-class UserPreference < ActiveRecord::Base
+# == Schema Information
+#
+# Table name: user_preferences
+#
+# user_id :bigint(8) not null, primary key
+# k :string not null, primary key
+# v :string not null
+#
+# Foreign Keys
+#
+# user_preferences_user_id_fkey (user_id => users.id)
+#
+
+class UserPreference < ApplicationRecord
+ self.primary_keys = "user_id", "k"
+
belongs_to :user
+
+ validates :user, :presence => true, :associated => true
+ validates :k, :v, :length => 1..255, :characters => true
end