Get Rails installed on your Mac from scratch
These steps are the simplest way that I've found to get up and running quickly with a Rails development environment. If you plan on deploying to Heroku, you'll want to go ahead and install the PostgreSQL database instead of using the default Sqlite database.
- Open Xcode -> Preferences -> Downloads
- Download the Command Line Tools
- $ \curl -L https://get.rvm.io | bash -s stable
- $ rvm install ruby
- $ gem install rails
Optional but recommended
- $ ruby -e "$(curl -fsSL https://raw.github.com/mxcl/homebrew/go)"
- $ brew install postgres