rails undo scaffold

To undo a scaffold in Ruby on Rails, you need to follow these steps:

  1. Open your terminal or command prompt and navigate to your Rails application's directory.
  2. Run the following command to generate a migration file that will remove the scaffold's database table:

rails generate migration DropTableName

Replace "TableName" with the actual name of the table created by the scaffold.

  1. Open the generated migration file in your preferred text editor. It should be located in the db/migrate directory.

  2. In the migration file, you will see a change method. Inside this method, add the following line to drop the table:

drop_table :table_name

Replace "table_name" with the actual name of the table created by the scaffold.

  1. Save the migration file and exit your text editor.

  2. In your terminal or command prompt, run the following command to execute the migration:

rails db:migrate

This will remove the scaffold's table from your database.

  1. Next, you need to remove the corresponding model file. Navigate to the app/models directory and delete the file with the same name as the scaffold's model.

  2. If you have any controllers and views that were generated by the scaffold, you can delete them as well. Navigate to the app/controllers directory and delete the controller file. Similarly, navigate to the app/views directory and delete the corresponding views folder.

  3. Finally, don't forget to remove any routes that were added by the scaffold. Open the config/routes.rb file in your preferred text editor and delete the routes related to the scaffold.

That's it! The scaffold has been successfully undone, and all related files, database tables, and routes have been removed from your Rails application.