how to get user email with python social auth with facebook and save it

Question

I'm trying to implement python-social-auth in django.

I want users to authenticate through facebook and save their email.

I'm able to authenticate users but the extended permission for email is not showing up in the facebook authentification box and it's not storing the email in the database.

In settings.py I have the follwoing:

SOCIAL_AUTH_FACEBOOK_KEY='xxx'
SOCIAL_AUTH_FACEBOOK_SECRET='xxx'
FACEBOOK_EXTENDED_PERMISSIONS = ['email']

AUTHENTICATION_BACKENDS = (
    'social.backends.facebook.FacebookOAuth2',
    'social.backends.email.EmailAuth',
    'django.contrib.auth.backends.ModelBackend',
)

LOGIN_URL = '/login/'
LOGIN_REDIRECT_URL = '/done/'
LOGOUT_REDIRECT_URL = '/'
URL_PATH = ''
SOCIAL_AUTH_STRATEGY = 'social.strategies.django_strategy.DjangoStrategy'
SOCIAL_AUTH_STORAGE = 'social.apps.django_app.default.models.DjangoStorage'

SOCIAL_AUTH_PIPELINE = (
    'social.pipeline.social_auth.social_details',
    'social.pipeline.social_auth.social_uid',
    'social.pipeline.social_auth.auth_allowed',
    'social.pipeline.social_auth.social_user',
    'social.pipeline.user.get_username',
    'social.pipeline.social_auth.associate_by_email',
    # 'users.pipeline.require_email',
    'social.pipeline.mail.mail_validation',
    'social.pipeline.user.create_user',
    'social.pipeline.social_auth.associate_user',
    'social.pipeline.social_auth.load_extra_data',
    'social.pipeline.user.user_details'
)

The facebook dialog box...

How can I solve this?

Answer 1

After some changes in Facebook Login API - Facebook's Graph API v2.4 You will have to add these lines to fetch email

SOCIAL_AUTH_FACEBOOK_SCOPE = ['email']
SOCIAL_AUTH_FACEBOOK_PROFILE_EXTRA_PARAMS = {
    'fields': 'id,name,email', 
}

Answer 2

I think the problem is using FACEBOOK_EXTENDED_PERMISSIONS.

According to http://python-social-auth.readthedocs.org/en/latest/backends/facebook.html#oauth2 you should use:

SOCIAL_AUTH_FACEBOOK_SCOPE = ['email']