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POImplementing Facebook logout functionality for Django App
 

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    <p>I have created a django app where users can be looged in with both django app username or facebook username. Now i want to implement a logout functionality while logging in through facebook . Can somebody help me to do this.Please help me to find any tutorials which explains these. I will paste my code here. </p> <p><strong>html facebook part</strong></p> <pre><code>{% load facebookconnect %} {% facebook_connect_login_button %} {% facebook_connect_script %} </code></pre> <p><strong>facebookconnect.py</strong></p> <pre><code>from django import template from django.conf import settings from django.core.urlresolvers import reverse register = template.Library() class FacebookScriptNode(template.Node): def render(self, context): return """ &lt;script src="http://static.ak.connect.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php" type="text/javascript"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript"&gt; FB.init("%s", "%s"); function facebook_onlogin() { var uid = FB.Facebook.apiClient.get_session().uid; var session_key = FB.Facebook.apiClient.get_session().session_key; var expires = FB.Facebook.apiClient.get_session().expires; var secret = FB.Facebook.apiClient.get_session().secret; var sig = FB.Facebook.apiClient.get_session().sig; fb_connect_ajax(expires, session_key, secret, uid, sig); } function fb_connect_ajax(expires, session_key, ss, user, sig) { var post_string = 'expires=' + expires; post_string = post_string + '&amp;session_key=' + session_key; post_string = post_string + '&amp;ss=' + ss; post_string = post_string + '&amp;user=' + user; post_string = post_string + '&amp;sig=' + sig; $.ajax({ type: "POST", url: "%s", data: post_string, success: function(msg) { window.location = '%s'; //.reload() } }); } &lt;/script&gt; """ % (settings.FACEBOOK_API_KEY, reverse('xd_receiver'), reverse('facebook_connect_ajax'), settings.LOGIN_REDIRECT_URL) def facebook_connect_script(parser, token): return FacebookScriptNode() register.tag(facebook_connect_script) class FacebookLoginNode(template.Node): def render(self, context): return "&lt;fb:login-button onlogin='facebook_onlogin();'&gt;&lt;/fb:login-button&gt;" #return "&lt;fb:login-button onclick="openPopup('https://graph.facebook.com/oauth/authorize?client_id=a0acfd122e64fc21cfa34d47369f0c97&amp;redirect_uri=http://mysite.com/mypage&amp;display=popup');"&gt;&lt;/fb:login-button&gt;" def facebook_connect_login_button(parser, token): return FacebookLoginNode() register.tag(facebook_connect_login_button) </code></pre> <p><strong>function in views.py</strong></p> <pre><code>def login_facebook_connect(request): status = 'unknown failure' try: expires = request.POST['expires'] ss = request.POST['ss'] session_key = request.POST['session_key'] user = request.POST['user'] sig = request.POST['sig'] pre_hash_string = "expires=%ssession_key=%sss=%suser=%s%s" % ( expires, session_key, ss, user, settings.FACEBOOK_APPLICATION_SECRET, ) post_hash_string = hashlib.new('md5') post_hash_string.update(pre_hash_string) if post_hash_string.hexdigest() == sig: try: fb = FacebookUser.objects.get(facebook_id=user) status = "logged in existing user" except FacebookUser.DoesNotExist: contrib_user = User() contrib_user.save() contrib_user.username = u"fbuser_%s" % contrib_user.id fb = FacebookUser() fb.facebook_id = user fb.contrib_user = contrib_user temp = hashlib.new('sha1') temp.update(str(datetime.datetime.now())) password = temp.hexdigest() contrib_user.set_password(password) fb.contrib_password = password fb.save() contrib_user.save() status = "created new user" authenticated_user = auth.authenticate( username=fb.contrib_user.username, password=fb.contrib_password) auth.login(request, authenticated_user) else: status = 'wrong hash sig' logging.debug("FBConnect: user %s with exit status %s" % (user, status)) except Exception, e: logging.debug("Exception thrown in the FBConnect ajax call: %s" % e) return HttpResponse("%s" % status) def xd_receiver(request): return render_to_response('xd_receiver.html') </code></pre>
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