rails_notes.txt

Rake commands
rake db:migrate    			Runs database migrations
annotate    						Annotates model classes with database column info (technically not a Rake command, but you should run this after most rake db:migrates)
rake db:test:prepare    Ensures data model from development database is reflected in the test database
rake db:rollback    		Rollback database migration
rake db:reset    				Clear database
rake routes    					Prints out all routes in application

Rails commands
rails new SomeProjectName     										Creates new rails project
rails s     																			Starts rails development server
rails g scaffold User name:string email:string    Creates User model, db migration, controller/actions, views
rails g controller Pages home contact    					Creates controller/actions, views
rails g model User name:string email:string    		Creates User model, db migration
rails g rspec:install    													Gets Rails to use RSpec instead of Test::Unit
rails g migration MigrationName    								Generates an empty migration
rails g integration_test friendly_forwarding	    Will create an integration test inside spec/requests folder
rails c    																				Starts up a console to interact with a rails app
rails c --sandbox    															Stars up a console to interact with a rails app (all changes will be rolled back)

Heroku commands
heroku open    						Opens up the live app hosted on Heroku
heroku rake db:migrate    Runs migration scripts on Heroku
heroku console    				Opens up a Heroku console
To get Heroku to Ruby 1.9.2, google for “heroku bamboo-mri-1.9.2”

RSpec commands
rspec spec/    Runs all RSpec tests in the spec folder

RubyGems commands
gem build GemName
gem install GemName			
gem uninstall GemName
bundle install    				Installs all gems found in project's Gemfile

Active Record (class methods)
User.new
User.new(:name => “Kevin”, :email => “kpanghmc@gmail.com”)
User.first
User.create(:name => “Kevin”, :email => “kpanghmc@gmail.com”)
User.create!(:name => “Kevin”, :email => “kpanghmc@gmail.com”)
User.find(1)
User.find_by_email(“kpanghmc@gmail.com”)
User.all

Active Record (instance methods)
user.save
user.destroy
user.reload.email
user.update_attributes(:name => “Kevin”, :email => “kpanghmc@gmail.com”)
user.valid?
user.errors.full_messages
user.new_record?