t.belongs_to in migration

Question

I was using Ryan Bates\'s source code for railscasts #141 in order to create a simple shopping cart. In one of the migrations, he lists

class CreateProducts         


        

Answer 1

$ rails g migration AddUserRefToProducts user:references 

this generates:

class AddUserRefToProducts < ActiveRecord::Migration
  def change
    add_reference :products, :user, index: true
  end
end

http://guides.rubyonrails.org/active_record_migrations.html#creating-a-standalone-migration