Dave Howorth wrote:
>>> And something still needs to be done about the
>>> $classmetadata->{cgi} auto-creation. I have it commented out in my
>>> version of Maypole::View::Base. If you have any significant ammount
>>> of real data it causes extreme slowness.
>>
>>
>> Agreed, but it depends on your data. I think the problem is that
>> CDBI::AsForm->to_cgi (which is what populates classmetadata.cgi)
>> creates the HTML for all the columns (disregarding Essentials). I
>> suppose that's a pretty sensible default since it makes it very easy
>> to get started with Maypole. You just need an easy way of tuning
>> it/turning it off without resorting to sublassing the model. After
>> all, in M::V::TT at least, you can still do this:
>>
>> [% object.to_field('column', 'select').as_HTML %]
>
>
> I was confused for a minute here, until I realized there are two
> separate topics under discussion.
Separate, but related.
> The first one is the classmetadata and I think you're both agreed that
> it would be nice to have a means to turn it off. Somehow making it
> evaluate lazily would be another option. Ironic perhaps, but turning it
> into an object is my first thought :)
>
> But the second topic is Brian's original problem, of the slow select
> generation, and it's the to_field method (or rather its _to_select
> helper) that causes his problem. So I don't think that calling it by
> hand in the template is a solution! It seems to me that it would be good
> for Brian's code to live inside _to_select.
My point was really, that if you can turn off classmetadata.cgi then you
can still call to_field() on the columns which don't require large lookups.
I'm not sure that Brian's code needs to be in _to_select, because the
->retrieve_all() should only populate the Essentials columns. OTOH,
someone mentioned earlier that the Essentials may not map directly to
what you want in the AsForm lookups. Class::DBI::TempEssential may be a
solution to that though.
--simonflk
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