I now work with mongoengine, mongoForm
and set this in setting.py
DEFAULT_FILE_STORAGE = 'mongoengine.django.storage.GridFSStorage'
I need to upload a picture, and I wrote a form like this:
from django.forms import ImageField
from mongoforms import MongoForm
from documents import UserProfile
class ProfileForm(MongoForm):
photo = ImageField()
class Meta:
document = UserProfile
exclude = ('user', 'photo')
but I get a Invalid Image Error when I submit a picture( how ever, it's ok
when I use PIL.Image.open(photo).verify() )
I review the code, and found the exception was raise on
django.forms.fields.ImageField.to_python method
code snippet for to_python method:
def to_python(self, data):
....
if hasattr(data, 'temporary_file_path'):
file = data.temporary_file_path()
....
try:
Image.open(file).verify()
except ImportError:
raise
except Exception: # Python Imaging Library doesn't recognize it as
an image
raise ValidationError(self.error_messages['invalid_image'])
...
well, I don't know well to set temporary_file_path and how to
storage it with mongoengine.django.storage.GridFSStorage
# this was snippet for class ImageField
def to_python(self, data):
"""
Checks that the file-upload field data contains a valid image (GIF,
JPG,
PNG, possibly others -- whatever the Python Imaging Library
supports).
"""
f = super(ImageField, self).to_python(data)
if f is None:
return None
# Try to import PIL in either of the two ways it can end up
installed.
try:
from PIL import Image
except ImportError:
import Image
# We need to get a file object for PIL. We might have a path or we
might
# have to read the data into memory.
if hasattr(data, 'temporary_file_path'):
file = data.temporary_file_path()
else:
if hasattr(data, 'read'):
file = StringIO(data.read())
else:
file = StringIO(data['content'])
try:
# load() could spot a truncated JPEG, but it loads the entire
# image in memory, which is a DoS vector. See #3848 and #18520.
# verify() must be called immediately after the constructor.
Image.open(file).verify()
except ImportError:
# Under PyPy, it is possible to import PIL. However, the
underlying
# _imaging C module isn't available, so an ImportError will be
# raised. Catch and re-raise.
raise
except Exception: # Python Imaging Library doesn't recognize it as
an image
raise ValidationError(self.error_messages['invalid_image'])
if hasattr(f, 'seek') and callable(f.seek):
f.seek(0)
return f
this was exception stack
Environment:
Request Method: POST
Request URL: http://localhost:8000/accounts/profile/
Django Version: 1.4
Python Version: 2.7.3
Installed Applications:
['django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'registration',
'bussiness',
'accounts',
'debug_toolbar']
Installed Middleware:
['django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'debug_toolbar.middleware.DebugToolbarMiddleware']
Traceback:
File
"/home/yan/env/haoyoubang/local/lib/python2.7/site-packages/django/core/handlers/base.py"
in get_response
111. response = callback(request, *callback_args,
**callback_kwargs)
File
"/home/yan/env/haoyoubang/local/lib/python2.7/site-packages/django/contrib/auth/decorators.py"
in _wrapped_view
20. return view_func(request, *args, **kwargs)
File "/home/yan/git/haoyoubang/accounts/views.py" in profile
31. processFile(request.FILES['photo'])
File "/home/yan/git/haoyoubang/accounts/views.py" in processFile
21. s = f.clean(photo)
File
"/home/yan/env/haoyoubang/local/lib/python2.7/site-packages/django/forms/fields.py"
in clean
535. return super(FileField, self).clean(data)
File
"/home/yan/env/haoyoubang/local/lib/python2.7/site-packages/django/forms/fields.py"
in clean
153. value = self.to_python(value)
File
"/home/yan/env/haoyoubang/local/lib/python2.7/site-packages/django/forms/fields.py"
in to_python
593. raise
ValidationError(self.error_messages['invalid_image'])
Exception Type: ValidationError at /accounts/profile/
Exception Value:
[u'\u8bf7\u4e0a\u4f20\u4e00\u5f20\u6709\u6548\u7684\u56fe\u7247\u3002\u60a8\u6240\u4e0a\u4f20\u7684\u6587\u4ef6\u4e0d\u662f\u56fe\u7247\u6216\u8005\u662f\u5df2\u635f\u574f\u7684\u56fe\u7247\u3002']
thank you !!
--
You received this message because you are subscribed to the Google Groups
"Django users" group.
To view this discussion on the web visit
https://groups.google.com/d/msg/django-users/-/1ZkKiljeFHcJ.
To post to this group, send email to django-users@googlegroups.com.
To unsubscribe from this group, send email to
django-users+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/django-users?hl=en.
