#28325: ImageFile extesion validation fails with: AttributeError: 'list' object 
has
no attribute 'name'
-------------------------------------------------+------------------------
               Reporter:  Maximilian Kindshofer  |          Owner:  nobody
                   Type:  Bug                    |         Status:  new
              Component:  File uploads/storage   |        Version:  1.11
               Severity:  Normal                 |       Keywords:
           Triage Stage:  Unreviewed             |      Has patch:  0
    Needs documentation:  0                      |    Needs tests:  0
Patch needs improvement:  0                      |  Easy pickings:  0
                  UI/UX:  0                      |
-------------------------------------------------+------------------------
 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)>
 ]

--
Ticket URL: <https://code.djangoproject.com/ticket/28325>
Django <https://code.djangoproject.com/>
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