Rails 3 with PostgreSQL working (pg gem)

gistfile1.rb

This example shows how to setup an environment running Rails 3 beta 3 under ree-1.8.7-head with a 'rails3' gem set.

# pg gem does not seem to work with 1.9.2-head. Hence, reverting back to ree.

∴ rvm update --head
# ((Open a new shell)) or do 'rvm reload'

# If you do not already have the ruby interpreter installed, install it:
∴ rvm install ree-1.8.7-head

# Switch to ree-1.8.7-head and gemset rails3, create if it doesn't exist. 
∴ rvm --create use ree-1.8.7-head@rails3

∴ gem install rails --pre

# Check to see we now have Rails 3.0.0 rc3
∴ rails --version
Rails 3.0.0.rc3

∴ gem install pg -- --with-pg-dir=YOUR_PG_DIR