Django models: 'ModelFormOptions' object has no attribute 'private_fields' - python-3.x

Question

Even though in the class based view fields = '__all__'. I'm still getting this error
FULL CODE
forms.py
class UploadAlbum(forms.ModelForm):
musicFiles = forms.FileField(widget=forms.ClearableFileInput(attrs={'multiple': True}))
class Meta:
model = Album
exclude = ('music','date',)
views.py
class Rcollection(LoginRequiredMixin,CreateView):
model = UploadAlbum
template_name = 'release/collection.html'
fields = '__all__'
def form_valid(self, form):
# This method is called when valid form data has been POSTed.
# It should return an HttpResponse.
print(form)
return super(Rcollection, self).form_valid(form)
FULL STACKTRACE
kingsley#Number2-Ubuntu:~/Documents/RedRiver$ python3 manage.py runserver
Watching for file changes with StatReloader
Performing system checks...
System check identified no issues (0 silenced).
July 11, 2020 - 15:43:21
Django version 3.0.7, using settings 'RedRiver.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.
Internal Server Error: /app/creator/release/rcollection/
Traceback (most recent call last):
File "/home/kingsley/.local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 34, in inner
response = get_response(request)
File "/home/kingsley/.local/lib/python3.6/site-packages/django/core/handlers/base.py", line 115, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/home/kingsley/.local/lib/python3.6/site-packages/django/core/handlers/base.py", line 113, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/kingsley/.local/lib/python3.6/site-packages/django/views/generic/base.py", line 71, in view
return self.dispatch(request, *args, **kwargs)
File "/home/kingsley/.local/lib/python3.6/site-packages/django/contrib/auth/mixins.py", line 52, in dispatch
return super().dispatch(request, *args, **kwargs)
File "/home/kingsley/.local/lib/python3.6/site-packages/django/views/generic/base.py", line 97, in dispatch
return handler(request, *args, **kwargs)
File "/home/kingsley/.local/lib/python3.6/site-packages/django/views/generic/edit.py", line 168, in get
return super().get(request, *args, **kwargs)
File "/home/kingsley/.local/lib/python3.6/site-packages/django/views/generic/edit.py", line 133, in get
return self.render_to_response(self.get_context_data())
File "/home/kingsley/.local/lib/python3.6/site-packages/django/views/generic/edit.py", line 66, in get_context_data
kwargs['form'] = self.get_form()
File "/home/kingsley/.local/lib/python3.6/site-packages/django/views/generic/edit.py", line 32, in get_form
form_class = self.get_form_class()
File "/home/kingsley/.local/lib/python3.6/site-packages/django/views/generic/edit.py", line 101, in get_form_class
return model_forms.modelform_factory(model, fields=self.fields)
File "/home/kingsley/.local/lib/python3.6/site-packages/django/forms/models.py", line 554, in modelform_factory
return type(form)(class_name, (form,), form_class_attrs)
File "/home/kingsley/.local/lib/python3.6/site-packages/django/forms/models.py", line 257, in __new__
apply_limit_choices_to=False,
File "/home/kingsley/.local/lib/python3.6/site-packages/django/forms/models.py", line 144, in fields_for_model
sortable_private_fields = [f for f in opts.private_fields if isinstance(f, ModelField)]
AttributeError: 'ModelFormOptions' object has no attribute 'private_fields'
[11/Jul/2020 15:43:26] "GET /app/creator/release/rcollection/ HTTP/1.1" 500 119649

Answer 1

Maybe you forgot to specify the form attribute in the Rcollection.
form_class = UploadAlbum
And you have to change the model value to Album.
model = Album

Answer 2

form_class= UploadAlbum
remove fields = 'all'