What's new in Rails 3.1

oleg.kossoy@sap.com

Currently RC4, to be released soon

Aaron Patterson

Core team, in rc4 infoRails 3.1.0.rc4 has been released!

In a nutshell

• Asset Pipeline• HTTP streaming• JQuery by default• Reversible migrations• Mountable engines• Prepared statements

In a nutshell

• Rack::Cache on by default• Turn test-output on Ruby 1.9• Force SSL• Role-based mass-assignment

protection• BCrypt-based passwords• Custom serializers

There's always changelog

Assets pipeline

• Powered by Sprockets 2.0

Why use Sprockets?

1. Extract reusable code and share it across multiple web sites or applications. 

2. Speed up your site by automatically concatenating JavaScript into a single file for production. 

3. Organize your JavaScript source code into multiple commented files and directories.

4. Use bleeding-edge framework and library code in your application. 

5. Sprockets is compatible with the PDoc JavaScript documentation system and the JavaScript framework of your choice.

Assets pipeline

• Enables proper organization, including use in plugins and engines

Assets pipeline

Js plugin example

plugins/color_picker/assets/images/color_picker/arrow.pngplugins/color_picker/assets/images/color_picker/circle.pngplugins/color_picker/assets/images/color_picker/hue.pngplugins/color_picker/assets/images/color_picker/saturation_and_brightness.pngplugins/color_picker/assets/stylesheets/color_picker.cssplugins/color_picker/src/color.jsplugins/color_picker/src/color_picker.js

color_picker.js:

//= require "color"//= provide "../assets"

When <color_picker> is required in your application, its provide directive will tell Sprockets that all files in the plugins/color_picker/assets/ directory should be copied into the web server's document root.

Assets pipeline

Compiling to one application.js//= require jquery//= require jquery_ujs//= require_tree .//= require 'independent_file'//= require 'super_lib'

Assets pipeline

“CoffeeScript is well done and more convenient to use

than JavaScript”- Brendan Eich, inventor of JavaScript

Assets pipeline

CoffeeScript

• Ruby-like syntax• Doesn't deprecate JavaScript code• OOP made easy (extends, etc)• Arrays with slicing and generators• Strings with interpolation and multi-line

Assets pipeline

CoffeeScript

Assets pipeline

CoffeeScript

http://asciicasts.com/episodes/267-coffeescript-basics

Assets pipeline

SASS

• Nesting• Variables• Mixins

Reversible migrations

 

Basic Auth