If you have a detachable model with roomID is the thing you store
if roomID is filled in then you do a query because you where editting an existing Room object
if roomID == null then you just create a new Room object.
Ofcourse if you have a multi page form then you need to store the complete Room object in the roomId (or what you call it then)
So still it can be very easy the same model.
And see my example if you really want to query always for the parents model, then just don't use the parents model directly in the propertymodels
but a model that i described that has a reference to the parent component instead of a parents model. So it can be very easily done what you want.
On 9/14/05, Ralf Ebert <[EMAIL PROTECTED]> wrote:
Hi,
> i never had the need to have 2 special models for new and existing
> objects
> What is then the difference?
> The only thing a model really does it getting the modelObject. So
> what you put in that can be an existing one or just a new Room()
> Please give a better usecase for this
but "getting the modelObject" could differ. An existing object can be
detached, so a LoadableDetachableModel could be used, while a new
object may not be detached and needs to be stored in the session. I
know this could be done with a DetachableModel itself and so it's a
bad usecase.
I'm just wondering why there is no way bind child objects and their
properties in exactly the same way in which normal properties are
bound - automatically using the id of a container in between... But
for me it's ok to use the PropertyModel as well, I just thought I
should avoid this as replacing the model is allowed...
Regards,
Ralf
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