Greetings, I try to add a foreign key in one of my rails migrations in the following way: def self.up add_reference :categories, :items end This, strangely, leads to the following error during the migration: -- add_reference(:categories, :items) rake aborted! undefined method `add_reference' for # In the same way fails the code: def self.up change_table :categories do |t| t.references :items end end I recently upgraded to Rails 2.1.2, if this is relevant to my case. Does anyone have any pointers on how to solve this problem? Thanks in advance!
on 2008-11-18 23:17