Hello,
I'm using a column defined as:
discounts = Column(ARRAY(Discount))
Where Discount is a UserDefinedType that just passes the value through
to/from Psycopg2 (which uses a namedtuple for the discounts value):
class Discount(UserDefinedType):
""" SQLAlchemy type that passes through values to be handled by a
psycopg2
extension type.
"""
type_name = 'Discount'
def get_col_spec(self):
return self.type_name
def bind_processor(self, dialect):
return None
def result_processor(self, dialect, coltype):
return None
def is_mutable(self):
return True
def copy_value(self, value):
return copy.copy(value)
Previously (in 0.7.9) the discounts value on a model instance would be an
list of discount types (which are namedtuples). Now SQLAlchemy seems to
convert the Discount type into a list resulting in a two-dimensional list
for the discounts value instead of a list of namedtuples. The documentation
doesn't mention this side-effect of the array improvements, is this a bug
in 0.8.0b?
Thanks,
Jason
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