I'm building an iframe Facebook application and I want to set up a 'like gate' where a user has to like my page to continue past the opening of the application. (After they click like I allow them to click a 'continue' button using JavaScript).
Is there any way to detect if a visiting Facebook user has liked a page without first forcing them to authorize my application? I know I can query their likes using the graph api or fql but I'd like to avoid forcing them through the auth dialog for this one part of the app. The reason I ask is that I've seen some applications on Facebook that appear to allow this functionality.
For example, this page:
http://www.facebook.com/velcrobrand?sk=app_156218351098324
I don't have to authorize the facebook application but the page knows if I have liked it or not.
I've made some progress figuring this out.
http://www.chilipepperdesign.com/2011/02/15/reveal-fan-gate-like-gate-facebook-iframe-tab-tutorial-with-php
The method described in the above link only works if the page is loaded inside a tab of an application fan page and NOT the applications primary iframe page.
Here: 'pages' object is present
http://www.facebook.com/apps/application.php?id=249709505050393&sk=app_249709505050393
Here: 'pages' object is not present
http://apps.facebook.com/flipkey/
Not sure why this is but I think I have enough to move forwards and create my fan/like-gate.
Related
As part of a website that I am developing, I have a Like Gate Page that I want to use in order to force my site visitors to press the like button before they are redirected to the site homepage.
When a Liker visitor comes back for the LIKE Gate page he/she should be redirected automatically to the website homepage (he/she already pressed like).
Important:
The whole website including the Like Gate is not found in a Facebook App/Page Tab!
It is OK to ask the user to login before he/she can press the Like button.
Well, in your web page you could implement Facebook login and get user's permission to see his/her likes. Get said likes from Graph API, see if your page is in the list and depending on that, either show your web page, or redirect user to your facebook page. You will need user_likes permission for that.
By using Facebook Javascript SDK Methods FB.Event.subscribe, FB.getLoginStatus, FB.api, authResponse, pages.isFan, access.token and Javascript SDK and a little bit PHP SDK.
I saw one, almost perfect that can be site-integrated, fully-explained, and free in this blog: http://daneworx.blogspot.com/2014/02/how-to-force-users-to-like-your-page.html
I am looking for Like Button to be shown in my ios native app, users of that app have already connected to app via facebook account.
there are several questions related to Facebook Like Button on stackoverflow but those are not specific to authorized single facebook page of the app.
According to official doc of facebook, facebook pages can not be liked via built-in action o open graph api.
But want only one official facebook page of that app to be liked by user when he hits like button. i don't want user to navigate away from the app or login again in web view to like facebook page.
is it possible to like app's facebook page without promoting user to log in again in webveiw?
Edit
Findings
1. https://stackoverflow.com/a/5837036/1632984
2. Comment by wallacer
"the general consensus does seem to be that you can't like a page on behalf of the user, however I just had an ios game like a page on my behalf. Extreme Road Trip successfully manages to get you to like their own page. I wish I'd paid more attention when I did it now..." – wallacer
This still can't be done directly using the graph api ( to the best of my knowledge ). What you can do is open a webview to the page you want the user to like. If you're rewarding their liking your app or something, when they close the webview (you'll have to provide a close button), you can use the graph api to check whether they like your app page. As far as I can tell this is the best current solution - and seems to be the approach taken by mobile games.
That said, I haven't used Facebook SDK 3 yet, so there may be something in there that could help you.
It appears that Liking a page on behalf of a user is still impossible. I've glanced over the iOS SDK Reference, and it doesn't seem like there is a built in mechanism to like anything.
However, in reading one of the other posts you linked to, and remembering that Facebook opened up the Like open graph action so app developers could allow their users to like content generated by their application...I found this link about built-in-actions (likes).
According to that link, you can post Like actions to your users by POSTing to https://graph.facebook.com/<user_id>/og.likes with the POST params for object (the open graph object URL you want to like on behalf of the user in this case your page's url. eg. www.facebook.com/yourpage) and access_token (obviously, for your user).
I'm not totally convinced that will work; though it is conceivable. My second thought would be to create an Open Graph Object for your page, and have all your users like that. Though, that is a little less ideal, as it removes the possibility of people finding your Page while they're on Facebook and would require you to put a lot more effort into getting likes for the Page via your website, application, etc.
I hope that helps a bit, good luck.
I want my application to have two spare screens, one for the non Fan user (the ones that didn't press the button like) and one for the fans. How can I do that without asking the users to authorize my app? Do I have to use pages or page tabs first? or something else?
I tried with JS SDK and $_REQUEST["signed_request"] but there is no info if the user "likes" the app. I also tried FQL methods, but the most tables ask for the user_likes permission.
I'm totally lost with that and any help would be gratefull.
You can get this from the signed_request parameter, which is added to the request URL for your app on the page tab or canvas URL you provided. The signed_request param contains JSON data which includes the id of the page your app is installed on, and an additional liked field if the user has already liked the page. You can use this field to redirect users to the appropriate view for your app.
See the section labelled "Integrating with Facebook APIs" at https://developers.facebook.com/docs/appsonfacebook/pagetabs/ for more info.
I am a PHP developer, but completely new to this Facebook stuff and am getting all confused. The whole Apps vs Pages vs Fan Pages terminology is driving me nuts. Please help!
My client's requirements:
1) Display Like button on a single web page
2) When Like button is clicked, content on the page is unlocked and displayed (PHP)
3) Future visits to the page detects that visitor already likes the page, and content remains unlocked (PHP)
4) All updates to web page profile on FB will show on Likers' news feed
My understanding is that the cleanest way of doing (3) above is to use the PHP SDK. But to do this, I need to create an app (to get the App ID). So I created an App. I 'liked' the App from my FB profile. Updates to my app are posted to my news feed. So far, so good.
However when I try and implement the PHP SDK, it only works if I authorize the App to my account first. Is there a way of avoiding this authorization step just for a simple "Like" (I ask because I didn't have to authorize anything when liking the app within FB)? If this authorization is unavoidable, are there any alternatives to Apps that would allow me to achieve the above requirements?
Ideally, I'd like to use just "Pages" to do this, and not Apps, but I believe I cannot achieve (2) and (3) with pages, correct (remembering everything needs to be server side, so no JavaScript showing and hiding layers etc)?
I would be grateful for any guidance.
Thanks.
So I'm assuming what we are talking about here is a Facebook tab - the 520 pixel wide applications that can go in Fan pages?
If not, you will not be able to make this happen without permissions. It sounds like that is what you're talking about, though.
Here's an example of an Facebook tab on the Coca Cola fan page:
In a tab, the PHP SDK will tell you if the user is a fan of the page (not of the app, of the page). You'll need to read the signed request - there will be a parameter there called Page, which tells you if the user is already a fan (see https://developers.facebook.com/docs/authentication/signed_request/). You get this without having to authorize.
I usually read all this and store whether the user is a fan in a boolean variable. Then later in my page I'll do something like this:
<?php if ($isFan):?>
Content for fans here
<?php else:?>
Content for non-fans here
<?php endif;?>
Keep in mind that it is only telling you if the user is a fan OF THAT PAGE - if you set up your app on a test page, for instance, it'll tell you if the user is a fan of that test page or not, NOT if the user is a fan of your app.
In order to read what a facebook user likes using the PHP SDK, you will need the user_likes permission. You may however, be able to hack something together by rendering a like button on your page somewhere and detecting the color of the button, meaning the user has liked the page. This may be problematic because of cross domain issues considering the like button is rendered as an iframe.
Best of luck!
For some things, you need an app. Like restricting access to content if the user has "Liked" something. You need custom code to do that. You don't need an app for a basic "Like" button, but you really can't get any stats on the Likes. You can link an app to a website, so that you can report on the content and referrals. If you go to http://www.facebook.com/insights/ you can link the app with a website so the insights/reporting are combined. Just click on the "Insights for your Website" button. It does require validation.
That said, your confusion is the norm. Apps, Pages and Fan Pages are almost the same thing. They are all referenced through numerical ID. There are subtle feature differences between Pages and App Pages. An app can be added to any Page if it is configured to do so. But you can't add a Page to another Page.
You can use FQL to query if a user is a fan of your app, instead of the Page you are currently on.
Facebook controls what gets shown in the news feed. Just because you post to the feed, doesn't mean it will show. However, if you are an admin of the Page and/or App, posts will always show in your feed.
I can't seem to find exactly what I'm looking for. We're trying to build an app to run solely on a Facebook Page. We want to show a landing page if they don't Like the page, and the contest entry form if they do. This functionality works.
Before showing the contest entry form, we'd like to authenticate the user viewing the app so that they can just hit "Enter the contest!" and we can automatically pull a name/email address.
Any of the methods of authentication I've seen described, including through the Facebook Developer docs, don't work at all.
I saw something that said they need to interact with the app first, then you can get the id, but that doesn't work either. I also don't get the page id passed with the signed request.
Its also pretty unclear whether I should be using an iframe or just FBML.
Could anyone point me in the right direction, please? Thanks!
You need to create a fan page and add the FBML plugin to that page, then you will need to insert a short code that will determine if a facebook user has clicked 'Like' or not and by determining that you will decide weather to display the content of the landing page or not (using an iframe). You will probably like to also set the FBML box that you create as the default view for members who didn't press the 'Like' button yet, you can change the default view in your fan page settings.
On the iframe, you will need to use the Facebook API if you want to retrieve any user information from Facebook, for that, you will need to register a new application with Facebook. Go to developers.facebook.com for the API integration and app registration.
Also, what do you mean when you say:
Any of the methods of authentication
I've seen described, including through
the Facebook Developer docs, don't
work at all.
Well, it appears you can't do it that way. The client was very specific in wanting that functionality but we ended up convincing them to go for a redirect to the canvas page to have the app authorized and the contest entered instead.