This file lists several common commands that you may find useful in
the Ruby on Rails projects for CS142. Except for the rails
and gem commands, you
should run these commands in the top-level directory for a Rails
application.
rails foo
Creates a new Rails applications in subdirectory foo.
ruby script/generate model foo
Creates a new model class Foo with a skeleton class
definition in app/models/foo.rb and a skeletal migration
in db/migrate/*_create_foos.rb.
ruby script/generate controller foo a b
Creates a new controller class FooController with a
skeleton class
definition in app/controllers/foo_controller.rb. It also
creates skeleton action methods a and b
in the controller, plus skeleton views in the files
app/views/foo/a.html.erb and app/views/foo/a.html.erb.
If a and b are omitted then the controller is
created with no actions or views.
ruby script/generate migration foo
Creates a new migration in the file db/migrate/*_foo.rb.
rake db:migrate
Runs all migrations to bring the database up to date.
rake db:migrate:reset
Drops the database, creates a new one, and runs all migrations to bring the database up to date.
rake db:migrate VERSION=20090909201633_create_photos.rb
Runs migrations (either forward or backward) to restore the database to match the state just after the given migration.
ruby script/server
Starts up a Web server on port 3000 running the current application; log messages from the server will appear on standard output.
gem update
Updates all Ruby Gems.
gem update rails--include-dependencies
Updates Rails to the latest version, including all Gems that Rails depends upon.
gem update --system
Updates Ruby to the latest version.