I'm getting unexpected behavior when deleting a record with a foreign
key. I'm using the 0.2.5 rev 1712. When I delete a record that has a
private=True attribute in the FK relationship, SA tries to update the
record and set the FK to NULL instead of deleting the record.
Applicable code. I tried not to include too much code below.
*******************************************************************************
documents = Table('documents', metadata,
Column('id', INTEGER, primary_key=True),
Column('project_id', INTEGER,
ForeignKey(projects.c.id), nullable=False),
Column('efile_record_id', INTEGER, nullable=False),
Column('notes', TEXT),
Column('input_time', TIMESTAMP, timestamp_default, nullable=False),
schema=schemaname
)
class Document(object):
pass
mapper(Document, documents,
properties={'project':relation(Project, backref='documents',
private=True)}
)
# Some other code in another module ...
session.delete(document)
session.flush()
*******************************************************************************
Here is the error:
SQLError: (IntegrityError) null value in column "project_id" violates
not-null constraint
'UPDATE planreview.documents SET project_id=%(project_id)s WHERE
documents.id = %(documents_id)s' {'project_id': None, 'documents_id': 13}
Shouldn't this be a delete statement?
Randall
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