PUT request made with Python requests module has no data

Question

I am developing an Python REST api and for server side I'm using Django with django-rest-framework. I managed to successfully test my api with AdvancedRestClient in chrome, but I can't get it working with python requests.

My ARC request looks like this:

And for my test Python request I wrote the following code:

import requests
import json

payload = {"TimeStamp": "2016-02-07T13:38:16Z", "DateInserted": "2016-02-07T13:38:18Z", "Value": 17.145, "Sensor": 1}
url = "http://127.0.0.1:8000/api/Readings"
headers = {"Content-Type": "application/json", "Authorization": "966271f8-94a3-4232-95f7-953f3b7989f3"}
r = requests.put(url, data=json.dumps(payload), headers=headers)

I tried many different things as using json= instead of data= but my request always seem to have no data content when they arrive to my server side. I searched the web but couldn't find any viable examples of using POST with requests so I'm hoping someone has some first-hand experience in their sleeve to share with me.

Update: The following code now works with django-rest-framework.

payload = {"TimeStamp": "2016-02-07T13:38:16Z", "DateInserted": "2016-02-07T13:38:18Z", "Value": 12.123, "Sensor": 1}
url = "http://127.0.0.1:8000/api/Readings/"
headers = {"Content-Type": "application/json", "Authorization": "966271f8-94a3-4232-95f7-953f3b7989f3"}
r = requests.put(url, data=json.dumps(payload), headers=headers)

Your request looks correct to me. Try using http://httpbin.org/put to see what you are actually sending. — Martijn Pieters
– Martijn Pieters, Commented Feb 7, 2016 at 17:12
Can you add Token before your token? " Token '966271f8-94a3-4232-95f7-953f3b7989f3'" — Cagatay Barin
– Cagatay Barin, Commented Feb 7, 2016 at 17:15
Please add print json.dumps(json.loads(r.text), indent=4) and print r.status_code to your snipplet and report the result. (Also add the Token in the Authorization header.) — flaschbier
– flaschbier, Commented Feb 7, 2016 at 17:37
I'm using my own custom Authorization so Token in not needed. I managed to get it working please see comment below. — Denis Vitez
– Denis Vitez, Commented Feb 8, 2016 at 15:59

djq · Accepted Answer · 2016-02-08 16:03:02Z

1

DRF has a trailing space by default. Instead of http://127.0.0.1:8000/api/Readings it should probably be http://127.0.0.1:8000/api/Readings/ . I would suggest making Readingsbe lowercase as it's easy to forget that it's capitalized

The general structure for API tests that I've used is this:

from django.core.urlresolvers import reverse

from rest_framework.test import APITestCase, APIClient

class TestReadings(APITestCase):

    def setUp(self):
        self.client = APIClient()

    def test_put(self):

        url = reverse('readings', kwargs={}) # 'readings' here is the named url
        request = self.client.post(url, data={})

edited Feb 8, 2016 at 16:03

answered Feb 7, 2016 at 17:15

djq

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1 Comment

Denis Vitez Over a year ago

I managed to get it working. In order to do so I had to change two things. When I added / to Readings I started to see data coming through but the format was not correct. So the second thing I had to change was to put data= instead of json=. Thank you all for your help.

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