查找 GET 请求是否找不到资源的最简单方法

Question

在python-eve framework, what would be the easiest way to find in a post GET hook that the GET request failed to find any resources (for example, the given filtering parameters中没有匹配到任何资源)?

谢谢！

Answer 1

您应该能够阅读挂钩中的响应 header X-Total-Count。如果它的值为 0，那么它找不到任何资源。

要访问此值，调用类似于：

# Within run.py
app.on_fetched_resource_something += before_returning_something_items

# Within your hook module file
def before_returning_something_items(response):
    numRecs = int(response.headers.get("X-Total-Count"))
    if numRecs > 0:
        print "Found Something"
    else:
        print "Found Zilcho!"

Answer 2

由于 payload 是一个 Flask Response 对象，您可以利用它的特性。一种选择是简单地调查 _items 键，在收集端点上，returns 实际文档：

import json

def on_post_get(resoure, request, payload):
    # get the actual response json out of Flask Response
    json = json.loads(payload.get_data())

    documents = json['_items']
    assert(len(documents) == 0)

app = Eve()
app.on_post_GET += on_post_get

if __name__ == '__main__':
    app.run()

查找 GET 请求是否找不到资源的最简单方法

Easiest way to find if a GET request does not find a resource

python

eve