpg异常值：int（）的文字无效，基数为10：'media'

博客/ urls.py

from django.contrib.auth.urls import url
from .views import PostList, PostDetail

urlpatterns = [
    url(r'^$', PostList.as_view(), name='blog'),
    url(r'(?P<pk>[^/]+)', PostDetail.as_view(), name='post'),
    url(r'(?P<pk>[^/]+)/(?P<slug>[-\w]+)$',
        PostDetail.as_view(), name='post_detail'),
]