### Модель
class Image(models.Model):
    img = models.ImageField(upload_to='', verbose_name='Картинка', blank=True)

    def __str__(self):
        return str(self.img)

    def get_absolute_url(self):
        return reverse('view_image', kwargs={"pk": self.pk})

### Форма
class ImageForm(forms.ModelForm):
    class Meta:
        model = Image
        fields = '__all__'

### Вьюшка
class CreateImage(CreateView):
    form_class = ImageForm
    template_name = 'images/add_image.html'
    raise_exception = True