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// lets say i have this Values table


id    prop    data
1     age     {value: 21}
2     age     {value: 40}
3     name    {value: "Jane"}
4     name    {value: "Joe"}
5     time    {value: 12.2}
6     time    {value: 21.4}

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/usr/local/rvm/rubies/ruby-1.9.2-p192/lib/ruby/1.9.1/mkmf.rb:381:in `try_do': 
The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.

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rvm update head
rvm --force install 1.9.2
gem install bundle

## in your rails app
bundle
Installing nokogiri (1.4.2) with native extensions 
 ...

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## Gemfile

# and rake tasks are available in development mode:
group :test do
  gem "sample_models"
end


## unit test
require 'test_helper'

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user:
  can: read a blog

author:
  extends: user
  can: write a blog

manager:
  extends: author
  can: publish a blog

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# lib/javascript_helper.rb

module ActionView 
  module Helpers 
    module JavaScriptHelper 
      def j(data) 
        escape_javascript(data)
      end
    end
  end

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module RockNRole
  
  def self.included(base)  
     base.send :extend, ClassMethods 
  end 
  
  module ClassMethods
    def has_rockin_roles
      send :include, InstanceMethods
    end