I want to create a simple facebook page tab. Where i want that, if a user install this app to a page the page id will be stored in my database. Then i will show different content for individual fb pages. I read some documents where it is mentioned that signed_request could be used to get the page id. but signed request it received after the page is loaded into some fb page.
As anyone can install my app it is not possible to know who is going to install the next. but i have a plan to show different pages(from my server) in different page (in Facebook) tabs.
Just noticed that it is now an array, named tabs_added . The key of the array is the page ID and the valude is 1 (true) for tabs added. This would give you the idea that the other page ID keys would be in the array with 0 (false), but they are not passed.
<?
// grab all keys in an array
$aKeys = array_keys($_REQUEST['tabs_added']);
// take the first key - this is one of the page ID's the tab was added to
$sFirstKey = array_shift($aKeys);
?>
Courtesy dk1, precisely $_REQUEST['fb_page_id'] made it work.
Facebook will call your Application URL when someone is installing you app as a page tab. Do there some $_REQUEST logging to find out which params Facebook is sending in that case. There is one value that identifies the page where the application got added.
I've done this already but have no sample code here atm to show you.
Related
I have this HTML on this URL: https://myapp.herokuapp.com
<html>
<body>
<iframe frameborder=0 border=0 scrolling="no" src="<?php echo $_GET['url']; ?>" width="760px" height="521px"></iframe>
</body>
</html>
I have created a Facebook Page Tab and I want that anyone can install it on their Facebook Page with a different URL. So when you click on the tab on FB Page 1 it would display embedded URL1, FB Page 2 would display URL2, and so on. The URL is, then, a parameter when you install the Page Tab.
I have tried this:
https://www.facebook.com/dialog/pagetab?app_id=XXXXXXXXXX&next=https://myapp.herokuapp.com?url=HERE_YOUR_URL
It is installing the app, but seems that the URL parameter in the iframe is null. What am I doing wrong?
Thanks
My approach is a little different.
While it may not be possible to install Apps with URL parameters, you could adjust their content depending on which Page loaded them in the first place. As the Page Tab Facebook API Integration Tutorial states:
When a user selects your Page Tab, you will receive the signed_request
parameter with one additional parameter, page. This parameter contains
a JSON object with an id (the page id of the current page) (SOURCE)
So you would install the same App on several pages, and use the following code at the top (after you've created the $facebook object):
$page_id = "";
$sr = $facebook->getSignedRequest();
if($page = $sr['page']) {
$page_id = $page['id'];
}
You should now be able to use $page_id as the unique identifier telling you which page the user is currently viewing the application from, instead of a $_GET variable. Switch statements or a database integration are the first methods that come to mind, but you seem to be asking how to identify and retrieve a unique parameter and not how to use it, so I'm sure you will figure this out on your own. :)
Note: This (obviously) will not work on an app being installed on several Page Tabs of the same page, but that doesn't seem to be a concern of yours.
From my understanding it's not possible to have on app installed in separate Page tabs. You'll need to create different apps for that, but you can use use the same "base app" location and augment the location with your desired parameters.
For example:
You create two apps with "Page Tab" as platform.
For the first app, specify a Page Tab URL https://myapp.herokuapp.com/index.php?test=1
For the first app, specify a Page Tab URL https://myapp.herokuapp.com/index.php?test=2
Create an index.php in your apps base folder:
<? echo $_GET["test"]; ?>
Add both Page Tab apps to a Page (or separate Pages). See: https://developers.facebook.com/docs/graph-api/reference/v2.0/page/tabs/#publish or https://developers.facebook.com/docs/reference/dialogs/add_to_page/
Open first Page Tab, then second, and see that diffent parameter results are shown
Salon owners can create an account with their salon information on our platform and they get a page that they can use as a tab app.
I want to be able to serve all these pages from one app instead of having to install each one seprately and I also want to make the life of the salon owner easier by helping them to install the tab.
I know about the link I can create to help them install the app and I know that when a visitor visits the app that facebook will send the page ID. So far so good.
https://developers.facebook.com/docs/appsonfacebook/pagetabs/
But how do I make sure that when the salonowner follows the link to install the app that I get the page ID back (through callback or other) so that I can register which page ID belongs to which salon account.
I've read sone 2011 article about a callback but I can't find any recent info on this.
I think it should be possible as a lot of sites offer easy fb apps to businesses.
Any help would be welcome!
EDIT: Could this last piece of info in the Facebook link above be used to do this? I don't quite get it yet.
In addition, your app will also receive a string parameter called app_data as part of signed_request if an app_data parameter was set in the original query string in the URL your tab is loaded on. It could look like this: "https://www.facebook.com/YourPage?v=app_1234567890&app_data=any_string_here". You can use that to customize the content you render if you control the generation of the link.
Well... Preventing users from adding your application to their page is impossible. You can't prevent that.
What you will be able to do is to detect who has added your application and according to that, change the content (or not display it at all). So you'll have to start with a list of "allowed" page_ids to match to the accounts you want.
Your application will receive a signed_request each time a user arrives at your application (within a page). Inside that signed_request is information not only on the user but also on the page that the application is on (provided it is a page tab app).
Once you have obtained the signed_request, it will hold a page key which contains:
A JSON object containing the page id string, the liked boolean (set to
true if the user has liked the page, false if not) and the admin
boolean (set to true if the user is an admin of the page, false if
they're not). This field is only present if your app is being loaded
within a Page Tab.
So you'll be able to access the page_id from within this variable and make a decision on the type of content you want to be displayed.
Ok, after running some tests I found out that when you add a URL as 'next' parameter to the install URL Facebook will send the admin(user) back to this URL while adding an array to the request containing all the page Id's the app was installed to.
Like this: YOUR_CALLBACK_URL?tabs_added[ID]=1
Proved to be quite easy in the end
I would like to build a customized Facebook page tab for other page owners to instal onto their Facebook pages. Each page tab will need to have its own ID in the links that lead out of the page tab in order for us to track that page activity.
For example each page tab will have a list of products that link to the relevant product pages on an external website. Each of those links will have a unique ID parameter to we can track clicks and purchases. [e.g http://www.mydomain.com/products/product123.aspx?userid=12345]
So I need to create the userid variable in the link. Possibly using GET (or Request.QueryString for asp) to receive from the initial page tab installation.
From what i can see I might be able to use the app_data parameter to pass data over to the page, but when i tried it, it didn't work.
This is what i am using to install the page tabs
[https://www.facebook.com/dialog/pagetab?app_id=YOUR_APP_ID&app_data=12345]
I thought that this will pass the userid over to the new page tab, but it doesnt seem to work.
If anyone could point me in the right direction i would be very grateful.
Cheers
From what i can see I might be able to use the app_data parameter to pass data over to the page, but when i tried it, it didn't work.
This is what i am using to install the page tabs [https://www.facebook.com/dialog/pagetab?app_id=YOUR_APP_ID&app_data=12345]
But you are aware, that appending &app_data=12345 does not mean you will get a GET parameter by the name 'app_data', right …?
The app_data will be passed as a property inside the signed_request parameter – so you’ll have to decode that one, and inside you’ll find your app_data value.
Why does 'each page tab' need to have an ID?
The Page ID should be enough for you to determine which content to show (and it's passed to your app on each page load via the signed_request, and the page ID is also passed back to your app in the callback to the pagetab dialog
You could also request manage_pages Permission from the user to determine the list of pages they administer and if your app is installed on each
Facebook provides us with an option to choose a custom landing tab for the new visitors (i.e. non-fans). Can we have a custom Landing tab for fans so that every time i open the page, i m directed to that custom page rather than the Wall..
Have you checked Facebook Help Center?
How can I select a tab as default for people who already Like my Page?
This functionality does not exist.
What you are trying to do is straightforwrd.
Create a "landing page" tab app and add it to your page. Here is a tutorial on how to do it: http://how-to-create-facebook-app.koliber.com
Make this tab the default for your app. On your page, in the upper-right corner click "Edit Page" and change the "Default Landing Tab" to the one you would like displayed by default.
Now everyone will be shown the default tab when they log in. How to distinguish between those visitors who "liked" your page and those that didn't? Easy. Make two versions of the page and display one to those who liked and one to those who didn't like. How to find out whether the current visitor liked your page or not follows:
When your Page Tab URL is called in the iframe, it is passed a signed_request POST parameter. This parameter contains the info you need. However, it is encoded and structured so it needs some processing to get the info
Split the signed_request on the '.' character. The first part is the signature. The second part is the encoded_data
Decode the encoded_data into a JSON string using the URLBase64Decode function equivalent in your server-side programming language
The JSON object contains a node called "page". This contains a node called "liked".
If "liked" is true, the user liked the page and you display the "liked" version of your app. If false, show the "Please like me" version of the site.
This way, when visitors visit your page, they see your custom app in a tab. The actual content is determined server-side on your server based on the page.liked property inside of the JSON object passed to you in signed_request
The simple answer as far as I have been able to find out is "No". There is no setting which aligns with this requirement.
The wall is the default tab for people who like the page.
http://apps.facebook.com/static_html_plus/ this application gives you those options... enjoy!
I created FB application that use iframes, and it's working okay, as it should, BUT I need to check from what page is calling it.
I want different pages to pass different variables to that iframe location.
I already know how to set up it to three levels ( original page, application page, and on tab page, with different display content ), but I need to check from what page it's called.
I am thinking that it can be done in 2 ways:
1 way: Find way to pass specific variable based on page that is using this application as tab, and then redirect it to right location
2 way: Find way to create new application outside facebook ( maybe API or something ) and then enter all those values including: App name, app link that have this variable included, app tab link, using iframe and not FBML...
I will love to use 2. way...
I'm not asking you to show me code, I know that I need to do my job, I'm not asking you to do it for me, I'm just asking for help, for directions from someone who already create something like this, to point me to right direction where can I find way...
Also, please don't tell me to read bunch of stuffs, like FB Documentation or whole book that have all other "not-used-here" stuffs, I need specific part where there is a word about this...
If someone know anything about this, write it here...
Thank you!
The "page" parameter is passed along within the "new" signed_request parameter on (iframe) tabs. You get what you need for "free" ;)
page: A JSON object containing the page
id string, the liked boolean if the
user has liked the page, the admin
boolean if the user is an admin. Only
available if your app is an iframe
loaded in a Page tab.
http://developers.facebook.com/docs/authentication/signed_request/