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class UniqueUserUrls < ActiveRecord::Migration
def self.up
# do last registered ones first, so the last ones get rubbish URLs
User.find(:all, :order => "id desc").each do |user|
user.update_url_name
user.save!
end
remove_index :users, :url_name
add_index :users, :url_name, :unique => true
end
def self.down
remove_index :users, :url_name
add_index :users, :url_name, :unique => false
end
end
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