How to reverse a 'rails generate'

Question

I want to delete all the files it created and roll back any changes made, but not necessarily to the database, but more to the config files.

I\'d like to automatical

Answer 1

We use generate as rails generate app. So regenerating any generate statement can be reversed using destroy statement. Just replace generate with destroy i.e. rails generate app can be written as rails destroy app' rails generate ____asrails destroy ____`

Answer 2

It's worth mentioning the -p flag here ("p" for pretend).

If you add this to the command it will simply do a "test" run and show you what files will be deleted without actually deleting them.

$ rails d controller welcome -p

  remove  app/controllers/welcome_controller.rb
  invoke  erb
  remove    app/views/welcome
  invoke  test_unit
  remove    test/controllers/welcome_controller_test.rb
  invoke  helper
  remove    app/helpers/welcome_helper.rb
  invoke    test_unit
  remove      test/helpers/welcome_helper_test.rb
  invoke  assets
  invoke    coffee
  remove      app/assets/javascripts/welcome.js.coffee
  invoke    scss
  remove      app/assets/stylesheets/welcome.css.scss

If you're happy with it, run the command again without the -p flag.

Answer 3

You can revert your

rails g/generate controller/model/migration xxx

output by using:

 rails d/destroy controller/model/migration xxx

Answer 4

You can undo a rails generate in the following ways:

• For the model: rails destroy MODEL
• For the controller: rails destroy controller_name

Answer 5

If you prefer to delete the controller manually:

For controller welcome

rm app/controllers/welcome_controller.rb
rm app/views/welcome
rm test/controllers/welcome_controller_test.rb
rm app/helpers/welcome_helper.rb
rm test/helpers/welcome_helper_test.rb
rm app/assets/javascripts/welcome.js.coffee
rm app/assets/stylesheets/welcome.css.scss

Answer 6

Removed scaffolding for selected model:

bin/rails d scaffold <AccessControl> //model name