Hi,
can any one help on this problem?
pic_file = os.path.join(settings.MEDIA_ROOT, 'signature
\invalid.png')
f = open(pic_file, 'r')
picture = InMemoryUploadedFile(
file=f,
field_name='image',
name='invalid_new.png',
content_type='image/png',
size=os.path.getsize(pic_file),
charset=None,
)
pic = DigitalSignaturePicture(kind=1, image=picture)
pic.save()
And i get this error:
Traceback (most recent call last):
File "D:\Workspace\yau\py\manage.py", line 11, in <module>
execute_manager(settings)
File "C:\Python25\lib\site-packages\django\core\management
\__init__.py", line 438, in execute_manager
utility.execute()
File "C:\Python25\lib\site-packages\django\core\management
\__init__.py", line 379, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Python25\lib\site-packages\django\core\management\base.py",
line 191, in run_from_argv
self.execute(*args, **options.__dict__)
File "C:\Python25\lib\site-packages\django\core\management\base.py",
line 218, in execute
output = self.handle(*args, **options)
File "C:\Python25\lib\site-packages\django\core\management\base.py",
line 347, in handle
return self.handle_noargs(**options)
File "D:\Workspace\yau\py\help\management\commands\helpupdate.py",
line 6, in handle_noargs
update_faq(silent=False)
File "D:\Workspace\yau\py\help\updater.py", line 321, in update
DigitalSignatureHelpUpdater(silent).update()
File "D:\Workspace\yau\py\help\updater.py", line 281, in update
pic.save()
File "D:\Workspace\yau\ext\imagekit\models.py", line 145, in save
self._pre_cache()
File "D:\Workspace\yau\ext\imagekit\models.py", line 110, in
_pre_cache
prop._create()
File "D:\Workspace\yau\ext\imagekit\specs.py", line 63, in _create
self._img, self._fmt = self.spec.process(Image.open(fp),
self._obj)
File "C:\Python25\Lib\site-packages\PIL\Image.py", line 1980, in
open
raise IOError("cannot identify image file")
IOError: cannot identify image file
Thanks a lot
Radovan
On 1. Dec., 13:32 h., Tom Evans <[email protected]> wrote:
> On Wed, Dec 1, 2010 at 12:23 PM, Andrew Marder
>
> <[email protected]> wrote:
> > I'm trying to add a bunch of files from disk into my django database.
> > Here's the helper function I've written so far:
>
> > def django_file(path, field_name, content_type):
> > # adapted from
> > here:http://groups.google.com/group/django-users/browse_thread/thread/834f...
> > from django.core.files.uploadedfile import InMemoryUploadedFile
> > f = open(path)
> > return InMemoryUploadedFile(
> > file=f,
> > field_name=field_name,
> > name=file.name,
>
> This should be 'f.name', not 'file.name'. file is a built in class in
> python, and file.name is a member of that class, not your file name.
>
> Cheers
>
> Tom
>
> > content_type=content_type,
> > size=os.path.getsize(path),
> > charset=None)
>
> > I'm calling it like so:
> > django_file("path-to-jpg-file", field_name="image",
> > content_type="image/jpeg")
>
> > Here's the error I'm getting:
> > Traceback (most recent call last):
> > File "<console>", line 1, in <module>
> > File "/home/amarder/Documents/nmis/odk_dropbox/views.py", line 49,
> > in import_instances_folder
> > f = django_file(xml_files[0], field_name="xml_file",
> > content_type="text/xml")
> > File "/home/amarder/Documents/nmis/odk_dropbox/views.py", line 70,
> > in django_file
> > charset=None)
> > File "/home/amarder/Documents/environments/nmis/lib/python2.6/site-
> > packages/django/core/files/uploadedfile.py", line 90, in __init__
> > super(InMemoryUploadedFile, self).__init__(file, name,
> > content_type, size, charset)
> > File "/home/amarder/Documents/environments/nmis/lib/python2.6/site-
> > packages/django/core/files/uploadedfile.py", line 30, in __init__
> > super(UploadedFile, self).__init__(file, name)
> > File "/home/amarder/Documents/environments/nmis/lib/python2.6/site-
> > packages/django/core/files/base.py", line 17, in __init__
> > self.name = name
> > File "/home/amarder/Documents/environments/nmis/lib/python2.6/site-
> > packages/django/core/files/uploadedfile.py", line 46, in _set_name
> > name = os.path.basename(name)
> > File "/home/amarder/Documents/environments/nmis/lib/python2.6/
> > posixpath.py", line 111, in basename
> > i = p.rfind('/') + 1
> > AttributeError: 'member_descriptor' object has no attribute 'rfind'
>
> > Any suggestions?
>
> > Andrew
>
> > On Nov 16, 4:36 pm, Mitch Anderson <[email protected]> wrote:
> >> On Tue, Nov 16, 2010 at 3:28 AM, Tom Evans <[email protected]>
> >> wrote:
> >> > Django doesn't want a python file or text for a django file field, it
> >> > wants a django.core.files.File. I find the easiest one to use is the
> >> > InMemoryUploadedFile. Here is a snippet I use for fetching an image
> >> > from the web, and creating a django.core.files.File object that can be
> >> > assigned to a FileField or ImageField on a model:
>
> >> > h = httplib2.Http()
> >> > req, content = h.request(uri)
> >> > if req['status'] != '200':
> >> > print u'Failed to fetch image from %s' % uri
> >> > return None
>
> >> > import cStringIO
> >> > from django.core.files.uploadedfile import InMemoryUploadedFile
> >> > out = cStringIO.StringIO()
> >> > out.write(content)
> >> > return InMemoryUploadedFile(
> >> > file=out,
> >> > field_name=field,
> >> > name=name,
> >> > content_type=req['content-type'],
> >> > size=out.tell(),
> >> > charset=None)
>
> >> > field should be the name of the field on the model, name should be the
> >> > file name of the resource.
>
> >> > There may be neater ways of doing this, but this keeps it in memory
> >> > until django saves it to the upload_to location specified on the
> >> > model, and avoids writing it to disk only for django to write it to
> >> > disk again.
>
> >> > Cheers
>
> >> > Tom
>
> >> Awesome that worked perfectly! Thanks Tom!
>
> > --
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