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rubymotion interface builder support (yes, with outlets)


Add this line to your application's Gemfile:

gem 'ib'

And then execute:

$ bundle

Or install it yourself as:

$ gem install ib

In your Rake file:

require 'motion/project'  

# if you use bundler
require 'bundler' 

# if you are not using bundler
require 'rubygems'
require 'ib'

Motion::Project::App.setup do |app|
  # ...


Manual Way

extend your class with IB module

class HelloController < UIViewController
  extend IB

  # define ib outlet
  outlet :title, UILabel # IBOutlet UILabel * title;
  outlet :untyped_label  # IBOutlet id untyped_label;

  # define ib action
  def someAction sender

NOTE: If you include methods and attributes from module, you can use ib_outlet and ib_action to make them visible in designer

module TouchLogger
  def controlTouched sender
    puts "touched"

class LogController < UIViewController
  extend IB

  include TouchLogger

  ib_action :controlTouched

Generators Way

Generate controller with folllowing command:

ib c Hello UIViewController \
  --outlets scroller:UIScrollView btn_hello: \
  --actions say_hello \
  --accessors data_source

The generated file:


class HelloController < UIViewController
  extend IB

  attr_accessor :data_source

  ## ib outlets
  outlet :scroller, UIScrollView
  outlet :btn_hello

  def say_hello(sender)
    # TODO Implement action here


Run rake design create Storyboard or nibs (put them in resources folder) and you will be able to bind outlets and actions to your ruby code.

Note : add ib.xcodeproj to your .gitignore

Sample app

Here is sample app

  1. clone it
  2. run bundle
  3. run rake design to change story board
  4. run rake to run app in simulator

Note : this app is build for iOS 6.0 beta 2


  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Added some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request
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