Hi!

I'm getting AssertionError: Dependency rule tried to blank-out primary key 
column 'text_value.text_id' on instance '<TextValue at 0x7f6b260d9710>' 
error while trying to update row using association proxy ('values') like 
this:

session.add(Text(values={'pl': u'org', 'en': u'org'}))
text = session.query(Text).one()
text.values = {'pl': u'modified', 'en': u'modified'}
session.commit()


Working example is at 
https://gist.github.com/piotr-dobrogost/74073cf11006fb68e555
What am I doing wrong?


Best regards,
Piotr Dobrogost

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