Ruby on Rails installation

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How to install Ruby, Gems, and Rails. Instructions for Linux workstation, Linux server, and Windows workstation.

Contents

Installation on Ubuntu Linux

If MySQL isn't already installed, install and configure it.

  • Install the following packages:
Server 
root@server:~# apt-get install ruby-full build-essential apache2 apache2-mpm-prefork \
  apache2-prefork-dev libapache2-mod-ruby ruby-elisp libmysqlclient-dev libruby-extras \
  libyaml-ruby libzlib-ruby libopenssl-ruby \
  sqlite3 libmysql-ruby \
  libmysql-ruby libsqlite3-ruby libsqlite3-dev
  imagemagick graphicsmagick libmagick10 libgraphicsmagick1 libgraphicsmagick1-dev librmagick-ruby
Desktop 
root@desktop:~# apt-get install ruby-full build-essential ruby-elisp libmysqlclient-dev \
  libyaml-ruby libzlib-ruby libruby-extras libopenssl-ruby \
  sqlite3 libmysql-ruby \
  libmysql-ruby libsqlite3-ruby libsqlite3-dev \
  imagemagick graphicsmagick libmagick10 libgraphicsmagick1 libgraphicsmagick1-dev librmagick-ruby
  • (Optional) Installing Ruby 1.9.2 on Ubuntu, making a system-wide change with the alternatives system.
    • Install Ruby 1.9.2 (still in the 1.9.1 package) 
root@desktop:~# apt-get install ruby1.9.1 ruby1.9.1-dev rubygems1.9.1 irb1.9.1 ri1.9.1 rdoc1.9.1 g++
    • Bring Ruby into the alternatives system 
root@desktop:~# update-alternatives --install /usr/bin/ruby ruby /usr/bin/ruby1.8 500 \
       --slave   /usr/bin/ri ri /usr/bin/ri1.8 \
       --slave   /usr/bin/irb irb /usr/bin/irb1.8 \
       --slave   /usr/bin/rdoc rdoc /usr/bin/rdoc1.8
    • Bring Ruby 1.9 into the alternatives system 
root@desktop:~# update-alternatives --install /usr/bin/ruby ruby /usr/bin/ruby1.9.1 400 \
       --slave   /usr/bin/ri ri /usr/bin/ri1.9.1 \
       --slave   /usr/bin/irb irb /usr/bin/irb1.9.1 \
       --slave   /usr/bin/rdoc rdoc /usr/bin/rdoc1.9.1
    • Choose which Ruby you want, system-wide 
root@desktop:~# update-alternatives --config ruby
and then choose Ruby 1.9.1 from the menu
    • Check it works with 
root@desktop:~# ruby --version
(Instructions from Michal Frackowiak's blog)
Or, if you want to install different versions on a per-user basis, or switch quickly between them, use RVM.
  • Build gem from source, to avoid it conflicting with apt 
root@server:~# tar -xzf rubygems-1.2.0.tgz
root@server:~# rm rubygems-1.2.0.tgz
root@server:~# cd rubygems-1.2.0
root@server:~# ruby setup.rb
root@server:~# cd ..
root@server:~# rm -r rubygems-1.2.0
root@server:~# ln -s /usr/bin/gem1.8 /usr/bin/gem
(Do not use sudo ruby rubygemsx.x.x/setup.rb)
  • Update gem 
root@server:~# gem update --system
root@server:~# gem install rubygems-update
root@server:~# update_rubygems
(The first step is needed to upgrade to 1.2.0; the last two steps are needed for the upgrade to 1.3.1. It's best to do them both.)
  • Install the required gems. On the server, install: 
root@server:~# gem update 
root@server:~# gem install rails
root@server:~# gem install mysql
root@server:~# gem install sqlite3
root@server:~# gem install passenger
root@server:~# gem install mongrel_cluster
root@server:~# gem install bundler
root@server:~# gem install jeweler
On the development machine, install: 
root@desktop:~# gem update 
root@desktop:~# gem install rails
root@desktop:~# gem install mysql
root@desktop:~# gem install sqlite3
root@desktop:~# gem install passenger
root@desktop:~# gem install capistrano
root@desktop:~# gem install rspec
root@desktop:~# gem install cucumber
root@desktop:~# gem install yard
root@desktop:~# gem install termios
root@desktop:~# gem install bundler
root@desktop:~# gem install jeweler

RVM

If using RVM to keep different Ruby versions around, you need to install the Readline development headers first: 

root@desktop:~# apt-get install libreadline-dev

user@desktop:~$ gem install rails rake rcov rspec gemcutter git jeweler capistrano mysql sqlite3 shoulda cucumber yard
If any of the packages fail to install, simply re-install them and they should work fine.
  • To install Phusion Passenger, give the command 
root@desktop:~# gem install passenger
root@desktop:~# passenger-install-apache2-module
and follow the instructions. The script will compile and install a new Apache2 module for you.
You'll need to add these lines to /etc/apache2/httpd.conf 
# Load the Passenger module for Rails applications
LoadModule passenger_module /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6/ext/apache2/mod_passenger.so
PassengerRoot /usr/lib/ruby/gems/1.8/gems/passenger-2.0.6
PassengerRuby /usr/bin/ruby1.8

Installing Rails with NetBeans 6.5 on Windows

  • Download and install Netbeans 6.5
  • Set the JAVA_HOME environment variable
    • Right click the 'My Computer' icon on the desktop. Select 'Properties'
    • Select the 'Advanced' tab, press the 'Environment variables' button
    • Add a new System variable, JAVA_HOME, which contains the path of the NetBeans JDK (currently C:\Program Files\Java\jdk1.6.0_03: use NetBeans's Tools | Java Platform menu item to find the path)
(See here for pretty pictures)
  • Update RubyGems
    • Open a new command terminal (Start | Run | cmd)
    • CD to C:\Program Files\NetBeans 6.5\ruby2\jruby-1.1.4\bin\
    • Update RubyGems 
gem install rubygems-update
rubygems-update
gem update --system
gem --version
    • Check you're at version 1.3.5
  • Update Rails. Stay in the same directory and give the command 
gem update
    • Check Rails is at version 2.3.3
  • Install the Ruby MySQL gem 
gem install mysql

Getting NetBeans 6.5 to use another Ruby

We'll be using the system-wide Ruby and Gem programs, rather than NetBeans's built-in JRuby ones. To make NetBeans know where they are, use the Tools | Ruby Platforms menu item and tell NetBeans about the Ruby executable in /usr/bin/ruby and /usr/bin/gem. Do the same for Tools | Ruby gems.

Then tell NetBeans which Ruby platform to use. You need to do this on a project-by-project basis. Right-click on the project's root node in the NetBeans navigator, select the Set Configuration | Customize... option and select the right Ruby platform from the drop-down list at the top of the dialog.

Note that WEBrick runs NetBeans's 'main project' when a project is run.

When creating a new project, the database needs to be created. Either do this from the Instant Rails Ruby console, or use the NetBeans MySQL database connectors. (Does this latter approach work?)

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