Hi, I have this strange bug or problem...
I have a basic class like this mapped to a table with the same name.
Metatype is a relation to the metatype object.
class MetaData(DBObject):
def __init__(self, metatype, value, item):
self.metatype = metatype
self.item = item
self.value = value
class MetaType(DBObject):
def __init__(self, name, parent=None, offset=None):
self.parent = parent
self.offset = offset
self.name = name
Now when I create a MetaData object like this I get the following
error:
>>> nameMetaType = MetaType('name')
>>> product = Product(Decimal('20.00'), Decimal('15.00'))
>>> Session.commit()
>>> MetaData(nameMetaType, 'Koen', product)
Traceback (most recent call last):
method testMetabug in test_connection.py at line 16
MetaData(nameMetaType, 'Koen', product)
method init in attributes.py at line 1025
oldinit(instance, *args, **kwargs)
TypeError: __init__() takes at most 3 arguments (4 given)
That seems odd to me, as it clearly takes 4 arguments: self, metatype,
value, item. But I tried it anyway with 3 arguments to see what it
did:
>>> MetaData(nameMetaType, 'Koen')
Traceback (most recent call last):
method testMetabug in test_connection.py at line 16
MetaData(nameMetaType, 'Koen')
method init in attributes.py at line 1025
oldinit(instance, *args, **kwargs)
method __init__ in schema.py at line 1070
self.reflect()
method reflect in schema.py at line 1193
available = util.OrderedSet(bind.engine.table_names(schema,
AttributeError: 'MetaType' object has no attribute 'engine'
Extra info: The item is a polymorphic mapper to product, employee
etc... I use scoped_session and created my mappers with
Session.mapper.
If you need more info let me know...
Thanks,
Koen
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