Thank you, Anthony!
For me was important to be sure that I make no other mistake and proper way 
to fix it is with delayed setting of represent=..

Based on your answer, this works excellent for me:
db.place.place_id.represent = lambda id, row: id and id.place or ""
(handled for None + different parameters order)



Dne pondělí 6. června 2016 14:27:42 UTC+2 Anthony napsal(a):
>
> The "represent" attribute of the field cannot be set automatically in this 
> case because the table has not been defined at the time the field is 
> created. So you must set the "represent" attribute yourself:
>
> represent=lambda r, id: id.place
>
> Anthony
>
>

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