how to implement google login in django

Question 1

Below is a basic implementation for google login in django. This is just for learning purpose.It would provide the steps of implementing google login.

This is login.html

<html>
<head>
    <title>Login Page</title>
</head>
<body>

<form action=/mylogin/ method = get>
    <input type="submit" value="Go to Google">
</form>

 </body>
</html>

The urlpatters in urls.py is as below

urlpatterns = patterns('',
    # Examples:
    # url(r'^$', 'juicy.views.home', name='home'),
    # url(r'^blog/', include('blog.urls')),
    url(r'^login/','juicy.views.login'),
    url(r'^loginverif/','juicy.views.loginverif'),
       url(r'^mylogin/',RedirectView.as_view(permanent=False,url="https://accounts.google.com/o/oauth2/auth?redirect_uri=http://localhost:8000/loginverif&response_type=code&client_id=XXXXXXXXX-o0ovvb6ihdc8asdcuuc3nib1e05l3rha.apps.googleusercontent.com&scope=https://www.googleapis.com/auth/plus.login")),

)

\mylogin\ basically redirects to https://accounts.google.com/o/oauth2/auth with required parameters

the results from google oauth is passed loginverif view. Below is the loginverif view.

def loginverif(request):
    if request.method =="GET":
        gcode = request.GET['code']
        client_id='XXXXXXX-o0ovvb6ihdc8asdcuuc3nib1e05l3rha.apps.googleusercontent.com'
        redirect_uri='http://localhost:8000/loginverif'
        grant_type='authorization_code'
        client_secret='XXXXXXXX'
        post_data = [('code',gcode),('client_id',client_id),('redirect_uri',redirect_uri),('grant_type',grant_type),('client_secret',client_secret)]     # a sequence of two element tuples
        result = urllib2.urlopen('https://accounts.google.com/o/oauth2/token', urllib.urlencode(post_data))
        content = result.read()
        dct = json.loads(content)
        access_token = dct['access_token']
        headers = { 'Authorization':'OAuth %s'% access_token }
        req = urllib2.Request('https://www.googleapis.com/plus/v1/people/me',  headers=headers)
        result2 = urllib2.urlopen(req)
        content = result2.read()
        dct = json.loads(content)
        person_dict = dict()
        person_dict['id'] = dct['id']
        person_dict['personname']=dct['displayName']
    return render_to_response('signedhome.html',{'dictionary':person_dict})

To get the complete understanding please go thru https://developers.google.com/accounts/docs/OAuth2Login#validatinganidtoken

&

https://developers.google.com/oauthplayground/

Hope this helps!

Question 2

You should use django-social-auth that will help you to achieve more.