zip_code.rb in earth-0.11.19

- old
+ new

@@ -4,9 +4,11 @@
   self.primary_key = "name"
   
   belongs_to :egrid_subregion,  :foreign_key => 'egrid_subregion_abbreviation'
   belongs_to :climate_division, :foreign_key => 'climate_division_name'
   belongs_to :state,            :foreign_key => 'state_postal_abbreviation'
+  has_many :electric_markets,   :foreign_key => 'zip_code_name'
+  has_many :electric_utilities, :through => :electric_markets
   
   def country
     Country.united_states
   end
   