obsolete.ChilliProject/db/migrate/020_add_role_position.rb

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class AddRolePosition < ActiveRecord::Migration
def self.up
add_column :roles, :position, :integer, :default => 1, :null => false
Role.find(:all).each_with_index {|role, i| role.update_attribute(:position, i+1)}
end
def self.down
remove_column :roles, :position
end
end