Symfony app - how to add calculated fields to Propel objects?

Question

What is the best way of working with calculated fields of Propel objects?

Say I have an object \"Customer\" that has a corresponding table \"customers\" and each column

Answer 1

Add an attribute "orders_count" to a Customer, and then write something like this:

class Order {
...
  public function save($conn = null) {
    $customer = $this->getCustomer();
    $customer->setOrdersCount($customer->getOrdersCount() + 1);
    $custoner->save();
    parent::save();
  }
...
}

You can use not only the "save" method, but the idea stays the same. Unfortunately, Propel doesn't support any "magic" for such fields.