cant reproduce. heres a test case of the above which passes:
from sqlalchemy import *
meta = BoundMetaData('sqlite://', echo=True)
tests = Table('tests',meta,
Column('id', Integer, primary_key=True),
Column('foo', String(30))
)
tests_state = Table('tests_state',meta,
Column('id', Integer, ForeignKey('tests.id'), primary_key=True),
Column('count', Integer, default=0)
)
meta.create_all()
class TestState(object):
pass
class Test(object):
pass
testStateMapper = mapper(TestState, tests_state)
testMapper = mapper(
Test, tests,
properties={'state': relation(TestState, uselist=False)}
)
sess = create_session()
test = Test()
test.state = TestState()
sess.save(test)
sess.flush()
assert test.state.count == 0
sess.clear()
test = sess.get(Test, 1)
test.state.count = test.state.count + 1
sess.flush()
sess.clear()
test = sess.get(Test,1)
assert test.state.count == 1
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