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Facebook Application

Facebook Application. Ranjan Kumar Singh Talentica Software Pvt. Ltd. Agenda. The Opportunity Why is the Internet increasingly obsessed with Facebook? The Facebook Platform Introduction to Facebook and the Facebook Platform The Framework Core components Tools

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Facebook Application

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  1. Facebook Application Ranjan Kumar Singh Talentica Software Pvt. Ltd.

  2. Agenda • The Opportunity • Why is the Internet increasingly obsessed with Facebook? • The Facebook Platform • Introduction to Facebook and the Facebook Platform • The Framework • Core components • Tools • The Anatomy of a Facebook App • How are Facebook Applications built? • Application Architecture • Integration points • Demo • Creating a Platform Application step by step

  3. Facebook Chases Google and Yahoo. Twitter Left Behind

  4. Facebook : General Growth • More than 350 million active users • 50% of the active users log on to Facebook in any given day • More than 3.5 billion pieces of content (web links, news stories, blog posts, notes, photo albums, etc.) shared each week • More than 1.6 million active Pages on Facebook • More than 700,000 local businesses have active Pages on Facebook • Pages have created more than 5.3 billion fans

  5. Facebook : User Engagement "We're not trying to help you make new friends online. We're just trying to help you digitally map out the relationships you already have." - Zuckerberg • Average user has 130 friends on the site • Average user sends 8 friend requests per month • Average user spends more than 55 minutes per day on Facebook • Average user clicks the Like button on 9 pieces of content each month • Average user writes 25 comments on Facebook content each month • Average user becomes a fan of 2 Pages each month • Average user is invited to 3 events per month • Average user is a member of 12 groups

  6. Discovering Facebook • Canvas • Publisher • Request, Invitation, Notification • News Feed • Comment, Like, Share • Profile • Profile Box • Info Tab • Application Tab • Application Menu • Application Directory • Application Profile Page • Business/Fan Page • www.facebook.com

  7. Discovering Facebook : News Feed • Your own personalized news channel — something like a FNN (Friends News Network), Contains a live list of announcements or stories about • profile changes, upcoming events, birthdays, changes in relationship status, and conversations with other users • activity of your network of friends on Facebook • whom they befriended, what apps they added, what their Status is. • Facebook compiles this list of news stories based on several factors - all mixed together into a behind-the-scenes, super-secret algorithm. • who posted the content, and what type of content it is • your preferences of story types, • frequency settings on specific friends, • the privacy levels of your friends, • a user’s opinion on the quality of a story • how many friends are commenting on a certain piece of content, • Facebook ultimately retains control over what is placed on the News Feed.

  8. Discovering Facebook : Facebook Pages • A Facebook Page is a customizable presence for an organization, product, or public personality to join the conversation with Facebook users. • Looks and behaves like user profiles, anybody can visit • By leveraging the real connections between friends on Facebook, a Page lets Fans become brand advocates. • Posts by the Page appear in News Feed, giving Pages a stronger voice to reach their Fans. • Pages have the flexibility of multiple customizable tabs previously exclusive to user profiles. • There are thousands of Facebook Platform applications built by 3rd party developers available for use on Page. • Example http://www.facebook.com/nytimes http://www.facebook.com/pages/Ranjan/132466815687

  9. Social Sites: While Everyone Falls, Facebook Rises

  10. Discovering the Pulse of Facebook:The Social Graph • The social graph can be defined as the interconnections that exist among family, friends, and acquaintances that every person has. • Facebook's stated mission is to model the social graph in digital form as accurately and completely as possible. • The social graph enables social distribution • The net effect of the social graph is that groups and application can achieve exponential growth

  11. Introducing the Facebook Platform • People are already building social apps, but they have to reconstruct the social graph all by themselves. • Facebook launched Facebook Applications Platform in May 2007 • The Facebook platform exposes the social graph to everybody with an idea, enabling rapid social distribution of new application. • The Facebook platform is optimized for building applications in Facebook, and with more value for people to develop on its base.

  12. The Opportunity • Earn money with Facebook applications. • A lot of people in the past few years have earned a lot through Facebook applications by just using some simple strategies. • Develop a viral application and make it popular amongst Facebook users. • Virality is inbuilt into the system, you just need to harness it. • Cheap and exponential growth • Once your application attracts a crowd you will be able to either display ads on it or simply sell it to big names who are looking for buying applications that are popular. • Wealth of Data • Relationship Status • Education & Employment Data • Geographic Data • Interests & Affinities • Not their contact information though!

  13. Top Applications

  14. Facebook Platform : Statistics • More than one million developers and entrepreneurs from more than 180 countries • Every month, more than 70% of Facebook users engage with Platform applications • More than 350,000 active applications currently on Facebook Platform • More than 250 applications have more than one million monthly active users • More than 80,000 websites have implemented Facebook Connect since its general availability in December 2008 • More than 60 million Facebook users engage with Facebook Connect on external websites every month • Two-thirds of comScore’s U.S. Top 100 websites and half of comScore’s Global Top 100 websites have implemented Facebook Connect

  15. Platform Core Components • The server API (REST) • Methods that let you add social context to your applications. • FBML, Facebook Markup Language • Allows you to integrate your application into Facebook. • FQL, Facebook Query Language • Query for Facebook user data with a SQL-style interface without using the API • FBJS, Facebook JavaScript • developers who want to use JavaScript in their Facebook applications.

  16. RESTful API • With the API, you can add social context to your application by utilizing profile, friend, Page, group, photo, and event data. • The Facebook API is a REST (Representational State Transfer)-based interface. • Method calls are made over the internet by sending HTTP GET or POST requests to the Facebook API REST server. • Nearly any computer language can be used to communicate over HTTP with the REST server. • When you call a Facebook API method, your results normally come back in either XML (the default) or JSON format. • http://developers.facebook.com/tools.php

  17. Facebook API client libraries • You can develop your Facebook application in whichever development environment you prefer. Facebook and other third party application developers have created client libraries for these environments. • Facebook provides official support for • PHP5, JavaScript, Facebook Connect for iPhone, • ActionScript 3.0 (officially supported with Adobe), • Microsoft SDK for Facebook Platform (officially supported with Microsoft) • The Facebook Platform developer community maintains the following client libraries : • Android, ColdFusion, C++, C#, Google Web Toolkit, Java, Perl, Python, Ruby, Ruby on Rails, Smalltalk, VB.NET, Windows Mobile/Facebook Development with the .NET Compact Framework • http://wiki.developers.facebook.com/index.php/User:Client_Libraries

  18. API Methods • Administrative Methods • admin.getAppProperties • admin.getMetrics • Login/Auth Methods • auth.getSession • Data Retrieval Methods • fql.query • friends.get • friends.getAppUsers • users.getInfo • users.getLoggedInUser • Publishing Methods • stream.publish • comments.add • http://wiki.developers.facebook.com/index.php/API • http://developers.facebook.com/tools.php

  19. FBML, Facebook Markup Language • FBML is an evolved subset of HTML with some elements removed, and others which have been added that are specific to Facebook. • ability to easily place social tags within HTML. • awareness of who is viewing the page. • If the logged in user is blocked from viewing the particular info, nothing renders at all. • Facebook server processes FBML and displays the output in HTML for rendering in a browser. • On the whole, most HTML tags in the Facebook environment will render the same as normal HTML • Facebook parses a few HTML tags differently than your normal HTML. • The form tag renders a form in HTML, adding five additional hidden input fields—the fb_sig_profile, fb_sig_user, fb_sig_session_key, fb_sig_time, and fb_sig

  20. FBML : Social Data Tags • Social data is the core of FBML and the primary attraction to developers. • <fb:name uid="1160" capitalize="true" /> • <fb:profile-pic uid="12345" linked="true" /> • <fb:eventlink eid="21150032416" /> • <fb:grouplink gid="2541896821" /> • <fb:user-table cols="3"><fb:user-item uid="12345" /> </fb:user-table> • <fb:user-status uid="12345" linked="true"/> • Visibility on Profile • fb:visible-to-owner • fb:visible-to-friends • fb:visible-to-app-users • fb:18-plus • fb:21-plus http://developers.facebook.com/tools.php

  21. FBML : Design and Component tags http://wiki.developers.facebook.com/index.php/FBML http://developers.facebook.com/tools.php

  22. FQL, Facebook Query Language • fql.query : returns results in XML or JSON format • Many of the Facebook API calls are just pre-packaged FQL queries • Key Advantage • Condensed XML reduces bandwidth and parsing costs. • More complex requests can reduce the number of requests necessary. • Provides a single consistent, unified interface for all of your data. • Facebook manages the database connections for you, you do not need to open and close database connections as part of your application.

  23. FQL : Syntax • If you already know SQL, it should be pretty straightforward. • SELECT [fields] FROM [table] WHERE [conditions] • You can also optionally add on ORDER BY and LIMIT clauses that work like they do in MySQL • Get pids in range (1,42) from $user_id's albums, sorted by created date: SELECT pid FROM photo WHERE aid IN ( SELECT aid FROM album WHERE owner=''$user_id'' ) ORDER BY created DESC LIMIT 1,42 • FQL introduces a way of dealing with columns which are themselves structures or arrays • "current_location" column of the user table is a location structure consisting city, state, zip and country. • You can reference the structures as a whole (SELECT current_location ) or you can filter them down to only a single field within the structure using dots (SELECT current_location.zip) • Developer tool http://developers.facebook.com/tools.php

  24. FQL : Tables

  25. FQL != SQL • SELECT * is not allowed. You need to specify all the fields by name in which you want to include in the result set. • The FROM clause can only include a single table. • At least one field in the WHERE clause must be classified as indexable. • JOIN is not supported (though IN subqueries are). • The GROUPBY and COUNT keywords are not supported. • The BETWEEN and LIKE operators are not supported. • Because you have read-only access, you obviously cannot use keywords like UPDATE, DELETE, INSERT INTO, or CREATE TABLE.

  26. FBJS, Facebook JavaScript • Facebook expose certain scripting functionality through a collection of JavaScript objects that allow you to modify your content on Facebook. • FBJS objects are made to mimic the functionality of JavaScript as closely as possible, but it may take some getting used to for people who are already adept with JavaScript. • The JavaScript syntax you've come to know and love (or hate) is exactly the same. You can create objects, use anonymous functions, create timeouts and almost any other thing you can think of. Modifying the DOM tree is slightly different, however. • Facebook pre-processes the script by parsing through the code and prepending your application ID to the names of your functions and variables. • This creates a virtual scope for every application that runs within Facebook.

  27. FBJS : The Basics • Placing your FBJS • <script> <!-- //--> </script> • <script src="http://foo.com/bar.js"></script> • FBJS DOM Objects • A handle to an FBJS DOM object can be retrieved by either calling document.getElementById, or document.createElement. • FBJS DOM objects implement most of the same methods regular JavaScript objects implement including: appendChild, insertBefore, removeChild, and cloneNode. • Properties like parentNode, nextSibling, src, href (and many many others) have been redefined as a couplet of getters and setters.

  28. FBJS: Setting Style and Content • Manipulating Styles • obj.setStyle({color: 'black', background: 'white'}); • You need to transform hyphenated style property names into lower camel case • obj.setStyle(‘marginRight', ’10px') • FBJS allows you to programmatically work with class styles that you have already defined in your code. : • addClassName(className), removeClassName(className)   • toggleClassName(className), hasClassName(className)  • Setting Content • innerHTML isn't implemented for security reasons. Three alternatives exist. • obj.setTextValue(newText) can be used to set a literal text value inside of your DOM object (no HTML or FBML accepted). • obj.setInnerFBML(fbJsStringVar) can be used to put HTML or FBML inside of your DOM object. Note that you need to create a Fb:js-string object first and pass it in as passing a string literal will result in an error. <fb:js-string var="welcomeMsg"> <div>Welcome to Poolster</div> </fb:js-string> • obj.setInnerXHTML(string) is a beta feature that allows you to place a string of XHTML directly into the document. The XHTML is sanitized in JavaScript before being rendered.

  29. FBJS : Using AJAX and Dialog • FBJS supplies a very powerful AJAX object for developers. • Facebook proxies all AJAX requests and optionally runs useful post-processing on the data returned, such as JSON, or FBML parsing. var ajax = new Ajax(); ajax.responseType = Ajax.JSON; ajax.ondone = function(data) { } ajax.onerror = function() { } ajax.requireLogin = 1; var load = { "UserName": ‘Ranjan', "Category":’2’}; ajax.post(‘http://www.poolster.com/handler.aspx’, load); • Dialogs • showMessage(title, content, button_confirm = 'Okay')  • showChoice(title, content, button_confirm = 'Okay', button_cancel = 'Cancel')  var d = new Dialog(); d.oncancel = function() { } d.onconfirm = function() {} d.showChoice("Poolster", "Are you sure you want to quit ?", 'Yes', 'No');

  30. Facebook App Types • Desktop App • Web App • FBML • Facebook User • Fan Page • Both • IFrame • Facebook Connect App • Mobile App

  31. Facebook Connect • Facebook Connect lets users bring their identity and connections everywhere. Developers can access a user's: • Identity: name, photos, events, and more. • Social Graph: friends and connections. • Stream: activity, distribution, and integration points within Facebook, like stream stories and Publishers. • Create more engaging experiences on your website. • Traffic • Enable over 300 million Facebook users to share your content with their friends on Facebook. Let users publish a story, invite their friends, or send an event. Their friends then click back to your site. • Engagement • Users can immediately find their friends and engage. More friends leads to more activity and more pageviews. Connected users create 15-60% more content than users who have not connected with Facebook Connect. • Registration • Allow login using Facebook connect • Personalization • Present relevant and targeted information based on a user's profile information. • Social Context • Highlight friend content and across site. Filter information by friends or people-in-your network's usage and recommendations. • Social Experiences • Create new experiences and lightweight actions that allow users to interact with each other and their friends (for example, like, publishing stories, gifting). • http://www.joost.com/ • http://www.facebook.com/connectnews?v=app_7146470109

  32. Facebook Connect : Features *Based on interviews with current Facebook Connect sites

  33. Facebook FBML Application Architecture

  34. IFrame application

  35. Choosing between an FBML or IFrame Application • FBML • Lets you quickly start building an application from scratch, which is good for a new Facebook developer. • Is likely to be faster on first page loads • paradigm is closer to that of the traditional Web • Gives you easy access to lots of Facebook elements • Lets your application pages have nice URLs • Has a sensible authorization mechanism • IFrames • Are easier and faster if you have an existing application, widget, or website if the application utilizes XFBML • Are likely to lead to a faster experience for users over the long run • Let you use the JavaScript, HTML, and CSS that you are used to • Are faster if you are doing a lot of AJAX in your application, since the requests don't need to go through Facebook proxy • Debugging regular HTML and JavaScript is easier than for FBML and FBJS given the tools available today • Allow you to use popular JavaScript libraries like jQuery in your code, but you'd have to modify the library to use it in FBJS, and some things just might not work

  36. Facebook App : Integration Points • Application Directory • Application Profile • Canvas Page • Profile • Applications Menu • Bookmarks • Application Tabs • Publisher • Feed Forms • News Feed • Requests • User Dashboard • Interacting with Users • Notification, Email

  37. Facebook AppsFinding the right concept • Build something interesting • since nestled in a social networking context, apps must be social. • If its social it will be viral • Leverage The System • each user brings with them a network of friends that can be involved • Engage the user • Provide the opportunity to interact and share elements with each other • completely free attention to a Facebook application is very rare. • “One Action Applications” is a proved concept!

  38. Facebook App : Virality • Metrics for virality • For every new user how many new user they convert • > 1.4 is exponential growth • Viral Channels • Request & Invitations • News Feed • Stream • Publisher • Sharing • Notifications • Email • Friend Linking • Messages • Chats • Comments

  39. Facebook App : Other Considerations • Scalability • Don’t scale until you need to “… unless you’re on Facebook.” • Object Caching • Memcached • Debugging Tools • Firebug • Fiddler • Developer Roadmap http://wiki.developers.facebook.com/index.php/Developer_Roadmap

  40. Demo

  41. Demo Step 1 : Hello Facebook User • Create Poolster demo web app • Add references to client APIs • Configure the ASP.NET app <appSettings> <add key="APIKey" value=""/> <add key="Secret" value=""/> <add key="Callback" value=""/> <add key="Suffix" value="poolster"/> <add key="PoolsterServiceUrl" value=""/> </appSettings> • Create Poolster demo Facebook app • Configure the Facebook App • Demonstrate fb:name tag • Run the App

  42. Demo Step 2 : Inviting Friends, Getting Permissions, Page Navigation • Add master page • Add Home, My games and Create pages • Demonstrate using fb:dashboard, fb:action, fb:create-button, fb:help, fb:bookmark <fb:dashboard> <fb:create-button href="CreateGame.aspx">Create a new pool game</fb:create-button> <fb:action href="CreateGame.aspx">Create a new pool game</fb:action> <fb:action href="InviteFriends.aspx">Invite Friends</fb:action> <fb:help href="MyGames.aspx">Poolster Help!</fb:help> </fb:dashboard> • Demonstrate using fb:tab and fb:tab-item <fb:tabs> <fb:tab-item title="Home" href="Home.aspx" Selected="<% =Convert.ToInt32(selected=="home") %>"> </fb:tab-item> </fb:tabs> • Demonstrate Invite Friends <fb:request-form action="home.aspx" method="POST" invite="true" type="Poolster" content="Want to play pool games? Join me! <fb:req-choice url='http://apps.facebook.com/poolster/home.aspx' label='Accept'/>"> <fb:multi-friend-selector showborder="false" actiontext="Invite your friends to Poolster"> </fb:request-form> • Demonstrate getting special permissions <form id="settingForm" runat="server" promptpermission="read_stream,publish_stream,offline_access,email"> Would you like poolster to read from and post to your News Feed? &nbsp;&nbsp;&nbsp; <asp:Button ID="btnAllow" runat="server" CssClass="inputsubmit" Text="Allow" /> </form> <fb:prompt-permission perms="email">Would you like to receive email updates from poolster?</fb:prompt-permission> • Run the app

  43. Demo Step 3 : FBJS, AJAX • Add and configure Poolster client, Add base page and login page • Add game list control with bet button and AJAX handling of bet action function ShowMessage(title, msg) { var dialog = new Dialog(); dialog.showMessage(title, msg, button_confirm = 'Ok'); } function PlaceBet(gameId, gameOptionId) { var d = new Dialog(); d.oncancel = function() { } d.onconfirm = function() { OnConfirmPlaceBet(gameId, gameOptionId); } d.showChoice("Poolster", "Are you sure you want to play ?", 'Yes', 'No'); } function OnConfirmPlaceBet(gameId, gameOptionId) { var ajax = new Ajax(); ajax.responseType = Ajax.JSON; ajax.ondone = function(response) { HandlePlaceBetResponse(response, gameId, gameOptionId); } ajax.onerror = function() { ShowMessage("Poolster", "Unknown Error ! Please try again after some time."); } ajax.requireLogin = 1; var load = { "GameId": gameId, "GameOptionId": gameOptionId }; ajax.post('<%=callback + "Handlers/PlaceBetHandler.aspx" %>', load); } function HandlePlaceBetResponse(response, gameId, gameOptionId) { ShowMessage("Poolster", response.Message); if (response.Success) { var selectedOptionId = parseInt(document.getElementById("Game" + gameId + "SelectedOption").getValue()); var element = document.getElementById("Option" + selectedOptionId); if (element != null) { element.setClassName("ListItem"); } document.getElementById("Option" + gameOptionId).setClassName("selectedListItem"); document.getElementById("Game" + gameId + "SelectedOption").setValue(gameOptionId); } } • server side handling of bet action (BetHandler.aspx), send notification (on bet action) • Add the control to home page and Run the demo

  44. Demo Step 4 : Application Tab • Add a page for displaying pool game • Link the game title to this page • Demonstrate fb:share-button <fb:share-button class="meta" > <meta name="title" content=" <%# Eval("Title") %>"/> <meta name="description" content="<%# Eval("Title") %>"/> <link rel="target_url" href="<%#"http://apps.facebook.com/" + BasePage.suffix + "/Game.aspx?gameid=" + Eval("Id") %>"/> </fb:share-button> • Add a page for displaying active games • Configure Facebook app to display this page in profile tab • Run the demo

  45. Demo Step 5: Stream, Email, Notifications • Add create page • Provide UI for creating pool game • Demonstrate various publishing methods function ShowPublishDialog() { var attachment = { 'name': '<%=GameTitle %>', 'href': '<%=GameLink %>', 'description': '' }; var actions = [{ 'text': 'play', 'href': '<%=GameLink %>'}]; Facebook.streamPublish('Created new Poolster game', attachment, actions); } private void PublishGame() { //attachment at = new attachment(); //List<action_link> actionlink = new List<action_link>(); //action_link al1 = new action_link { href = GameLink, text = "Play" }; //actionlink.Add(al1); //string msg = string.Format("created new pool game\"{0}\"", GameTitle); //Api.Stream.Publish(msg, at, actionlink, LoggedInUser.ToString(), LoggedInUser); //depricated, Developers will be able to ask users to share their primary email addresses //List<long> fbusers = Api.Friends.Get().ToList(); //Api.Notifications.SendEmail(fbusers, "New Pool Game", GameTitle, GameLink); //Api.Notifications.Send(fbusers, “Created new pool game " + GameTitle + “ “ + GameLink, // "user_to_user"); if (!ClientScript.IsClientScriptBlockRegistered("ShowPublishPoolsterDialog")) { string script = "ShowPublishDialog();"; ScriptManager.RegisterStartupScript(this, this.GetType(), "ShowPublishPoolsterDialog", script, true); } } • Display the games authored • Add option to “Mark Winning” • Run the app

  46. Demo Step 6 : Publisher • Add a publisher • Add a control for displaying publisher • Add handlers • Configure the publisher • Run the demo • View Complete demo at http://apps.facebook.com/poolster/home.aspx

  47. Thank You

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