gistfile1.rb

class Address < ActiveRecord::Base
  named_scope :primary, :conditions => { :primary => true }
  named_scope :not_primary, :conditions => { :primary => false }
end



>> a = Address.primary.new
=> #<Address id: nil, address: nil, zip_code: nil, city: nil, primary: true, group_id: nil, user_id: nil, country_id: nil, created_at: nil, updated_at: nil>

>> a = Address.not_primary.new
=> #<Address id: nil, address: nil, zip_code: nil, city: nil, primary: false, group_id: nil, user_id: nil, country_id: nil, created_at: nil, updated_at: nil>