Flask-restless - 如何将DELETE请求转换为UPDATE

Question

将DELETE请求转换为UPDATE的正确方法是什么？

我正在做类似的事情：

api_manager.create_api(News,
                       methods=['GET', 'POST', 'DELETE', 'PUT'],
                       preprocessors={'DELETE': [pre_delete_news]})

def pre_delete_news(instance_id=None, **kw):
    # Set the deleted flag
    db.engine.execute("SET delete = True FROM news WHERE id = %d" % instance_id)
    # Block the DELETE request by raising an exception
    raise ProcessingException(description='Delete successfull', code=418)

这不是很干净，因为我引发异常以强制阻止删除请求。