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

Question

In the 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 failed to match any resources)?

Thanks!

Answer 1

Since payload is a Flask Response object, you can take profit of its features. One option would be to simply investigate the _items key, which, on a collection endpoint, returns the actual documents:

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()