On Nov 12, 7:20 am, "Sergio Cambra .:: entreCables S.L. ::."
<[email protected]> wrote:
> On Viernes, 12 de Noviembre de 2010 12:59:22 odigity escribió:
>
> > Thanks for providing a practical solution. Having a little trouble
> > getting it to work, though.
>
> > It seems that the account_entity_id_form_column method isn't getting
> > called. I put a line in there that logs a test message, and it's not
> > showing up in the output.
>
> Do you get entity_id in your form? If you don't get it, add entity_id to
> config.columns.
Yes:
config.columns = [:entity_type, :entity_id, :balance]
Both columns show up in the list (thought entity_id is title
"Entity"). Still don't see account_entity_id_form_column being
invoked. :(
> > I have ActiveScaffold set up under an admin/ subdirectory, so the
> > controller is:
> > /app/controllers/admin/accounts_controller.rb
>
> > Just to be certain I got the location and naming right, I created two
> > helper modules, and pasted the method into both:
> > /app/helpers/accounts_helper.rb (Module AccountsHelper)
> > /app/helpers/admin/accounts_helper.rb (Module Admin::AccountsHelper)
>
> You have to use admin/accounts_helper if your controller is inside admin
> directory.
Cool, that's what I figured. I'll delete the other one.
> > Seems to make sense to me, since we're trying to make it a drop-down
> > box, but AS freaks out when do it.
>
> > Lastly, a theoretical question: Why couldn't AS be modified to look
> > at the models that are associated with :account as entities? Doesn't
> > Rails have both directions of the association available for
> > introspection?
>
> No, rails has no reverse association. AS tries to guess reverse association
> using class_name, but it's not possible with polymorphic association (it would
> try to get Entity class).
Ah... too bad.
> > Then AS could go and select all records in both tables
> > and include them in the drop-down box. That's ultimately what I'd
> > prefer, and would be some awesome default logic to include.
>
> It won't work, you won't be able to fill type and id foreign keys only with a
> form, you won't know what class is selected. Two chained select tags are
> needed.
>
> You could build a select tag with both tables setting a custom value which
> joins class name and id, and you should fill type and id fields in the
> controller, but it must be custom code for each app.
I see what you're saying.
-ofer
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