2 I thought I'd continue the Facebooker theme, from my "previous post":http://gamutworks.net/posts/8, by extending it to include SMS. There is a lack of documentation on the Facebook developer wiki and Facebooker Rdocs, so here's a short, simple, high level how-to. To keep things consistent, I'm going to be sticking with the same theme as the previous post. That is, reminding students about assignment deadlines. h3. Assumptions 1) You've got a Facebook application up and running using Facebooker 2) Your app requires access to a Facebook user's profile 3) Your running OSX 10.5 or higher h3. Lets go already Open up the model that's handling your notifications and add the following: <pre lang="ruby"><code> #app/models/assignment.rb class Assignment < ActiveRecord::Base belongs_to :course named_scope :next, lambda { { :conditions => ['due_date > ?', Date.today], :limit => 1 } } def self.send_sms fbook_sms_session = Facebooker::Mobile.new(Facebooker::Session.create) for user in User.all self.next.each do |a| fbook_sms_session.send(user, "#{a.title} is due in #{a.course.title} tomorrow.") end end end end </code></pre> All this is doing, is creating a Facebooker mobile session, which is required when dealing with SMS, using the public class method, create, given to us by the Facebooker::Session class. We then proceed to loop through all of our users, invoke our session, and call send, a public instance method of the Facebooker::Mobile class, which takes two params: 1) uids 2) a message. At this point, you'll need to sign up for Facebook Mobile. This can be setup in your Facebook account settings. Next, you need to ask your users to opt in to receive SMS from your application. To do this, add the following wherever you'd like in your views: <pre lang="ruby"><code> <%= fb_prompt_permission ('sms', "Click here if you'd like to receive SMS notifications from this application") %> </code></pre> Alright, now that we have everything in place we can test drive sending an SMS to our users. Load up script/console and fire the method: <pre lang="text"><code> $ script/console $ Assignment.send_sms </code></pre> Voila! Ruby on Rails 2010-02-02T05:26:56Z Adding SMS features to your Facebook application with Rails. 10 false 2010-02-01T00:00:00Z Facebooker, SMS, Ruby on Rails 2010-02-02T06:32:34Z