Neverending Facebook API changes

Believe it or not, facebook changed part of its api again. Since today, authorizing for iframe applications does not work the same way it used to. Previously it was enough to redirect:

… where facebook authorized your app and redirects back to the:

… where session was valid access_token.

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Extending FacebookOAuthGraph Class

While The Facebook Graph API article becomes pretty popular and a lot of developers keep asking me to publish some practices I use, I managed to create this blog post. Here is a list o some functions you may want to extend FacebookOAuthGraph Class with.

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Authorizing Iframe Facebook Applications For Graph API

This article continues my exploration of best facebook graph api integration into your flash app. Before continue reading, make sure you understand the previous article. Due to huge interest, I am adding codes that makes your flash app working with graph api within facebook iframe. Try this app live on, notice once you get there, you are redirected to grant permissions (if not authorized or granted already) and then redirected back to the app, where you are connected and ready to use graph api.

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Facebook Graph API & OAuth 2.0 & Flash (update)

As previously mentioned, facebook released a new Graph API. It is based on OAuth 2.0 protocol (old authorization token also works). While it is fresh thing, there is no much ActionScript stuff around, so I came with FacebookOAuthGraph class. This class is meant to be used as an abstract class, while it contains just the basic authentication algorithm and call method to request data. It stores access token in SharedObject, so next time you came into app, you get connected on background without noticing (no popup etc.). Your token should expire in 24 hours.

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Facebook now with OAuth and Open Graph (update)

Few days before while I was working on TwitterLogger Class for ActionScript 3 I discovered OAuth – an open protocol to allow secure API authorization . While reading all the stuff about OAuth and PHP SDKs, I noticed one statement somewhere (can’t find it nowhere) that Facebook was in fact using OAuth for its Facebook Connect tool but some derived version. This has now changed! Facebook is standardizing communication and authorization by introducing Open Graph and OAtuh 2.0.

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Inviting Friends into Facebook Application (update)

Those are hard times. Facebook discontinued support for Notifications.send method March 1, 2010. Calling this method returns error code 3 (Unknown method). Instead, developers are directed to use other communication channels. From those some are not yet even a part of facebook-actionscript-api yet (dashboard) other not published from facebook (invites) and those that may work via api are experimental and may change any day (activities).

Excluding streams as communication channel, the only usable way, these days, to acquire some new facebook application users is using <Fb:request-form> (part of FBML). When your application is IFrame, you may find interesting that you are able to use FBML within your HTML files. In order to make this happen, you have to use <Fb:serverFbml> (renders the FBML on a Facebook server inside an iframe). Now, lets see how to open request form in your Facebook Iframe application:

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Parsing FQL result

Facebook Query Language, or FQL, allows you to use a SQL-style interface to more easily query the same Facebook social data that you can access through other Facebook API methods (assuming your application has access!). Data returned for Facebook ActionScript Api are XML. You can access data via E4X after setting correct namespace. As for now (January 25, 2010), Facebook result defines xmlns=”” , but it may change in future, so lets make it dynamic…

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Elegant Facebook Login For Desktop Application

Default facebook login page is usualy opened in new browser window or popup window, so user lose focus from your page. This application opens facebook login page within your flash application, so user will not lose your page. In fact little iframe trick is used.

This post connects my 3 previous posts: Flex IFrame – Web browser in flash, FacebookLogger and Facebook Extended Permissions With Authorization by Overriding Class in swc in order to create elegant solution for facebook connect with your desktop application (means outside facebook iframe or fbml). I recomend to read all previous mentioned posts before trying to run this app.

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Facebook Extended Permissions With Authorization by Overriding Class in swc

It may be not popular, but it is possible to substitute / override whole class from .swc file. Lets say you are using some public api, in our case Facebook actionscript api. I admire work of developer team, but I would like to have some things different. My facebook application requires publish_stream extended permission right after user login (authorize) my application. Even if official facebook api documentation says it is possible to ask for extended permission with login.php call (req_perms parameter), our facebook actionscript api does not offer setting this parameter.

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In a last couple of weeks I have been working on a lot of facebook applications. It did not took long to realize that there is always the same logic behind logging/connecting to facebook. So I came to FacebookLogger abstraction class that handles these basic steps. It only contains login/connection logic, so its pretty much the core that is usable only after extending.

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