you need the "secondary" table explicit in a many-to-many join:
Information.mapper.add_property('datas', relation(Data.mapper,
rel_table,
primaryjoin=info_table.c.pk==rel_table.c.info_pk,
secondaryjoin=rel_table.c.data_pk==data_table.c.pk))
On Apr 23, 2006, at 8:39 AM, Gambit wrote:
Hey All,
I'm trying to reproduce, almost exactly, the many to many
relationship in the
docs (search for the 'secondaryjoin' keyword) and am encountering an
ArgumentError:
sqlalchemy.exceptions.ArgumentError: Property 'datas' specified
with secondary
join condition but no secondary argument.
I've attached a working test case to this email, and the debug
output. As
you'll note, it's virtually identical to the example in the
documentation.
Operating environment is:
Windows XP SP2
Cygwin
Python 2.4.3
SQLALchemy 0.1.6 rev 1320
SQLite
Cheers,
-G
<many_to_many_test.log>
<many_to_many_test.py>
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