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资源说明：Presentation notes and assets for February 2009 Maine Ruby Users group meeting.
[DRAFT] ---------- Learning Objectives: * Non-Developer types will know what a social network is * Non-Developer types be able to think critically about how or why they might use an SN * Developer types will know how to explain what a social network is * Developer types will be able to explain to Non-Developer types why they should (or shouldn't use an SN) * Developer types will be able to build a basic social network app using existing tools * ... ---------- # Simple Social Networking With Ruby on Rails Abstract: What is a social network? Why build a social network? How might one build a social network? As we explore these questions, we will look at the development of a social networking application that is built on top of the Ruby on Rails platform Insoshi. About the presenter(s?): By day, Justin Henry [http://jdhenry.com] is a mild mannered application administrator at a Public Ivy somewhere in New England. By night, Mr. Henry puts on his cape and develops custom web applications for fun and profit. A few networks I'm on: * [screenshot of FF accounts page] ## What is a social network? * Context of web applications * Wikipedia has more on the broader, sociological concepts * http://en.wikipedia.org/wiki/Social_network * Provides a Utility and/or Function for users * Content is still king * Content tends to be user-generated, controlled, and owned (unless you are FB, apparently) * Content interaction patterns (generating new content, sharing/republishing, modifying/remixing) * It's People! * user relationships are generally many-to-many * a blog is more of a one-to-many relationship pattern * User interaction patterns (friendships, fans, friends-you-may-know) ## Why build a social network? * What are you selling? * An idea, product, theology, movement, etc. * Why will your users come here? * What channels do you currently reach with your customers? * How are you interacting with your customers? * How do your customers interact with each other? * How do your customers interact with their customers and others around them? * The evolution of the newsletter * newsletters -> email lists -> blogs -> social networks? * It's fun! * Provide a service to customers and potential customers * Crowdsourcing - i.e. google's image word game * Think small - it doesn't have to be the next Facebook. * Karma - putting the Service and the Community back in community service * Scratch that itch (whiteboard in the sky) ## How do you build a social network? * Join as many as you can * Get a feel for what others are doing in terms of UI * consider this an education in user interaction and user experience * Just like reading blogs or books will help you become a better writer. * Using these applications will inform your development process ### Let's start by thinking about what our data looks like At the least, you'll probably have: * Users * Relationships (friends/fans) * Content ### Pre-Fab vs. Home Cookin' Building from Scratch * It's not too far off from the build-a-blog in 5 minutes example * Just need a few more models, right? * Add in a few plugins.... Example relationships Insoshi's connections migrations: create_table "connections", :force => true do |t| t.integer "person_id" t.integer "contact_id" t.integer "status" t.datetime "accepted_at" t.datetime "created_at" t.datetime "updated_at" end Dan Fischer's "FischyFriends" example migration create_table :friendships do |t| t.integer "user_id", :null => false t.integer "friend_id", :null => false t.datetime "created_at" t.datetime "updated_at" t.timestamps end A few plugins and tools for consideration: * Paperclip * acts\_as\_commentable * acts\_as\_taggable\_on Prefab: * Refactoring other people's code is a great way to learn Several options exist in the rails community: * Community Engine - bills itself as a "plugin" * Insoshi platform * Ning (furniture included! buy vs. build) * Bort, etc (just the walls, please) * ... and many more ... #### Enter Insoshi * Advantage: having a lot of pieces laid out for you * galleries, forums, blogs, messaging, activity feeds, events * Disadvantage: having a lot of pieces laid out for you * may be lots to change or retrofit to your needs #### Inshtalling Insoshi * To sphinx or not to sphinx? * might depend on db you are using (don't need it for postgres) * installing sphinx on OSX is a pain - need to add symlink, i.e.: * sudo ln -s /usr/local/mysql/lib /usr/local/mysql/lib/mysql * after, it runs pretty smoothly * To install without sphinx, just skip that part of the install process. * Yaay, I've got tests, yaaay! * installer script installs gems ### Building on top of Insoshi * Users and relationships already exist * Choose a model(s) to repurpose as needed (i.e. for custom content) * Build new model(s) for custom content and interactions ### Example App - MyEventCarbon * Idea: Set up an app to let attendees and promoters of local events: * track the carbon footprint of their events * organize carpools * suggest bus routes and other alternatives * Repurpose Insoshi's nascent event model * Use Gmaps api for geocoding * AMEE for carbon calculations (ammee.com) * Plugins * ym4r for embedding google maps * rspec\_response\_enhancer - add more descriptive output to rspec * Floppy-amee - for interacting with AMEE data * Demo: * create account, * register for event * Next steps * Carpooling offering/accepting/tracking * Live carbon calculations * Pull events from other services (upcoming, eventful) * Import ical files, RSS, microformats (hcal) * Adding to activity feed * backchannel integration * Tests appear to be generated? * Odd mass-assignment solution * calendar date select widget is broken ### Moving forward * Your homework: Join some social networks and start using them. * They work best when people you know (that's us) are using them with you * Join me! Some of my networks are on http://greengaloshes.cc/about/ or http://friendfeed.com/puddlestomping * Questions? * Beer! ### Sources, Resources, and paths for further exploration * Wikipedia article on "Social Network" http://en.wikipedia.org/wiki/Social_network * Jim Neath > Building a Social Network Site in Rails: http://jimneath.org/2008/04/25/building-a-social-network-site-in-rails/ * MissingMethod > How To Build a Social Network with Ruby on Rails: http://www.missingmethod.com/2007/01/08/how-to-build-a-social-network-with-ruby-on-rails/ * Friendship model examples & self referential models: * Dan Fischer > Fischyfriends: http://github.com/dfischer/fischyfriends/tree/master * Josh Susser > Self-referential has_many :through associations: http://blog.hasmanythrough.com/2007/10/30/self-referential-has-many-through
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