I've put a Like Gate on a few of my Facebook Pages and I'm getting a lot of complaints saying that people can't access the content via their mobile device since the mobile version of the facebook website, and the facebook apps for ios/android, don't support tabs on Facebook.
I see there are services out there (I'm not sure how legit they are) that offer a way to create a mobile like gate for your page tab, but I can't find any documentation on how they do it. These services are not suitable for me, because the content on my tab is custom and dynamic.
So, how can I create a interstitial page for a mobile page that requires the visitor to have liked my Page on Facebook before they can proceed? This has to work for new users, as well as existing users who re-visit the tab and without requiring an install to an application.
Thanks!
One approach you can take for a mobile site is to check that the user has liked the page in question via the JS SDK.
If you have a logged-in user to your application, you can Subscribe to the authResponseChange FB event within your JS SDK initialization, or call a function directly to make an API request to verify if the user is a fan of your page.
In your initialization:
FB.init({appId: YOUR_FB_APP_ID_HERE });
window.fbAsyncInit = function() {
// React to a user clicking an on-page Like button:
FB.Event.subscribe("edge.create", verifyUserLikesPage);
}
You can verify that the user likes the appropriate page in the like handler:
function verifyUserLikesPage() {
FB.api("/me/likes/"+FBID_OF_PAGE_TO_ENSURE_THEY_LIKE, function(apiResponse){
if (apiResponse.data && apiResponse.data.length > 0)
// User likes the page. Enabled them to proceed
else
// User does not like the page. Require they click Like.
}
}
More information on the edge.create subscribe via JS available here: https://developers.facebook.com/docs/reference/javascript/FB.Event.subscribe/
Related
I tried googling & checking stackoverflow for the possible solution but haven't found any yet, so would like to bring it up here again.
I have a Facebook page, page has multiple tabs, and one of the tab has a Facebook App (accessed only through the tab, redirect the http://apps.facebook.com/myapp to the page tab)
I have some content (say non-fan content) to be displayed to the user before he likes the page.but, I don't have any way to check if the user has liked the page unless he adds the app & fb documentation has stuff that can give me the required like FQL page_fan, url_like, api(/me/likes/FACEBOOK_PAGE_ID) but each one of this needs an accesstoken (which I cannot get before the user adds the app).
some of the posts on stackover flow says that is not possible without getting the user to add the app. but there are apps like static html, static iframe & others which provides this functionality, how ?
Please advise.
Facebook will POST a signed_request to your server when the user opens the page tab.
This is what you get when you parse the signed_request:
{
"algorithm":"HMAC-SHA256",
"issued_at":1309468031,
"page":{
"id":"xxxxxxxxxxxxxxx",
"liked":true,"admin":true
},
"user":{"country":"fr","locale":"en_US","age":{"min":21}
}
The important part is "page.liked" where you see if the user likes the page.
No permissions and no app authorization is needed for this to work.
Search the web about parsing the signed_request in your favorite web programming language i.e. php.
I am hosting a Facebook app on Google app engine, I need to make sure the user is logged into facebook before anything.
What I can currently do is display facebook's log in button using fbxml, but I prefer the user would be redirected to Facebook's log in page if he wasn't logged in, then back to my app's main page, this way I can make sure that the user is logged in before doing anything.
I am new to Facebook apps, I read here that I can redirect the user to
https://www.facebook.com/dialog/oauth?client_id=YOUR_APP_ID&redirect_uri=YOUR_URL
in order to authenticate him. But using GAE's self.redirect(url) doesn't work, the page stays the same. I was hoping I could do something like this in my handler:
if u'signed_request' in self.request.POST:
facebook.load_signed_request(self.request.get('signed_request'))
if not facebook.user_id:
self.redirect("https://www.facebook.com/dialog/oauth?"+
"client_id={0}&redirect_uri={1}"
.format(FACEBOOK_APP_ID, EXTERNAL_HREF))
return
but as i said earlier this doesn't work.
I'm assuming by 'Facebook App' you mean a Canvas App - so something that will live at https://apps.facebook.com/YOUR_NAMESPACE from a user perspective?
If so, you'll need to add the redirect via Javascript using window.top, as your app is loaded in an iframe. See https://developers.facebook.com/docs/appsonfacebook/tutorial/ and search for 'top', then view the example toward the end of the page.
There are also good examples on the Php Sdk that facebook provides. I like the with_js_sdk.php example. It runs seamlessly and is good to follow.
https://github.com/facebook/php-sdk
http://developers.facebook.com/docs/reference/php/
I have a Facebook like button on the top of my page and on every product page. How I can find out, where and who clicked the like button (on which product, or on the top of the page?).
You can't because it's restriction of their privacy policy
I've never done anything like that myself, but it looks like you can use Javascript to fire off an event when a given button is clicked -- so you would assign each button on each page a unique identifier and send that back to the server on click. Relevant bits:
After you have obtained the application id you first of all have to add Facebook’s namespace to your html element on the website you wish to add the “Like” button to:
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml">
Then, on the actual page, you include:
window.fbAsyncInit = function() {
FB.init({appId: 'YOUR_FACEBOOK_APP_ID', status: true, cookie: true, xfbml: true});
FB.Event.subscribe('edge.create', function(href, widget) {
// Do something, e.g. track the click on the "Like" button here
alert('You just liked '+href);
});
};
The actual post has a bit more detail.
EDIT: As others have mentioned, this only covers which button is clicked, and not who has clicked it. In addition to being technically impossible and in violation of Facebook's privacy policy, tracking individual Facebook users on your site without their explicit permission is an unethical invasion of their privacy. Respect your users.
You cannot know your users' Facebook account, it goes against Facebook's privacy policy.
As for where on the page, use Javascript.
If a user has connected to the application the xfbml like button is configured to, then yes you can collect the information the user has shared with your application. You can not share the analytical type data though. For your use only.
As per http://developers.facebook.com/policy/ art. II sec. 2,3
** Storing and Using Data You Receive From Us**
You will only request the data you need to operate your application.
You may cache data you receive through use of the Facebook API in
order to improve your application’s user experience, but you should
try to keep the data up to date. This permission does not give you any
rights to such data.
But in art. I sec. 7
Special provisions for apps on Pages:
b. When a user visits your Page, if they have not given explicit
permission by authorizing your Facebook app or directly providing
information to your Page, you may only use information obtained
from us and the user's interaction with your Page in connection with
that Page. For example, although you may use aggregate analytics for
your individual Page, you must not combine information from any other
sources to customize the user's experience on your Page and may not
use any information about the user's interaction with your Page in
any other context (such as analytics or customization across other
Pages or websites).
Step 1
Create a Facebook Page, such as http://www.facebook.com/pages/SomethingFacebookUsersLike/
Step 2
Create a custom Facebook Like button configured for the above URL. Place the Like button on your Web page.
Step 3
Create an event handler for when a Facebook user clicks the like button...
FB.Event.subscribe("edge.create", function(targetUrl) {
// When the Facebook Like Button is clicked (Likejacked), kick off
// a request to the server immediately to see who just now "liked" the page.
// That person who clicked the like button is probably the same person.
dojo.xhrGet({
url : server_url + fb_page_id,
handleAs : "json",
load : function(response, ioArgs) {
// response should have the facebook user data
}
});
});
Step 4
Server-side process makes a request for the fan page of the Facebook Page...
https://www.facebook.com/browse/page_fans/?page_id=[insert_facebook_page_id]
Replace the page ID for the Facebook Page in the above URL. On that page, the top most Facebook user listed, which will include a link to their profile, is the person who most recently clicked the Like button. Visit users profile and screen scape whatever information is sought after. This information would include at least their "real name" and Facebook ID.
Longer technical explanation can be found here:
I Know Your Name, and Probably a Whole Lot More (Deanonymization via Likejacking, Followjacking, etc.)
http://blog.whitehatsec.com/i-know-your-name-and-probably-a-whole-lot-more-deanonymization-via-likejacking-followjacking-etc/
I am using an IFrame application with XFBML and the new Javascript API.
I'd like to have a facebook application with multiple entry points. These will most likely represent different links coming from a fan page tab.
I can do this quite easily if the pages don't require authentication - for instance I can create several pages under the app and if a new user comes I can send them to any page:
http://apps.facebook.com/myapp/offers
http://apps.facebook.com/myapp/game
http://apps.facebook.com/myapp/products
The problem is that if I need to have authentication then once the user is authenticated they get redirected to my default post-authorization url.
Is there a way for a user that comes to /game to stay on /game after they are authenticated without redirecting.
I thought I could do it with the AJAX login form - but I cannot find out how to do that in a Facebook IFrame application.
I think the example using requirelogin only works for FBML.
<a href="http://apps.facebook.com/mysmiley" requirelogin=1> Welcome to my app</a>.
Is there a way to accomplish this with Facebook APIs - or will I have to do some kind of clever cookie handling?
You can use the facebook connect JS library inside of an iframe app and then redirect them to the appropriate url in javascript if they click allow. Best to go to the Facebook dev docs on the Javascript SDK on Fb:login here: http://developers.facebook.com/docs/reference/javascript/
Basically if the login is successful, you will get a callback where you should redirect them in javascript by using window.top.location = 'yoururlhere';
I want to send Facebook friend invitations to some of our friends list without using FBML tags (<fb:request ....)
I am writing code in ASP.NET using fbServices.
How can I send friend requests without using FMBL tags?
Friend requests cannot be done through the Facebook API. The FBML fb:request-form tag is the only way to do this.
I spent a great deal of time looking, and finally came accross a very simple solution.
Using the Facebook Javascript API you can do a friend request with:
<script>
FB.ui(
{
method: 'friends.add',
id: fbid // assuming you set this variable previously...
},
function(param){
console.log(param);
// If they cancel params will show:
// {action:false, ...}
// and if they send the friend request it'll have:
// {action:true, ...}
// and if they closed the pop-up window then:
// param is undefined
}
);
</script>
The callback script can then simply performs an ajax call to your server where
you save info about the action, if needed.
You can test this by using the javascript console app on Facebook:
http://developers.facebook.com/tools/console
Paste in the script above, including the tags, or click the "Examples"
button on the bottom of the text area and find the "fb.ui — friends.add" example.
fb:request-form is now obsolete and will be deprecated eventually. The new way, announced on 27 January 2011, is the Requests Dialog.
Facebook does not allow you to programatically send friend requests.
I suggest taking a look at their API
Okay. Years later, things has changed:
https://developers.facebook.com/docs/reference/dialogs/
Dialogs provide a simple, consistent interface to provide social
functionality to your users. Dialogs do not require any additional
permissions because they require user interaction. Dialogs can be used
by your application in every context: within a Canvas Page, in a Page
Tab, in a website or mobile web app, and within native iOS and native
Android applications.
There are currently 7 Dialogs available for you to use:
- The Feed Dialog allows a user to post a story to their Timeline and to their friends' News Feeds
- The OAuth Dialog allows a user to authorize an application as part of an authentication flow.
- The Add Page Tab Dialog allows a user to add an application to a Facebook Page which they administer.
- The Friends Dialog allows a user to send a friend request to another user.
- The Pay Dialog allows a user to make a purchase using Facebook Credits.
- The Requests Dialog allows a user to send a request to one or more of their friends
- The Send Dialog allows a user to send a Facebook Message to one or more of their friends.
See also: https://developers.facebook.com/docs/requests/
You can send requests to friends without using FBML as follows
`FB.ui({
method: 'apprequests',
message: 'This is my applicaiton',
title: 'Application Request without FBML',
filters: 'all'
},
// Callback function returning the list of requestObj Ids
function(response){
}
);`
For more info you could refer
Wiki Page for apprequest graph API