id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
28325	ImageFile extesion validation fails with: AttributeError: 'list' object has no attribute 'name'	Maximilian Kindshofer	nobody	"I upgraded from 1.11 from 1.10 and I get following error

AttributeError: 'list' object has no attribute 'name'
  File ""django/core/handlers/exception.py"", line 41, in inner
    response = get_response(request)
  File ""django/core/handlers/base.py"", line 249, in _legacy_get_response
    response = self._get_response(request)
  File ""django/core/handlers/base.py"", line 187, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File ""django/core/handlers/base.py"", line 185, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File ""auftragsverwaltung/views.py"", line 292, in bilddokumentation_form
    if formset.is_valid():
  File ""django/forms/formsets.py"", line 321, in is_valid
    self.errors
  File ""django/forms/formsets.py"", line 295, in errors
    self.full_clean()
  File ""django/forms/formsets.py"", line 348, in full_clean
    self._errors.append(form.errors)
  File ""django/forms/forms.py"", line 175, in errors
    self.full_clean()
  File ""django/forms/forms.py"", line 386, in full_clean
    self._post_clean()
  File ""django/forms/models.py"", line 396, in _post_clean
    self.instance.full_clean(exclude=exclude, validate_unique=False)
  File ""django/db/models/base.py"", line 1226, in full_clean
    self.clean_fields(exclude=exclude)
  File ""django/db/models/base.py"", line 1268, in clean_fields
    setattr(self, f.attname, f.clean(raw_value, self))
  File ""django/db/models/fields/__init__.py"", line 603, in clean
    self.run_validators(value)
  File ""django/db/models/fields/__init__.py"", line 555, in run_validators
    v(value)
  File ""django/core/validators.py"", line 476, in __call__
    extension = os.path.splitext(value.name)[1][1:].lower()

self:	
<django.core.validators.FileExtensionValidator object at 0x7fee879c6828>
value:	
[
<InMemoryUploadedFile: 20170619_150207.jpg (image/jpeg)>
]"	Bug	new	File uploads/storage	1.11	Normal				Unreviewed	0	0	0	0	0	0