Hi, I was wondering what method might be used (assuming it's possible)
to redefine a column's attribute type after the mapping has already
been made? Specifically I have the following scenario:
from sqlalchemy import *
from sqlalchemy.orm import mapper
metadata = MetaData()
orders = Table(
"orders", metadata,
Column(id, Integer, primary_key=True),
Column(quantity, Numeric(8,3)),
)
class Order(object):
pass
mapper(Order, orders)
# ... then later ...
from sqlalchemy.orm import class_mapper
class_mapper(Order).get_property('quantity').update_to_integer_type()
Obviously that last method doesn't exist, but I would like something
along those lines. Basically I want to type-cast the column at the
ORM layer instead of everywhere it appears in the UI. I can't just
pass Integer to the Column definition because that's happening
elsewhere in another package. Thanks in advance for any suggestions.
Lance
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