db.define_table('some',
SQLField('name', 'string'),
SQLField('parent', 'referece some'))
On Feb 20, 6:01 pm, Jaime Barciela <[email protected]> wrote:
> Hello all,
>
> I have not found answers for these two questions in the manual or the
> site:
>
> 1.- In a many-to-many relationship you end up with a "friendship" kind
> of table, how can you avoid duplicates in that table without defining
> a custom index?
>
> 2.- A typical -- not the only one -- implementation of a tree in a
> RDBMS is a table with a foreign key pointing to its own primary key. I
> tried something like this:
>
> db.define_table('some',
> SQLField('name', 'string'),
> SQLField('parent', db.some))
>
> but I get an error because db.some is not defined yet when referenced
> by 'parent'.
>
> How can you implement references to self in the DAL?
>
> Thanks!
> Jaime
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