Ruby on Rails 8: Generators

Generate a model

Create a model, its migration and a test.

bin/rails generate model Article title:string body:text

Generate a controller

Create a controller with index and show actions and their views.

bin/rails generate controller Articles index show

Generate a full CRUD scaffold

Create model, controller, views, routes and tests in one go.

bin/rails generate scaffold Post title:string body:text

Generate a migration

Create a migration that adds a column. Rails reads the intent from the name.

bin/rails generate migration AddSlugToArticles slug:string

Generate authentication

Add the built-in authentication system introduced in Rails 8: sessions, users and password reset.

bin/rails generate authentication

Generate a background job

Create an Active Job class.

bin/rails generate job ProcessImage

Undo a generator

Remove the files a generator created.

bin/rails destroy model Article

Caution: Deletes the generated files. It does not roll back a migration you have already run.