def METHOD_NAME(self, org_id, image_file):
    obj = self.filter(org_id=org_id, key='org_logo_path').first()
    if obj and obj.value:  # delete old file
        _delete_org_logo_file(obj.value)
    if not obj:
        obj = self.model(org_id=org_id, key='org_logo_path')
    obj.value = _save_org_logo_file(org_id, image_file)
    obj.save()
    return obj