Your error seems to be coming from the fact you do not have defined a person
model. Since web2py is a functional designed you must define person table
before you can reference it.

I use the following self-referential table and have never had a problem.

db.define_table('participant',
#... lots of other fields
          Field("referred_by", "reference participant"),
#... lots of other fields.
)

--
Thadeus




2010/11/11 Mirek Zvolský <zvol...@seznam.cz>

> >> Here's a link to the section in the book:
> >>
> http://www.web2py.com/book/default/chapter/06#Self-Reference-and-Aliases
>
> Yes, I know this, and from that reason I always use 'reference..'
> style syntax.
>
> However this is about very special foreign keys, which targets to same
> table (to the primary key in same table).
>
> And if there is some cycle in joins in the model (and of course it
> always is, except of very, very simple models), this will not help.
> And there is realy no solution for this in web2py ??
>

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