Great! Thank you very much guys. =)
Em sexta-feira, 7 de junho de 2013 16h29min55s UTC-3, Anthony escreveu:
>
> {{for data in list:}}
>
> <tr>
>> <td>{{=data.user_name}}</td>
>> <td>{{=("%(name)s" %data.user_city)}}</td>
>> <td>{{=("%(name)s" %data.user_state)}}</td>
>
>
> Above, '%(name)s' % data.user_city results in data.user_city.name being
> filled into the string. data.user_city is a DAL Reference object -- it
> stores the ID of the referenced record, but when you do
> data.user_city.name, it does a recursive
> select<http://web2py.com/books/default/chapter/29/06#Recursive-selects>and
> retrieves the value in the "name" field of the referenced record. So,
> the above code will result in two additional db selects for every record in
> "list". If there are a lot of records, you might want to go with the join
> method, which just does a single select.
>
> Anthony
>
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