On Wed, Jul 22, 2009 at 6:59 PM, Jonathan Lundell <jlund...@pobox.com>wrote:
> On Jul 21, 2009, at 9:14 PM, Yarko Tymciurak wrote:
>
> There is a section in the new book draft which covers Self-Reference and
> Aliases (self-reference notation was added, I believe, after the first
> version went to print).
>
>
> Yes, I've read it. What I'm saying is that it ought to be extended to
> include a two-table cross-reference example.
>
You think that's necessary? would be additionally helpful??
>
>
> On Tue, Jul 21, 2009 at 10:53 PM, Jonathan Lundell <jlund...@pobox.com>wrote:
>
>>
>> On Jul 21, 2009, at 8:49 PM, Yarko Tymciurak wrote:
>>
>> > There are two formats for declaring a reference:
>> >
>> > ....
>> > db.Field('owner', db.other_table) # this must have other_table
>> > already defined, or it is a Python error;
>> > ...
>> > db.Field('owner', 'reference other_table') # this is delayed
>> > evaluation, and what you would use to have two tables cross link
>> > each other;
>> >
>>
>> This could use a little more detail in the manual, which talks about
>> it in terms of self-reference, but doesn't really explain the
>> mechanism, or mention the cross-reference usage. IIRC.
>>
>
>
> >
>
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