[web2py] I wish I could use a virtualfield in IS_IN_DB

[Jose]

Hi

I have in my model:

tb_categorias = db.define_table('categorias',
    ...
)
class Categoria(object):
    def nombre(self):
         ...

tb_categorias.virtualfields.append(Categoria())
tb_categorias.format = '%(nombre)s'              #This does not work


tb_obras = db.define_table('obras',
    ...
)
#I wish I could do this:
tb_obras.categoria.requires = IS_IN_DB(db, tb_categorias.id, '%(nombre)s') 

José