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views:

44

answers:

1
+1  Q: 

SQL Alchemy related Objects Error

A: 

I believe you should not call mapper(). When you use declarative_base, you define the table, the class and the mapping at once, in a shorthand style.

I suggest you remove the call to mapper().

codeape  2010-04-14 14:07:54
If I remove the mapper(), I get an UnmappedInstanceError: "UnmappedInstanceError: Class 'MappingTablesScenario.GUI_SCENARIO' is not mapped"
alex  2010-04-14 15:09:38
Could you post some code that reproduces that error?
codeape  2010-04-15 20:33:10

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