我有以下情况。项目文件存储在 ~/django-apps/app-old/app. 由于某些原因,我将文件移动到 ~/django-apps/app 。应用程序有一些图像,使用 ImageField 存储。在数据库图像中,路径如下:
~/django-apps/app-old/app/media/images/blabla.jpeg
所以,我需要在数据库中修复这个路径,如下所示:
~django-apps/app/media/images/blabla.jpeg
我尝试为此编写管理命令:
from django.core.management.base import BaseCommand, CommandError
from books.models import Book
import string
class Command(BaseCommand):
help = ''
def handle(self, *args, **options):
books = Book.objects.all()
total = len(books)
curr = 1
for book in books:
print "%d/%d" % (curr, total)
if book.cover_url != "":
book.cover_url.path = string.replace(book.cover_url.path, "app-old/", "")
book.save()
curr+=1
通过使用此命令,我收到以下错误:
Traceback (most recent call last):
File "manage.py", line 11, in <module>
execute_manager(settings)
File "/usr/local/lib/python2.6/dist-packages/django/core/management/__init__.py", line 438, in execute_manager
utility.execute()
File "/usr/local/lib/python2.6/dist-packages/django/core/management/__init__.py", line 379, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python2.6/dist-packages/django/core/management/base.py", line 191, in run_from_argv
self.execute(*args, **options.__dict__)
File "/usr/local/lib/python2.6/dist-packages/django/core/management/base.py", line 220, in execute
output = self.handle(*args, **options)
File "/var/www/dizpers/data/django-apps/app/books/management/commands/fix-covers-path.py", line 23, in handle
book.cover_url.path = string.replace(book.cover_url.path, "bparser-old/", "")
File "/usr/local/lib/python2.6/dist-packages/django/db/models/fields/files.py", line 65, in _get_path
return self.storage.path(self.name)
File "/usr/local/lib/python2.6/dist-packages/django/core/files/storage.py", line 234, in path
raise SuspiciousOperation("Attempted access to '%s' denied." % name)
django.core.exceptions.SuspiciousOperation: Attempted access to '/var/www/dizpers/data/django-apps/app-old/app/media/covers/a3d9545d3a17bb68a91749019c95357d.jpeg' denied.
为什么我会收到此错误消息?如何修复图像的路径?
UPD1
我的模型包含这样的 ImageField:
cover_url = models.ImageField(upload_to=os.path.join(MEDIA_ROOT, "covers"), null=True, default=None)
UPD2