Hello,
here is an abstract code example of my problem with my application.
####################
# StartPage
####################
class StartPage extends WebPage {
public StartPage(PageParameters parameters) {
add(new SearchForm("searchForm", parameters));
}
private class SearchForm extends StatelessForm {
public SearchForm(String id, final PageParameters params) {
super(id);
init();
}
private void init() {
Button startButton = new Button("button_search") {
@Override
public void onSubmit() {
PageParamerters p = new PageParameters();
// some additional checks with the parameters
....
setResponsePage(MyFormPage.class, p);
}
}
}
}
}
#################
# MyFormPage
#################
class MyFormPage extends WebPage {
public MyFormPage(PageParameters parameters) {
super(parameters);
Model<MySearchModel> model = new Model<MySearchModel>() {
MySearchModel msm = new MySearchModel();
@Override
public MySearchModel getObject() {
return msm;
}
@Override
public void setObject(MySearchModel newModel) {
this.msm = newModel;
}
}
CompundPropertyModel<MySearchModel> cpm = new
CompoundPropertyModel<MySearchModel>(model);
add(new AdvancedSearchForm("asForm", cpm));
}
private class AdvancedSearchForm extends StatelessForm<MySearchModel> {
private String name = null;
public AdvancedSearchForm (String id, IModel<MySearchModel> model) {
super(id, model);
init(model);
}
private void init(IModel<MySearchModel> model) {
IModel<List<String>> classes = new
LoadableDetachableModel<List<String>>() {
@Override
public List<String> load() {
List<String> classes = HelperClass.getClasses();
Collections.sort(classes);
return classes;
}
}
IChoiceRenderer<Object> rendererClasses = new IChoiceRenderer<Object>() {
public Object getDisplayValue(Object obj) {
return obj;
}
public String getIdValue(Object obj, int index) {
return obj.toString();
}
};
CheckBoxMultipleChoice<String> classesChoice =
new CheckBoxMultipleChoice<String>("classes",
classes,
rendererClasses);
add(classesChoice);
TextField<String> tf = new TextField<String>("name", new
PropertyModel<String>(this, "name"));
add(tf);
add(new Button("searchbutton_search") {
@Override
public void onSubmit() {
makeSubmit();
}
});
}
/**
* Do the submit and got to the response page
*/
private void makeSubmit() {
MySession s = (MySession)getSession();
MySearchModel modelObject = this.getModelObject();
if (!s.mySearchModelExists(modelObject.hashCode())) {
s.setMySearchModel(modelObject);
}
PageParameters p = new PageParameters();
// following method creates parameters from the model
p = MyParameterHelper.preparePageParameters(p, modelObject);
setResponsePage(MyFinalPage.class, p);
}
}
}
####################
# MySearchModel
####################
public class SearchModel implements Serializable {
private String name = null;
private List<String> classes = null;
public void setName(String newName) {
name = newName;
}
public void setClasses(List<String> newClasses) {
classes = newClasses;
}
public String getName() {
return name;
}
public List<String> getClasses() {
return classes;
}
}
The process:
(0) I open the Opera Browser.
(1) I click on the button of the StatelessForm (SearchForm) in the StartPage
class.
(2) The MyFormPage site is displayed.
(3) I select some classes and click the button in the AdvancedSearchForm.
(4) The MyFinalPage site is displayed.
(5) I open the Firefox Browser.
(6) I see the StartPage and click the button in the SearchForm.
(7) The MyFormPage is displayed and the classes from step (3) are selected.
(8) Additionally, I added a System.out.println(model.toString) before the line:
CompundPropertyModel<MySearchModel> cpm = new
CompoundPropertyModel<MySearchModel>(model);
and looked into the Catalino.out logs. You can see that this is directly after
the
initilization of the: Model<MySearchModel> model = new Model<MySearchModel>()
-> the logs tell me that the classes from step (3) are in the model
=> You can see in the model above that the classes are initialized with null.
Puh.
This is my problem. I hope that this code example gives a good imagination
of my problem.
I do not know why the classes from step 3 are in the model after a new
initialization.
I would be very thankful for a solution.
Thanks,
Andre
On Tue, 3 Jul 2012 20:16:13 +0200
Andre Schütz <[email protected]> wrote:
> There is one important information that I had forgotten to
> mention. The link on my start page is not a link. It is a button
> from within a form.
>
> Andre
>
> On Tue, 3 Jul 2012 11:41:36 +0200 (CEST)
> [email protected] wrote:
>
> > Hello,
> >
> > thanks for the answers. At the moment I am not able to access my code but
> > let
> > me explain the code in detail and give you some additional examples. I think
> > the idea with the stateful behavior could be right but I do not understand
> > the
> > reason.
> >
> > In detail.
> >
> > - I have a starting page where a Link is constructed that depending on the
> > available
> > PageParameters links to the second page with or without PageParameters:
> >
> > p.. PageParameters
> >
> > setResponsePage(MyPage2.class, p) or setResponsePage(MyPage2.class) or
> >
> > - After clicking the link on the starting page, the MyPage2 will be opened
> > and
> > the constructor adds the elements to the page. A Form will be added and
> > gets
> > a Model that is created in the constructor:
> >
> > MyModel model = new MyModel();
> >
> > The MyModel has two fields.
> > class MyModel {
> > private String text;
> > private List<String> classes;
> > public void setText ..
> > public void setClasses...
> > public String getText ...
> > public List<String> getClasses...
> > }
> >
> > The "classes" field is pre-filled with 3 entries in the MyModel class.
> >
> > Before the end of the constructor, my Form is added with:
> > add(new MyForm("id", new CompoundPropertyModel(model)));
> >
> > When I submit the form, the MyPage3 is opened and the values from
> > the MyForm are used.
> >
> > When I click back to my starting page and click on the link to MyPage2,
> > the selected values from the first click to this page are filled in the
> > MyModel. I printed the values of MyModel directly after the line:
> > MyModel model = new MyModel()
> > Normally, the pre-filled values should be in the classes variable. BUT ...
> > I have the selected values from the first call of the MyPage2.
> > That's my miracle :)
> >
> > Thanks for any additional help
> > Andre
> >
> > ----- Original Message -----
> > From: [email protected]
> > To: [email protected]
> > Date: 03.07.2012 07:44:54
> > Subject: Re: Model is not created
> >
> >
> > > On Mon, Jul 2, 2012 at 11:45 PM, Andre Schütz <[email protected]> wrote:
> > >> Hello,
> > >>
> > >> I have a problem with the creation of a model in one of my pages.
> > >> It works as follows:
> > >>
> > >> I have a link that uses setResponsePage(new MyPage(parameters)) on the
> > >> click
> > >
> > > I'd recommend to use setResponsePage(MyPage.class, parameters) instead
> > > in this case. This way you will have a nice looking url and the page
> > > may stay stateless if there are no stateful components/behaviors in
> > > it.
> > > If you know the parameters earlier then you can even use
> > > BookmarkablePageLink("id", MyPage.class, parameters) - this will save
> > > you a http redirect.
> > >
> > >> with parameters as PageParameters.
> > >> At the MyPage site, the constructor creates a:
> > >> IModel<MyModel> model = new IModel<MyModel>() {
> > >> public void setObject ..
> > >> public MyModel getObject..
> > >> }
> > >>
> > >> This variable is used to create a CompoundPropertyModel for a Form.
> > >>
> > >> The first time when I click on my link to the MyPage site, everything
> > >> is fine. At the second time, the MyModel variable is not empty. The
> > >> variable is filled with the selected values from the first time when
> > >> I clicked on the link to the MyPage site.
> > >>
> > >> I do not understand this behavior. Normally, the MyModel variable
> > >> should be empty and not filled with the last selection.
> > >>
> > >> Has someone an idea?
> > >>
> > >> Thanks,
> > >> Andre
> > >>
> > >> --
> > >> Andre Schütz <[email protected]>
> > >>
> > >> ---------------------------------------------------------------------
> > >> To unsubscribe, e-mail: [email protected]
> > >> For additional commands, e-mail: [email protected]
> > >>
> > >
> > >
> > >
> > > --
> > > Martin Grigorov
> > > jWeekend
> > > Training, Consulting, Development
> > > http://jWeekend.com
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: [email protected]
> > > For additional commands, e-mail: [email protected]
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: [email protected]
> > For additional commands, e-mail: [email protected]
>
>
> --
> Andre Schütz <[email protected]>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [email protected]
> For additional commands, e-mail: [email protected]
--
Andre Schütz <[email protected]>
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