Reddit implements OAuth2 authentication workflow. To enable it, just follow:
Register an application at Reddit Preferences Apps
Fill the Consumer Key and Consumer Secret values in your settings:
SOCIAL_AUTH_REDDIT_KEY = ''
SOCIAL_AUTH_REDDIT_SECRET = ''
By default the token is not permanent, it will last an hour. To get a refresh token just define:
SOCIAL_AUTH_REDDIT_AUTH_EXTRA_ARGUMENTS = {'duration': 'permanent'}
This will store the refresh_token in UserSocialAuth.extra_data attribute, to refresh the access token just do:
from social.apps.django_app.utils import load_strategy
strategy = load_strategy(backend='reddit')
user = User.objects.get(pk=foo)
social = user.social_auth.filter(provider='reddit')[0]
social.refresh_token(strategy=strategy,
redirect_uri='http://localhost:8000/complete/reddit/')
Reddit requires redirect_uri when refreshing the token and it must be the same value used during the auth process.