class ImageUploadForm(forms.Form):
    url = forms.URLField(label='Ссылка', required=False)
    file_input = forms.FileField(label='Файл', required=False)
    #image_hash = forms.CharField(widget=forms.HiddenInput(), required=False)

    def clean(self):
        cleaned_data = super().clean()
        url = cleaned_data.get("url")
        file_input = cleaned_data.get("file_input")


        if url and file_input:
            raise forms.ValidationError('Выберите только один варинат')
        if url is '' and file_input is None:
            raise forms.ValidationError('Выберите хотя бы один вариант')

        return cleaned_data

    def clean_image_hash(self):
        data = self.cleaned_data['image_hash']
        print(self.file_input)
        instance = UploadedImage

        #raise forms.ValidationError("hash not unique"")

        return data