CODEWITHSUNDEEP
pythongoogle-app-enginefacebook-graph-apiurllib2
TimLeung
TimLeung

Reputation: 3479

Troubleshooting Facebook's graph.put_object that returns error 400

I am using Facebook Python's SDK along with Google App Engine, and making a call to do a checkin:

graph.put_object("me", "checkins", message="Hello, world", place="165039136840558", coordinates='{"latitude":"38.2454064", "longitude":"-122.0434404"}')

However, this throws an error 400 Bad Request and I don't seem to be able to try catch it so I can have the important information.

On a bad request, Facebook should return, an object like below which can help troubleshoot and address the issue, but I am not sure how I can retrieve this object:

{
   "error": {
    "type" : "OAuthException",
    "message" : "An active access token must be used to query information about the current user."
    }
   }

[Edit]

I am temporarily able to figure out the issue by: Logging the Post Data

logging.info("LOG" + str(post_data))

and then using a REST client like the extension for Firefox to make the request again. The response gives me the information I need to proceed. However, it would have been better if I can obtain the error messages within my app.

Upvotes: 0

Views: 1421

Answers (2)

NLF
NLF

Reputation: 101

I came across the same issue, and here is how to get that error message:

import urllib2

url='https://graph.facebook.com/me/?method=post' # this will 400 b/c it has no auth token.

try:
   resp = urllib2.urlopen(url)
except urllib2.HTTPError as e:
   error_reason = e.read()

Then you can use the json module to examine the JSON Facebook sends with an error:

json_error = json.loads(error_reason)

Make sure you use json.loads, since error_reason is a string

Upvotes: 1

Kyle Buser
Kyle Buser

Reputation: 363

Like the error says, you need to create and consume an access token: Here's some more info. Sorry I can't "comment" yet and am forced to answer. http://benbiddington.wordpress.com/2010/04/23/facebook-graph-api-getting-access-tokens/

Upvotes: 2

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