Use mysql as the database rather than sqlite:
>rails newproj -d mysql
Create migration with new field to existing table:
>script/generate add_fieldname_to_tablename fieldname:fieldtype
Generate a scaffold for an existing class and table
>script/generate scaffold ClassName fieldname:fieldtype --skip-migration
See routes:
>rake routes
See all rake tasks:
>rake -T
Migrate specific database:
>rake db:migrate RAILS_ENV=production
Migrate database to specific version:
>rake db:migrate VERSION=2
Migrate to second-to-last version:
>rake db:rollback
