forms.py

class UploadTestForm(forms.Form):
    file = forms.FileField()

models.py

def generate_filename(instance, filename):
    """
    Generates a folder path that sections files based upon who owns it.
    """
    def get_directory_name():
        return os.path.normpath(force_text(force_str(
            '.files/%s' % instance.owner_id
        )))

    def get_filename():
        storage = instance.file_path.storage
        return os.path.normpath(storage.get_valid_name(os.path.basename(
            filename.lower()
        )))

    return os.path.join(get_directory_name(), get_filename())


@python_2_unicode_compatible
class File(models.Model):
    owner = models.ForeignKey(settings.AUTH_USER_MODEL)
    group = models.ForeignKey('auth.Group', blank=True, null=True)
    file_path = models.FileField(_('file'), upload_to=generate_filename)
    file_name = models.CharField(_('file name'), max_length=255)
    date_created = models.DateTimeField(_('date created'), default=timezone.now)
    date_modified = models.DateTimeField(_('date modified'), default=timezone.now)

    class Meta:
        verbose_name = _('file')
        verbose_name_plural = _('files')

    def __str__(self):
        return self.file_name

views.py

class UploadTestView(LoginRequiredMixin, FormView):
    template_name = 'upload_test.html'
    form_class = UploadTestForm
    success_url = reverse_lazy('upload-test')

    def form_valid(self, form):
        fp = form.cleaned_data['file']
        file, created = File.objects.get_or_create(
            owner=self.request.user, file_name__iexact=fp.name,
            defaults={'file_path': fp})

        return super(UploadTestView, self).form_valid(form)