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source: http://avdi.org/devblog/2009/11/20/hash-transforms-in-ruby/

def transform_hash(original, options={}, &block)
  original.inject({}){|result, (key,value)|
    value = if (options[:deep] && Hash === value) 
              transform_hash(value, options, &block)
            else 
              value
            end
    block.call(result,key,value)

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echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
. ~/.bashrc
mkdir ~/local
mkdir ~/node-latest-install
cd ~/node-latest-install
curl http://nodejs.org/dist/node-latest.tar.gz | tar xz --strip-components=1
./configure --prefix=~/local
make install # ok, fine, this step probably takes more than 30 seconds...
curl https://www.npmjs.org/install.sh | sh

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namespace :db do
  namespace :enable do
    desc "enable hstore extension"
    task :hstore => [:environment, :load_config] do
      ActiveRecord::Base.connection.execute('CREATE EXTENSION IF NOT EXISTS hstore;')
    end
  end

  Rake::Task['db:schema:load'].enhance ['db:enable:hstore']
end

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RAILS_ENV=production rake db:setup
# produces the error below.....hmmm.....it's a no-worky
psql:/yourprojectpath/yourproject/db/structure.sql:29: ERROR:  could not open extension control file "/usr/share/postgresql/9.1/extension/hstore.control": No such file or directory

# hstore postgresql extension needs to be installed, so....
sudo apt-get install postgresql-contrib

# now your extension should be available to enable so log in with psql
psql -d yourproject_production -U yourdbuser -W

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sudo add-apt-repository ppa:pitti/postgresql
sudo apt-get update
sudo apt-get install postgresql-9.2 postgresql-server-dev-9.2 postgresql-contrib-9.2

sudo su -l postgres
psql -d template1 -p 5433
CREATE EXTENSION IF NOT EXISTS hstore;
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
service postgresql stop
/usr/lib/postgresql/9.2/bin/pg_upgrade -b /usr/lib/postgresql/9.1/bin -B /usr/lib/postgresql/9.2/bin -d /var/lib/postgresql/9.1/main/ -D /var/lib/postgresql/9.2/main/ -O "-c config_file=/etc/postgresql/9.2/main/postgresql.conf" -o "-c config_file=/etc/postgresql/9.1/main/postgresql.conf"

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require 'artoo'

connection :sphero, :adaptor => :sphero, :port => '127.0.0.1:4560'
device :sphero, :driver => :sphero
  
work do
  every(3.seconds) do
    if @color == :green
      @color = :blue
    else

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source 'https://rubygems.org'



# # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'

# gem 'rails', '4.0.1'

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rvm get stable
rvm list known
rvm install 2.1.0

rvm gemset create mountainlion_rails4
gemset created mountainlion_rails4     => /home/bruce/.rvm/gems/ruby-2.0.0-p247@mountainlion_rails4
rvm use ruby-2.0.0-p247@mountainlion_rails4
rvm --ruby-version use 1.9.3@my_app
The second form will create both .ruby-version and .ruby-gemset.

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#Model 

@user.should have(1).error_on(:username) # Checks whether there is an error in username 
@user.errors[:username].should include("can't be blank")  # check for the error message 

#Rendering
response.should render_template(:index)

#Redirecting 
response.should redirect_to(movies_path)

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## Generating url paths

app.users_path  --> app is an object, users_path is the URL helper for your User model