Hi Dan,

That's not the answer I hoped for ;-)

It looks like the ViewModels only work with persisted entities. Is that correct?

What I try to accomplish right now (as a work around) is to return a ViewModel 
from an action with the posted data from the action put into that viewmodel and 
than call some actions on that viewmodel. If it is possible to return a fresh 
viewmodel every time I return from an action, it looks a bit like a wizard. At 
least I can build some data model in memory and persist this model when ready. 
Should that be possible?

I will elaborate my wishes in the ticket you raised.

Wat is the use of a @NotPersistable-entity like described in [1]?

Thanks,
Erik

[1] 
http://isis.apache.org/more-advanced-topics/how-to-07-040-How-to-specify-that-an-object-should-not-be-persisted.html


On 06/09/2014 07:59 AM, Dan Haywood wrote:

Hi Erik,
Short answer is that we don't really (properly) support this.  And we
should.

I agree that @NotPersistable is confusing and its not clear what to use;
the right solution would be to implement a view model (currently: implement
the ViewModel interface), and then - optionally - write a custom
ComponentFactory for the Wicket viewer to render the wizard appropriately.

But the snag even with the above is that (currently) view models are
immutable; they support actions but their properties cannot be edited.

I can see the way forward on this; I don't think it's difficult, but it
will require a change in core and probably the wicket viewer also.

If you want then raise a ticket for this requirement, and sketch how you'd
like it to work.

Cheers
Dan



On 6 June 2014 17:40, Erik de Hair <e...@pocos.nl><mailto:e...@pocos.nl> wrote:



Ok, I've found the @NotPersistable annotation but don't know how to use
this. I get an error message saying the object is not persistent. Extended
my entity from AbstractDomainObject later, but that doesn't help.

Erik

On 06/06/2014 04:07 PM, Erik de Hair wrote:

Hi,

Is it in some way possible to create a wizard like form or open an action
with an action? I tried to return a not yet persisted object from an action
and hoped I could edit some properties and add some elements to collections
of the object before persisting it to the database...

Thanks,
Erik









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