Ok. What I would need is a collection_class when defining the
relation.
On Nov 28, 1:30 pm, Ronald Lew <[EMAIL PROTECTED]> wrote:
> I have a customer table which has a 1-to-n relation with a phone
> table. The phone table has the following columns: integer id, string
> number, and boolean is_fax. Is there a way to override the phones
> collection so I can return a boolean if the customer contains at least
> 1 phone record with a is_fax set to True.
>
> For example:
>
> class Customer: pass
> class Phone: pass
>
> session.mapper(Customer, customers_table,
> properties={'phones':relation(Phone, backref='customers'})
>
> my_customer = Customer.query.filter_by(id=1).first()
>
> # I want it to return True if at least one phone in the list has
> is_fax = True
> # so I'm thinking of somehow wrapping or overriding the python list
> class
> my_customer.phones.has_fax()
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