This is a simple page serving as a one stop reference for Ruby-related commands and tools.

Update: I’ve put up a comprehensive site of Ruby and Ruby on Rails resources at RubyMatters.com

Ruby on Rails

External Resources

1. Irb Tips and Tricks
2. Pragmatic Wiki - Rails Playtime - discussion and code from the book “Agile Web Development with Rails”, second edition.

to upgrade rails…

sudo gem update rails --include-dependencies

to create a new app…

rails name_of_app

to create a controller…

ruby script/generate controller controller_name

to test an app configuration including db connectivity…

rake db:migrate

to create a model…

ruby script/generate model model_name

to migrate model changes to the db…

rake db:migrate

to add a migration (such as adding columns)…

ruby script/generate migration add_price

to add scaffolding to a controller…
[syntax,add_scaffold.rb,ruby]

to create static scaffold…

ruby script/generate scaffold product admin

to create a db table for storing session data…

rake db:sessions:create

to delete all data from a db table…

rake db:sessions:clear

an example of a migration with foreign keys defined…

[syntax,migration_foreign_keys.rb,ruby]

defining a one-to-many relationship in the model…

[syntax,one-to-many.rb,ruby]

to create api docs…

rake doc:rails

to delete previous versions of libraries RubyGems installs…

gem cleanup

start the interactive Ruby shell (irb)…

ruby script/console

after installing a new version of Rails it may be a good idea to update supporting files for the app…

rake rails:update

WEBrick

to start…

ruby script/server

Mongrel

to install from a Rails project root…

sudo gem install mongrel --include-dependencies

to start…

mongrel_rails start -d

to stop…

mongrel_rails stop