Wulin kungfu final
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My topic on RubyConfChina2012, introduces wulin_master gem which is used for building enterprise application with ruby.
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Many companies maintain a separate repo for web and native mobile applications, and sometimes yet another for mobile web. Historically you may hear that ‘wrapped applications’ are slower and choppy. This is no longer the case – if your application is structured correctly.
By using Ember.js with Cordova, it is possible to have a single code base powering all four (desktop web, mobile web, native iOS and native Android). Outside of the immediate cost/programming time savings, this technique enables you to build future iterations faster and stop the out of sync issues plaguing many code bases (e.g. the Android app has different features to iOS).
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How to build a single code base working on all platforms
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Over the last few years, Airbnb’s frontend architecture has evolved to keep pace with the rapid advancement happening the JavaScript world. Starting as a humble Rails 2 + Prototype.js app in 2008, the frontend stack powering airbnb.com has gone through a few revisions, including a push towards single-page app architecture with Backbone.js and Handlebars.js, an adventure into isomorphic JavaScript with Rendr (our library for using Node.js to server-render Backbone SPAs), and most recently, a move toward React.js and a re-envisioning of our build pipeline to take advantage of CommonJS, ES6, and a Node.js-based transform system. Spike Brehm, software engineer on the @AirbnbNerds team, will walk through how we approached and executed on these changes. Plus, get excited to see a preview of our new approach to isomorphic JavaScript, allowing us to server-render React components from our Rails app.
Spike Brehm is a software engineer at Airbnb who specializes in building rich web experiences. As a JavaScript nerd, he has spent the last few years shipping web apps and prototyping Airbnb’s front-end stack, experimenting with “isomorphic JavaScript” — apps that have the flexibility to run on both the client and sever using the same codebase.
Web polyglot programming
1) Polyglot or hybrid programming uses multiple programming languages on the client side, with JavaScript as the target platform. This allows leveraging the strengths of different languages while avoiding JavaScript's weaknesses like weak typing.
2) Frameworks like GWT and Dart compile other languages like Java and Dart respectively to JavaScript, allowing their use in web apps while preserving features like static typing. They interface with JavaScript via APIs.
3) An event bridge pattern allows different language parts to communicate asynchronously by publishing and subscribing to messages, avoiding direct interop and enabling clean separation of concerns.
Flu3nt highlights
The document discusses various JavaScript tools and techniques for developing mobile HTML5 applications. It lists Node, Backbone, Underscore, Handlebars and Redis as popular frameworks. It also provides tips on debugging mobile apps, optimizing for battery usage, addressing HTML5 limits on mobile, and using features like web workers, offline storage and geolocation.
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This document discusses how to create mobile apps that feel native using only web technologies. It covers supporting features in Mobile Safari like local storage, CSS3 features, and geolocation. It recommends using web technologies over native due to quicker iteration times. Specific techniques covered include detecting browser type, adding home screen icons, startup images, going full screen, and viewport settings. The document also discusses frameworks like jQuery Mobile but notes native DOM APIs may be sufficient. It covers input features, touch vs click, animations, locking orientation, and performance tips. It acknowledges limitations of Android and webOS and recommends testing on actual devices. Finally, it discusses hybrid mobile frameworks like PhoneGap and Titanium that allow developing for multiple platforms using one code
Why the web won't do
The document discusses how a shared codebase approach can be used to develop apps for multiple platforms like iOS, Android and Windows Phone. It proposes using portable JavaScript and SQL for the shared application logic layer. Platform-specific UI layers would be built using the respective native technologies like Core Animation on iOS and Qt on Android. Data and events can be shared between the native and JavaScript layers through platform-specific APIs. This allows halving the porting effort while building a more robust cross-platform product by focusing on the UI instead of duplicating the application logic on each platform.
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The document provides an overview and lessons learned about developing applications with jQuery Mobile, a framework for building mobile websites and apps. It discusses jQuery Mobile concepts and architecture considerations, including using responsive design principles. It also covers challenges of testing on different devices and addressing device-specific issues like animations. The document provides code snippets and recommendations around areas like loading scripts on every page and leveraging grids.
Building single page applications
A Lecture given in Aalto University course "Design of WWW Services".
Single page app is already several years old web application paradigm that is now gaining traction due to the interest towards HTML5 and particularly cross-platform mobile (web) applications. The presentation overviews the single page application paradigm and compares it with other web app paradigms.
The presentation uses Backbone.js as the sample and gives practical tips on how to best structure Backbone.js applications. It contains an extensive set of tips and links in the notes section.
The reader is adviced to download the presentation for better readability of the notes.
Getting Started with Rails on GlassFish (Hands-on Lab) - Spark IT 2010
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From Backbone to Ember and Back(bone) Again
As a software consultant, I get to see a lot of interesting code. In this particular instance a client was in the process of transforming their web application to a rich, interactive interface with the help of another company.
The project kicked off using Backbone and things were great. Until they were not great. Pages starting getting more and more involved and blame started being thrown at the technology choice.
A move to Ember.js ensued and the app was rewritten. But architecturally bad decisions don't hide long, and soon the rewrite was preforming even worse. That's when I stepped in, with the help of another consultant, to solve the performance issues once and for all. Our solution used Backbone.js and it was fast. This is that journey.
Ruby On Rails
The document discusses Ruby on Rails, an open-source web application framework. It is optimized for programmer happiness and productivity by favoring convention over configuration, allowing developers to write code more quickly. Ruby on Rails uses a model-view-controller (MVC) architecture and is widely adopted by companies like Twitter.
JSConf US 2014: Building Isomorphic Apps
Slides from Spike Brehm's talk at JSConf US 2014. Topics include the etymology of "Isomorphic JavaScript", examples is isomorphic apps in the wild, reasons behind the growing trend towards isomorphic apps, and how to build an isomorphic module using Browserify & NPM.
Jaoo Michael Neale 09
The document provides an overview of using JBoss Application Server to run Ruby on Rails applications. It discusses installing JRuby, Rails, the JBoss-Rails deployer and support libraries. These allow Rails applications to be deployed to JBoss and take advantage of features like JDBC database connectivity. Steps covered include creating a sample Rails application, setting up the database, deploying the application to JBoss using Rake tasks, and generating models. The goal is to demonstrate how to set up the necessary components and deploy a basic Rails application on JBoss Application Server.
Modular JavaScript in an OSGi World - S Mak
What percentage of your web-app is written in JavaScript? Don’t be surprised if it’s more than half of your codebase. With the advent of HTML5 and single-page-applications driven by RESTful backends, the amount of JavaScript keeps growing. On the Java side, OSGi allows us to create modular, flexible applications. But how does this translate to the client-side? Isn’t a ‘single-page-application’ fundamentally at odds with modularity?
In this session we take a look at the currently available tools for modularity in JavaScript. There are several ways you can combine existing JavaScript module systems with OSGi-based development on the backend. We discuss tradeoffs between these different approaches based on real-world experience with large JavaScript front-ends and OSGi back-ends. In particular an example combining OSGi, RequireJS and AngularJS is presented. Along with practical advice based on current technology, we also look forward at relevant upcoming standards such as Web Components. After this session you’ll have a solid grasp of modular JavaScript development in an OSGi world.
Bio:
After getting his master's degree in Software Technology, Sander became a software developer/architect. Currently he works as Senior Software Engineer for Luminis Technologies, specializing in modular Java and JavaScript development. Additionally, data analysis and machine learning are part of his ever growing list of interests. Sander loves sharing knowledge, for example through his blog (at http://branchandbound.net) and by writing for the Dutch Java Magazine. He speaks regularly at various international developer conferences (including JavaOne, J-Fall, JEEConf), sharing his passion for Java, alternative JVM languages and related technologies.
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Wulin kungfu final
- 1. Wulin Kungfu Fight for Ruby Enterprise problems
- 2. Background ! FIFA World Cup 2010 in South Africa ! BSS software managing the Broadcasting of the event ! TV and Radio orders ! Broadcasting instructions ! Temporal booking ! Spatial booking ! Finance
- 4. Problems ! Extjs (everything is JavaScript) ! Code duplication ! Controllers setup for the JSON ! JavaScript setup of the grid and screens ! Heavy UI - Instability
- 5. We hope … ! Lighter ! Easier ! DSL ! Faster productivity
- 7. WulinMaster ! A Ruby on Rails based framework ! For resolving enterprise problems ! Developer friendly ! Extensible
- 8. ! Application Interface
- 9. Tools and technologies ! Based on: ! Ruby on Rails ( >= 3.1 ) ! SlickGrid ( https://github.com/mleibman/SlickGrid ) ! jQuery plugins (jQuery UI, BBQ …) ! The Wulin plugins are Rails Engines. ! Use JSON as communication format.
- 10. Architecture Your Application WulinOAuth WulinScreenController WulinHomeController WulinScreen GridAction GridBehavior WulinPermit Other Wulin WulinGrid GridColumn GridRelation WulinAudit Plugins WulinPanel GridStates WulinMaster WulinExcel Ruby on Rails SlickGrid jQuery Plugins
- 12. Wulin generator rails g wulin_master:install create app/controllers/homepage_controller.rb (menu configuration) create config/initializers/wulin_master.rb route root :to => 'homepage#index’
- 13. Build the menu # app/controllers/homepage_controller.rb
- 15. Wulin Grid ! Fundamental component ! Remote data ! Auto cell types ! Association columns
- 16. Wulin Screen ! Fundamental container ! One/more grids/panels ! Specific configurations for grids in it
- 17. Rails MVC Wulin MVC Model View Model grid grid Screen both change Controller Controller Auto generated Browser Browser
- 18. Build a screen and a grid rails g wulin_master:screen_and_grid blogger name:string age:integer country:reference create db/migrate/20121115075159_create_bloggers.rb create app/controllers/bloggers_controller.rb create app/screens/blogger_screen.rb create app/grids/blogger_grid.rb create app/models/blogger.rb create app/views/bloggers route resources :bloggers
- 22. Furnish it ! Grid Action ! Grid Behavior ! Grid Relation
- 23. Grid Action ! A toolbar button ! Active – respond to a user event ! Implemented in JavaScript ! Default actions are: Add, Edit, Delete ! Plugins might provide default actions such as Export Excel, Audit, etc.
- 24. Grid Behavior ! Passive Triggered by grid event ! Implemented by JavaScript ! Default behaviors
- 28. Grid Relation ! One screen, multiple grids ! Interaction between grids ! Default relations
- 31. Level up!
- 32. Crafting your own weapon ! Rails Engine ! Write your own components ! Define your own actions / behaviors ! Equip it
- 33. Open source ! http://github.com/ekohe/wulin_demo ! http://github/com/ekohe/wulin_master ! http://wulin_demo.ekohe.com
- 34. Jimmy Huang (jimmy@ekohe.com) 黄腾 @pake007