order_adjustment.rb in unidom-order-0.3

- old
+ new

@@ -2,14 +2,24 @@
 
 class Unidom::Order::OrderAdjustment < ActiveRecord::Base
 
   self.table_name = 'unidom_order_adjustments'
 
+  include Unidom::Common::Concerns::ModelExtension
+
   validates :amount, presence: true, numericality: { less_than: 1000000000, greater_than: -1000000000 }
 
   belongs_to :adjusted, polymorphic: true
 
-  scope :adjusted_by, ->(adjusted) { where adjusted: adjusted }
+  scope :adjusted_is, ->(adjusted) { where adjusted: adjusted }
 
-  include Unidom::Common::Concerns::ModelExtension
+  def self.adjust!(adjusted, amount, adjustment_factor_code = 'FRGT')
+    adjustment = self.adjusted_is(adjusted).adjustment_factor_coded_as(adjustment_factor_code).valid_at.alive.first
+    if adjustment.present?
+      adjustment.amount = amount
+      adjustment.save!
+    else
+      create! adjusted: adjusted, amount: amount, adjustment_factor_code: adjustment_factor_code
+    end
+  end
 
 end