Ruby on Rails - How can I use UUID as a simple column in my project?

Question

I want to use UUID as a column from the table Address, but I don`t want to use it as a primary key. Is it possible? How can I do it?

Answer 1

To use UUID the first thing you need to do is to enable it on a migration

rails g migration EnableUUID

class EnableUuid < ActiveRecord::Migration[7.1]
  def change
    enable_extension 'pgcrypto'
  end
end

Now we have to run migrations rake db:migrate

Now you can create a new field

rails g migration AddUuidToUsers

class AddUuidToUsers < ActiveRecord::Migration[7.1]
  def change
    add_column :users, :uuid, :uuid, default: "gen_random_uuid()", null: false
  end
end

For non PG databases please look at the post by spickermann I hope that this helps