Rails Cheat Sheet

1. Create rails application

$ rails new demo

2. Examine installation

$ cd demo
$ rake about

3. Start the application

$ rails server

4. Create a controller and actions

$ rails generate controller Say hello goodbye
$ rails generate controller Store index

5. Generate a scaffold

$ rails generate scaffold Product title:string description:text image_url:string price:decimal
$ rails generate scaffold_controller LdapUsers  # generate only controller and views, say if model had been predefined.

With relationships

$ rails generate scaffold LineItem product:references cart:belongs_to

Destroy just created scaffold

$ rails destroy scaffold LineItem

6. Apply the migration

$ rake db:migrate

7. Run the tests

$ rake test
$ rake test:models - only the models directory

8. Populate table with test data

$ rake db:seed

9. Rollback the migration

$ rake db:rollback

10. Open up rails console

$ rails console
$ rails c

11. Add a column to a table

$ rails generate migration add_quantity_to_line_items quantity:integer

12. Create a migration

$ rails generate migration combine_items_in_cart

13. Clear the logs

$ rake log:clear LOGS=test

14. Create a mailer

$ rails generate mailer OrderNotifier received shipped

15. Create an integration test

$ rails generate integration_test user_stories

16. Generate documentation in HTML format. First modify README.doc then...

$ rake doc:app

17. See how much code is written

$ rake stats

18. Loading production db

$ rake db:setup RAILS_ENV="production"

19. Generate rake task

$ rails g task perfdb get_baselines
      create  lib/tasks/perfdb.rake