I setup S3Storage as my default storage and can successfully upload
images to S3 without overriding save on my profile_update below. Right
now, when I submit a form with an image I get the original image
uploaded in my S3 bucket not a thumbnail and an IO Error - "cannot
identify image file" - traceback all the way down. I know its
complicated but I have to imagine other people will attempt to create
a thumbnail in memory and upload to S3 without saving locally. Thank
you for helping.
models.py
========
class UserProfile(models.Model):
user = models.ForeignKey(User, unique=True)
picture = models.ImageField(upload_to='profiles', null=True,
blank=True)
views.py
=======
def resize_image(buf, size=(100, 100)):
import Image as PILImage
import cStringIO
f = cStringIO.StringIO(buf)
image = PILImage.open(f)
if image.mode not in ('L', 'RGB'):
image = image.convert('RGB')
image.thumbnail(size, PILImage.ANTIALIAS)
o = cStringIO.StringIO()
image.save(o, "JPEG")
return o.getvalue()
@login_required(redirect_field_name='redirect_to')
def profile_update(request):
profile = request.user.get_profile()
...
if request.method == 'POST':
pform = ProfileForm(request.POST, request.FILES,
instance=profile)
else:
pform = ProfileForm(instance=profile)
if pform.is_valid()
new_profile = pform.save(commit=False)
if(pform.cleaned_data['picture']):
raw_image_data = pform.cleaned_data['picture'].read()
thumbnail_content = resize_image(raw_image_data)
filename = pform.cleaned_data['picture'].name
filename = os.path.splitext(filename)[0] + ".jpg"
new_profile.picture.save(filename, thumbnail_content)
new_profile.save()
traceback
=======
IOError at /profile/update
cannot identify image file
Traceback:
File "/usr/lib/python2.4/site-packages/django/core/handlers/base.py"
in get_response
86. response = callback(request, *callback_args,
**callback_kwargs)
File "/usr/lib/python2.4/site-packages/django/contrib/auth/
decorators.py" in __call__
67. return self.view_func(request, *args, **kwargs)
File "/var/mysite/views.py" in profile_update
705. thumbnail_content = resize_image
(raw_image_data)
File "/var/mysite/views.py" in resize_image
677. image = PILImage.open(f)
File "/usr/lib/python2.4/site-packages/PIL/Image.py" in open
1745. raise IOError("cannot identify image file")
Exception Type: IOError at /profile/update
Exception Value: cannot identify image file
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