The document discusses building mobile applications using HTML5, jQuery Mobile, Ruby and Database.com. It summarizes the strengths and weaknesses of different mobile development strategies. It then demonstrates building a sample "Mobile Chow Finder" application that uses Database.com as the data store, jQuery Mobile for the front-end framework, and Ruby on Rails for the backend controller. The presentation includes code examples and discusses best practices for developing mobile applications using these technologies.

1. Creating HTML5 Applications with
jQuery Mobile, Ruby and
Database.com
Developer Track
Senior Technical Consultant, Appirio & Platform Architect, CloudSpokes
@jeffdonthemic

2. Safe harbor
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3. Jeff Douglas
Senior Technical Consultant, Appirio
Platform Architect, CloudSpokes
Co-Author, “Salesforce Handbook”
& “Beginning Java Google App Engine”
http://blog.jeffdouglas.com
@jeffdonthemic

4. Appirio Helps Enterprises Power Their Business with
Public Cloud Solutions
Helping Enterprises Become:
Efficient Effective Agile
Social Mobile
Technology-enabled professional services,
supported by 500 cloud experts and
a 50,000+ cloud developer community
5 years, 300 enterprises, 1.5M users moved to the cloud
4

5. What to walk away with
 Strategies for building mobile applications with the Force.com platform.
 Mechanics on how to build a jQuery mobile application with
Database.com and Ruby on Rails.
 Sample code for your mobile project.
 Best practices with Force.com mobile application with Ruby on Rails and
Database.com.
 A deep love and appreciation for the Force.com platform.

6. Agenda
 Mobile development strategies
 Salesforce Mobile SDK
 The “Mobile Chow Finder” application
 Technology stack overview
• Database.com
• Ruby on Rails
• jQuery Mobile
• Databasedotcom gem
 Demo (aka “Show me the code!”)

8. Native vs. HTML5 vs. Hybrid

9. Native applications
 Pros
• Feature rich, look & feel and performance
• Objective-C & Java
• Easy to find applications
• Easy to monetize applications
 Cons
• Limited to single platform
• Objective-C & Java
• Distribution via Apple App Store and Google Play

10. HTML5 applications
 Pros
• A "write one, run many" solution that is cross platform and cross device
• Low barrier to entry - HTML5, CSS3 & JavaScript skills
 Cons
• Not up to par with the native app experience
 “Frameworks”
• jQuery Mobile
• Sencha Touch
• jQTouch

11. Hybrid applications
 Pros
• Application framework that enables you to build natively installed applications
using HTML, CSS and JavaScript.
• Supports accelerometer, camera, compass, contacts, geolocation, sotification,
storage and more.
• PhoneGap Build – no SDKs to install! Spits out binaries for 7 mobile platforms
• Discover and monetize via App Store and Play
 Cons
• PhoneGap: Doesn‟t look native
• Titanium: Platform specific API via JavaScript for Android & iOS. No HTML or
CSS support.

12. CloudSpokes HTML5 Apps

13. Salesforce.com Mobile SDK
 Suite of open-source technologies for iOS, Android, HTML5 and hybrid
applications
 Sample applications, quick start and webinars
 Mobile components for Visualforce
 Easy to build jQuery Mobile Visualforce applications

15. Building the “Mobile Chow Finder”
 HTML5 application for service members to find the local “Chow Hall”
 Database.com
 jQuery Mobile
 Ruby on Rails
 Geolocation
 Store favorites using LocalStorage

16. jQuery Mobile - View
 Super easy! Uses web standard HTML5, CSS3, and JavaScript to easily
develop user interfaces for mobile web apps
 Framework built on top of jQuery – EVERYONE loves jQuery!
 Provides custom events to detect mobile and touch specific actions like
tap, tap-and-hold, swipe, and orientation change (i.e. rotating the device).
 We are just building web pages!!

17. Database.com - Model
 A secure, cloud database for building social and mobile enterprise apps.
 Slimmed down version of Force.com database (essentially the Setup
section)
• Only custom objects (no CRUD UI)
• Apex classes, triggers & workflow
• Identity & user management plus role and profile security
• Oauth2 & REST baked in
 Utilize your favorite Force.com tools
 Pricing based upon user licenses, records and transactions

18. Ruby on Rails - Controller
 Great for quickly building social and mobile applications
 Leverage thousands of open source packages and frameworks to build
amazing applications.
 Databasedotcom Ruby gem
• Open source ruby client for accessing REST and Chatter APIs
• Supports OAuth2
• ActiveRecord syntax
• Should be called „Forcedotcom‟ gem
 Host the application on Heroku – WINNING!

19. Let’s code this sucker up!

20. Recap – What did we just see?
 Strengths and weaknesses of mobile application development strategies.
When to use one versus the other.
 The Salesforce.com Mobile SDK embraces all three development
approaches.
 Advantages of using Database.com as a data store.
 How to quickly and easily develop HTML5 mobile applications using open
source technologies.
 Best practices for developing mobile applications.

21. Additional Resources
 Mobile Framework Comparison
 HTML5 vs Native: The Mobile App Debate
 Force.com Mobile SDK
 Getting Started with jQuery Mobile
 Sample Application Code (github)
 Databasedotcom Gem (github)

22. Jeff Douglas
Senior Technical Consultant, Appirio
Platform Architect, CloudSpokes
@jeffdonthemic