Am 01.07.2010 um 11:36 schrieb chaouche yacine:
Hi list,
There's one problem : the error I'm getting is not on the foreign
key constraint it's on the NOT NULL contraint.
This is because SA issues an update to the city, setting the country
to NULL. You can see that if you'd use my code that set the bind's
echo property to True.
Now honestly I don't know how to fix this, but this might help:
http://www.sqlalchemy.org/docs/05/mappers.html#using-passive-deletes
Passing passive_deletes=True to the OneToMany-relation might solve the
issue of trying to update child-relations.
Diez
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