with_polymorphic() needs to be called first.

On Feb 25, 2009, at 9:54 AM, Vladimir Iliev wrote:

>
> InvalidRequestError: Query.with_polymorphic() being called on a Query
> with existing criterion
>
>
> a...@svilendobrev.com написа:
>> thequery().with_polymorphic( list of classes ) ?
>>
>> On Wednesday 25 February 2009 15:43:54 Vladimir Iliev wrote:
>>> hi,
>>>
>>> how can i filter dynamic relation's query to instances of a given
>>> class, including the subclasses ?
>>>
>>> i tried something like
>>>
>>> part.documents.filter(Part.documents.of_type(CADDocument))
>>>
>>> but i'm getting
>>>
>>> ArgumentError: filter() argument must be of type
>>> sqlalchemy.sql.ClauseElement or string
>>>
>>> thanks in advance
>>>
>>>
>>
>>>
>>
>
>
> >


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