Ok, thanks for your help, guys. I finally figured out what you meant by
your last comments, and implemented one way to go about this. Not sure
if it's the "best" way, but it's certainly much cleaner than before.
Thanks!!
Just one question remaining.
What's the deal with getNestedModel( )?
It sounds useful, but that never gets invoked.
What is it for, and how would I use it?
Cheers,
Dave
On Tue, 2007-03-13 at 16:07 +0900, David Leangen wrote:
> :-)
>
> > if you disable a formcomponent then neither a set or get will be
> > called
>
>
> Yes. But it's not disabled, and get is being called. Just not set.
>
> I must be doing something wrong or missing something in the impl here...
> but I don't see what it is. :-(
>
>
> Cheers,
> Dave
>
>
>
>
>
> > Sorry for pulling you guys back to my mail issue. ;-)
> >
> > Since setObject() is not being called, I don't see how to
> > apply my
> > complex model to its children. I thought I could pull this off
> > with
> > setModel()... but it just ain't being called.
> >
> >
> > Ok, let's stick with the "person" object. The person has
> > attributes, and
> > one of these attributes may itself have attributes.
> >
> > For example:
> >
> > Person:
> > isSingle?
> >
> > if( isSingle )
> >
> > [ ] does dishes?
> > [ ] makes bed?
> >
> > else
> >
> > [ ] has kids?
> > [ ] walks dog?
> >
> > Whatever.
> >
> > Point is, if the isSingle attribute is "true", I want to
> > enable certain
> > checkboxes and bind those values DIRECTLY to the model. Same
> > goes if
> > isSingle is false.
> >
> > Right now, I collect a boolean for each value and set them
> > back
> > "manually" into my model, which seems really messy.
> >
> > Same thing for enabling/disabling my checkboxes above: I do
> > that
> > "manually" depending on the current value in the model.
> >
> >
> > What I'd really like to do is somehow bind all those controls
> > directly
> > to my model so I'm not duplicating parts of the model for each
> > control.
> >
> >
> > Any hints that would enlighten me on how to do this?
> >
> >
> > Thanks so much!!
> >
> >
> >
> > On Mon, 2007-03-12 at 22:58 -0700, Eelco Hillenius wrote:
> > > Maybe it is good to gather a couple of use cases and pros
> > and cons and
> > > start a separate thread?
> > >
> > > Eelco
> > >
> > > On 3/12/07, Igor Vaynberg <[EMAIL PROTECTED]> wrote:
> > > > ah, but if you modify a collection that is a model object
> > are you infact
> > > > "changing" the object? you are not changing the reference
> > itself but you are
> > > > doing something that has sideffects.
> > > >
> > > > eg lets say you have a dropdown choice, but what you want
> > is a collection of
> > > > ids not the objects. the easiest way is to have a model in
> > between that
> > > > translates a collection of objects to ids and back again.
> > but how to do that
> > > > if setobject() is never called?
> > > >
> > > > -igor
> > > >
> > > >
> > > >
> > > > On 3/12/07, Eelco Hillenius <[EMAIL PROTECTED]>
> > wrote:
> > > > >
> > > > > If you are not changing the object that is the subject
> > of the model, I
> > > > > see no reason why setObject should be called.
> > > > >
> > > > > Eelco
> > > > >
> > > > > On 3/12/07, Igor Vaynberg <[EMAIL PROTECTED] >
> > wrote:
> > > > > > actually we are inconsistent in some places and i have
> > been trying to
> > > > fix
> > > > > > it. what we mostly do is whenever we work with a
> > collection we clear it
> > > > and
> > > > > > repopulate it. but we never call setobject() on the
> > model which imho is
> > > > > > wrong. sometimes i have a model in between that
> > depends on setobject()
> > > > > > called whenever a property is updated because it does
> > some translation
> > > > and
> > > > > > its a lot easier to proxy a model then it is to proxy
> > a collection. just
> > > > my
> > > > > > 2c.
> > > > > >
> > > > > > -igor
> > > > > >
> > > > > >
> > > > > >
> > > > > > On 3/12/07, Eelco Hillenius
> > <[EMAIL PROTECTED]> wrote:
> > > > > > >
> > > > > > > > > > now all you have to do is
> > > > > > > > > >
> > > > > > > > > > LoadableDetachableModel person=new
> > LoadalbeDetachableModel(id);
> > > > > > > > > > new CheckBox(this, "cb", new
> > PersonCheckBoxModel(person));
> > > > > > > > > >
> > > > > > > > > > and everything magically works, hope it gives
> > you some ideas.
> > > > > > > >
> > > > > > > > Yes, it does indeed give me many ideas. Right now,
> > I'm trying to
> > > > figure
> > > > > > > > out the implementation details.
> > > > > > > >
> > > > > > > > While stepping through the code, I noticed that
> > the setObject()
> > > > method
> > > > > > > > of my IModel never gets called.
> > > > > > > >
> > > > > > > > When is this _supposed_ to be set, and why would
> > it not be called in
> > > > my
> > > > > > > > case?
> > > > > > >
> > > > > > > There's not always a need for setObject to be
> > called. I haven't read
> > > > > > > the whole thread, but in the above example, you work
> > on a property
> > > > > > > ('cb') of the person, so all you have to do
> > (probably) is do something
> > > > > > > with this updated object (like saving it). You would
> > only do setObject
> > > > > > > when you would provide a new person, and when the
> > getObject
> > > > > > > implementation wouldn't take care of that.
> > > > > > >
> > > > > > > Personally, I rarely use/ depend on setObject as
> > working with
> > > > > > > properties of objects is a very typical thing to
> > do.
> > > > > > >
> > > > > > > Hope this makes sense,
> > > > > > >
> > > > > > > Eelco
> > > > > > >
> > > > > > >
> > > > > >
> > > >
> >
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