Hi,
I hope sombody can help me whit this.

I've the next table, for instance:

customer = Table('customer', metadata,
     Column('id', Integer, primery_key=True),
     Column('name', String(50), nullable=False)
)

and....the class

class Customer(object):
      pass

and.. the mapper

mapper(Customer, customer)

Now, I want add a "virtual attribute" to my class which is not part of
my table, for example

class Customer(object)
     def __init__(self)
           self.selected = False

Then, I do a simple query:

cust = session.query(Customer).get(1)

but, when I want use....

cust.selected = True

An exception ocurr, the cust object have not 'selected' attribute


How can solve this?
Is possible do it?

Than in advance.


























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