Here are some gotchas from working with Ruby on Rails.
./config/routes.rb
./bin/rails generate model <ACTIVE_MODE_NAME> xmlns xmlnsurl
./bin/rails generate migration <MIGRATION_NAME>
./bin/rails generate controller <CONTROLLER_NAME> index
If you wanna drop the database, reload the schema from schema.rb, and reseed the database
bundle exec rake db:reset
It is possible to migrate changes and rollback changes again, this example rollback one step.
bundle exec rake db:migrate
bundle exec rake db:rollback STEP=1