add production

sale.py

@@ -44,3 +44,10 @@ class Line(metaclass=PoolMeta):
         super(Line, self).on_change_product()
         if self.product.pizza:
             self.pizza = self.sale.pizza_number
+
+    def get_production(self):  
+        "Return production for the sale line"
+        Production = super(Line, self).get_production()
+        #Production.bom = self.product.template.boms.id
+
+        return Production