1
If your component holds a reference to a model, then it is responsible to
detach it:
public void detachModels() {
super.detachModels();
this.objectModel.detach();
}
In most cases you can use each model as the default model of some component, so
detachment is taken care of automatically:
public SomePanel(String id, IModel<List<Object>> model) {
super(id, model);
}
2
new Model(...) is fine if you want to keep the model object serialized along
with the component. LoadableDetachableModel is recommended if you are able to
re-load the model object from somewhere in the next request.
Panel B should detach the model, since the model was passed to the Panel and it
can't know whether the outside will keep a reference to it.
Panel A doesn't have to detach the model, since it can expect Panel B to take
care of that.
Regards
Sven
On 09/19/2013 10:43 AM, dlutowskik wrote:
I have two questions about models in Wicket.
1. In some panel I have IModel<List<Object>> objectModel or IModel
objectModel and this model is created as
LoadableDetachableModel<List<Object>> or LoadableDetachableModel. Is it
good approach? If yes do I need to detach this model in onDetach() method?
2. I have two panels A and B. Panel B is created in panel A and it needed
some model. In panel A there is empty object. How should I create model with
this empty object - new Model(new Object()), new LoadableDetachableModel() {
.. load() {return new Object()}}? In which panel should I detach this model
in Panel B in which this model is used or in Panel A in which this model was
created?
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