How To Retrieve Facebook Extra Info From Django?

To specify to which fields we need to have access, we need to add them to SOCIAL_AUTH_FACEBOOK_SCOPE list in settings.py file:

SOCIAL_AUTH_FACEBOOK_SCOPE = [
    'email',
    'user_friends',
    'friends_location',
]

So when a user will try to log in to our website using his Facebook account, he will be asked if our application can access his personal data.

In our case the app will ask him for his email, list of his friends and their location.

If the user agrees, python-social-auth will create an instance of SocialUser class. While accessing extra_data JSON, we can get a Facebook token that will allow us to get the extra information we need via Facebook API.

Firstly, we get a SocialUser object:

<pre lang="python">social_user = request.user.social_auth.filter(<br/> provider='facebook',<br/>).first()<br/></pre>

Since we got it, we can send a GET request to Facebook API, passing the user’s uid, access token and a list of fields we aim for:

if social_user:
    url = u'<a href="https://graph.facebook.com/{0}/'">https://graph.facebook.com/{0}/'</a> \
          u'friends?fields=id,name,location,picture' \
          u'&access;_token={1}'.format(
            social_user.uid,
            social_user.extra_data['access_token'],
          )
    request = urllib2.Request(url)

The API returns us a JSON with the data we requested:

{
   "data":[
      {
         "id":"uid",
         "name":"John Doe",
         "location":{
            "id":"id",
            "name":"Bogotá, Colombia"
         },
         "picture":{
            "data":{
               "url":"avatar url",
               "is_silhouette":false
            }
         }
      }
   ]
}

So now we can load it to a Python dictionary:

friends = json.loads(urllib2.urlopen(request).read()).get('data')
  for friend in friends:
    location = friend.get('location')
      # do something