Django + Foursquare OAuth +用戶登錄

Question

我已經看過關於谷歌和stackoverflow這個主題的一些其他問題，但似乎無法找到正確的解決方案。我正嘗試使用四方認證用戶的應用程序。當用戶使用foursquare登錄時，我想以數據庫中的用戶身份創建並存儲他們的一些信息。這一切工作正常。同時，我想以經過身份驗證的用戶身份登錄。這是我遇到麻煩的地方。我的看法是這樣的：

def foursq_done(request): 
# get the access_token 
access_token = request.session.get('access_token') 
print access_token 

# request user details from foursquare 
params = {'oauth_token': access_token} 
data = urllib.urlencode(params) 
url = 'https://api.foursquare.com/v2/users/self' 
full_url = url + '?' + data 
print full_url 
response = urllib2.urlopen(full_url) 
response = response.read() 
user_data = json.loads(response)['response']['user'] 
name = user_data['firstName'] 

try: 
    user = User.objects.get(username=user_data['contact']['email']) 
except User.DoesNotExist: 
    # Save information on user 
    user = User.objects.create_user(username=user_data['contact']['email'], 
     first_name=user_data['firstName'], last_name=user_data['lastName'], 
     email=user_data['contact']['email'], password=access_token) 
    profile = Profile() 
    profile.user = user 
    profile.oauth_token = access_token 
    profile.save() 

user = authenticate(username=user_data['contact']['email'], password=access_token) 

login(request, user) 

# show the page with the user's name to show they've logged in 
return TemplateResponse(request, 'foursq_auth/foursq_welcome.html', {'name': name} 

這是相同的登錄過程之前創建時，Django的用戶，像這種觀點我用：

def user_signup(request): 
if request.method == 'POST': 
    form = forms.UserSignupForm(data=request.POST) 
    if form.is_valid(): 
     user = form.save() 
     g = Group.objects.get(name='test_group') 
     g.user_set.add(user) 
     # log user in 
     username = form.cleaned_data['username'] 
     password = form.cleaned_data['password1'] 
     user = authenticate(username=username, password=password) 
     login(request, user) 
     messages.success(request, u'Welcome to Social FollowUp') 
     return redirect('user_create') 
else: 
    form = forms.UserSignupForm() 
return TemplateResponse(request, 'user_signup.html', { 
    'form': form, 
}) 

我想用我的foursquare登錄相同的結果進程 - 用戶通過身份驗證並登錄/識別爲Django用戶。相反，我總是看到這樣的錯誤：

Internal Server Error: /tattoo/foursquare/done/ 
Traceback (most recent call last): 
File "/Users/triplec1988/projects/tattoo/venv/lib/python2.7/site-  packages/django/core/handlers/base.py", line 115, in get_response 
    response = callback(request, *callback_args, **callback_kwargs) 
File "/Users/triplec1988/projects/tattoo/tatt2me/web_tatt2me/views.py", line 106, in foursq_done 
login(request, user) 
File "/Users/triplec1988/projects/tattoo/venv/lib/python2.7/site-packages/django/contrib/auth/__init__.py", line 92, in login 
request.session[BACKEND_SESSION_KEY] = user.backend 
File "/Users/triplec1988/projects/tattoo/venv/lib/python2.7/site-packages/django/utils/functional.py", line 203, in inner 
return func(self._wrapped, *args) 
AttributeError: 'AnonymousUser' object has no attribute 'backend' 

我不希望四方用戶是一個AnonymousUser，但很明顯，當我運行驗證（）有什麼不工作。我究竟做錯了什麼？

Answer 1

現在它只檢查標準的Django後端，但是你必須編寫一個自定義的接受用戶通過foursquare的OAuth驗證並驗證它們通過Django用戶認證模型。

在settings.py

AUTHENTICATION_BACKENDS = ('django.contrib.auth.backends.ModelBackend', 
          'YOUR_APP.backends.FoursquareBackend',) 

backends.py

from django.contrib.auth.models import User 
from django.contrib.auth.backends import ModelBackend 


class FoursquareBackend(ModelBackend): 
    def authenticate(self, username=None, password=None): 
     try: 
      user = User.objects.get(username=username) 
      return user 
     except User.DoesNotExist: 
      print "Looks like this user does not exist" 
     return None 

    def get_user(self, user_id): 
     try: 
      return User.objects.get(pk=user_id) 
     except User.DoesNotExist: 
      return None 

Answer 2

我想通了這不工作的原因是因爲我沒有自定義後端設置。我寫了一個Gist描述我是如何做到這一點的，並將其設置在這裏：https://gist.github.com/triplec1988/5891167