Merge pull request bmentges#2 from dfalk/master

Method for items count and items summary added by dfalk. Thanks again dfalk. :)

Author: bmentges

cart/cart.py

@@ -68,6 +68,18 @@ def update(self, product, quantity, unit_price=None):
             )
         except models.Item.DoesNotExist:
             raise ItemDoesNotExist
+            
+    def count(self):
+        result = 0
+        for item in self.cart.item_set.all():
+            result += 1 * item.quantity
+        return result
+        
+    def summary(self):
+        result = 0
+        for item in self.cart.item_set.all():
+            result += item.total_price
+        return result
 
     def clear(self):
         for item in self.cart.item_set.all():