I seem to have stumbled upon a bug, but perhaps I'm just using
MapperExtension wrong. Anyway, here's some code that doesn't work:
-----------
from sqlalchemy import *
from sqlalchemy.orm import MapperExtension
global_session = create_session()
metadata = BoundMetaData('mysql://[EMAIL PROTECTED]/napa')
test_table = Table('test', metadata,
Column('tid', Integer, primary_key = True),
Column('modified', DateTime),
Column('foo', String(1024)))
class Test(object):
def __init__(self, foo):
self.foo = foo
class ModifiedMapper(MapperExtension):
#whenever something is changed, this will make sure the modified
is set
def before_update(self, mapper, connection, instance):
instance.modified = func.now()
testmapper = mapper(Test, test_table, extension=ModifiedMapper)
def main():
test = Test("foo")
global_session.save(test)
global_session.flush()
global_session.delete(test)
global_session.flush()
if __name__=="__main__":
main()
---------
And here's the stack trace:
Traceback (most recent call last):
File "test.py", line 33, in ?
main()
File "test.py", line 25, in main
test = Test("foo")
File "build/bdist.linux-i686/egg/sqlalchemy/orm/mapper.py", line
548, in init
File "build/bdist.linux-i686/egg/sqlalchemy/orm/mapper.py", line
1365, in <lambda>
File "build/bdist.linux-i686/egg/sqlalchemy/orm/mapper.py", line
1372, in _do
TypeError: unbound method get_session() must be called with
ModifiedMapper instance as first argument (got nothing instead)
Anybody have any idea what that all means? Am I doing something
wrong or is it a bug?
-Michael
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