Created
March 20, 2014 15:33
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| def update_inventory | |
| if self.item_id_changed? | |
| old_item = Item.find(self.item_id_was) | |
| old_item.quantityInStock -= self.quantity_was | |
| old_item.save! | |
| elsif self.quantity_changed? | |
| quantity_diff = self.quantity - self.quantity_was | |
| self.item.quantityInStock += quantity_diff | |
| end | |
| end |
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