Hi, This use case will work only when the DropDownChoice has a parent in the hierarchy with org.apache.wicket.model.IComponentInheritedModel, like org.apache.wicket.model.CompoundPropertyModel. In this case the dropdown will use a slot from its parent's IComponentInheritedModel.
On Thu, Sep 26, 2013 at 9:39 AM, Patrick Davids <patrick.dav...@nuboit.de>wrote: > Hi all, > > since I'm working with Wicket I am a bit confused about the Constructors > of DropDownChoice Class. > > DropDownChoice provides Constructors without any Model or ModelObject. > e.g. (id, List choices) > > This is logical in an use-case, for instance, having just a page with a > SelectBox and my first click is about to choose something. > And I may do not have any "parent" model object of the page, so I did > not bind my DropDownChoice by PropertyModel expressions. > > So, in such cases... > > Why Wicket always complaints about "try to set ModelObject of null model"? > > Yes, I explicitly decided to use DropDownChoice without a model. > Since nothing is chosen, the model object of the DropDownChoice is null. > The behavior I expect is, the model object is the chosen option (object) > after selecting one. > > But it seems, it does not work like this. > > Can someone please "light" me. :-) > > kind regards > Patrick > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > For additional commands, e-mail: users-h...@wicket.apache.org > >
