can you provide a very simple and pared down test case using table metadata 
only?


On Nov 5, 2011, at 6:41 AM, botz wrote:

> version 0.7.3.
> 
> I have tables with foreign keys defined, and the orm mapping (with
> relationships corresponding to the foreign keys)  works fine with
> autoload=True on the tables.
> 
> If I persist the metadata then with pickle, and then reload the app
> using pickled metadata and autoload=False, I get the following:
> 
> sqlalchemy.exc.ArgumentError: Could not locate any foreign-key-
> equated, locally mapped column pairs for primaryjoin condition
> 'client_statuses.client_status_code = clients.client_status_code' on
> relationship Client.status.  Ensure that the referencing Column
> objects have a ForeignKey present, or are otherwise part of a
> ForeignKeyConstraint on their parent Table, or specify the
> foreign_keys parameter to this relationship.  For more relaxed rules
> on join conditions, the relationship may be marked as viewonly=True.
> 
> Error occurs for both values of extend_existing.
> 
> Seems to be a regression from 0.6 where it worked ok.
> 
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