finished price updating

back-office/app/models/item.rb

@@ -1,4 +1,11 @@
 class Item < ActiveRecord::Base
+
+  CSV_COL = {
+    :code => 0,
+    :input_price => 1,
+    :list_price => 2
+  }
+
   belongs_to :unit
   has_many :multi_media_descriptions
   belongs_to :sub_category
@@ -97,4 +104,25 @@ class Item < ActiveRecord::Base
     return full_report
   end
 
+  def self.update_prices(path)
+    nonexistent_codes = []
+
+    Item.transaction do
+      CSV.foreach(path) do |row|
+        code = row[CSV_COL[:code]].strip
+        item = Item.find_by_code(code)
+        if item.nil?
+          nonexistent_codes << code
+        else
+          item.current_input_price = row[CSV_COL[:input_price]]
+          item.list_price = row[CSV_COL[:list_price]]
+          item.save!
+        end
+      end
+    end
+    puts "Nonexistent codes: "
+    puts nonexistent_codes.join("\n")
+  end
+
+
 end