Super basic google oauth login /w email using sanction

views.py

from django import http
from django.core.urlresolvers import reverse
from django.views.generic.base import TemplateView

from sanction.client import Client

class MainView(TemplateView):

    def dispatch(self, request, *args, **kwargs):
        if not request.session.get('email'):
            return self.use_oauth(request)

        return super(MainView, self).dispatch(request, *args, **kwargs)

    def use_oauth(self, request):
        c = Client(auth_endpoint='https://accounts.google.com/o/oauth2/auth',
            client_id=settings.OAUTH2['client_id'],
            redirect_uri=request.build_absolute_uri(reverse('oauth')))

        request.session['email'] = None
        request.session['access_token'] = None
        return http.HttpResponseRedirect(
                c.auth_uri(
                    scope=settings.OAUTH2['scopes'],
                    access_type='offline'))

class GoogleAuthView(TemplateView):

    def get(self, request):
        c = Client(token_endpoint='https://accounts.google.com/o/oauth2/token',
            resource_endpoint='https://www.googleapis.com/oauth2/v1',
            redirect_uri=request.build_absolute_uri(reverse('oauth')),
            client_id=settings.OAUTH2['client_id'],
            client_secret=settings.OAUTH2['client_secret'],
            token_transport='headers')

        c.request_token(code=request.GET.get('code'))
        # as format: {'verified_email': True, 'id': '123', 'email': '[email protected]'}
        data = c.request('/userinfo')
        request.session['email'] = data.get('email', None)
        request.session['access_token'] = c.access_token
        return http.HttpResponseRedirect('/') 

class GoogleLogoutView(TemplateView):

    def get(self, request):
        old_token = request.session.get('access_token')
        if old_token:
            requests.get('https://accounts.google.com/o/oauth2/revoke?token=%s' % old_token)
        request.session['email'] = None
        request.session['access_token'] = None
        request.session.save()
        return http.HttpResponseRedirect('/')

lawl