added order report to back office

back-office/app/models/cart.rb

@@ -4,7 +4,22 @@ class Cart < ActiveRecord::Base
 	belongs_to :user
 	belongs_to :delivery_destination
 
+  def delivery_cost
+    place = Place.by_code_or_default(delivery_destination.place)
+    if delivery_destination.instant_delivery
+      place.instant_delivery_price
+    else
+      place.delivery_price
+    end
+  end
 
-	
+  def total
+    sum = item_in_carts.inject (0) { |sum, iic| sum + (iic.price * iic.count) }
+    sum += delivery_cost
+  end
+
+  def confirmed_at
+    delivery_destination.updated_at.in_time_zone('Europe/Sarajevo')
+  end
 
 end

back-office/app/models/place.rb

@@ -521,4 +521,13 @@ class Place < ActiveRecord::Base
 
     return "<nepoznato mjesto>";
   end
+
+  def self.by_code_or_default(code)
+    # removes garbage and converts whitespace prefixed codes correctly - like " 71000" -> 71000 
+    valid_code = code.to_i.to_s 
+    place = Place.where(postal_code: valid_code).first
+    place ||= Place.where("postal_code is null or postal_code = ''").first
+    return place
+  end
+
 end