Null Model Error

2009-10-16 Thread Peter Arnulf Lustig
I have a List-Component and after sending a Form-Request it shows me the error:

java.lang.IllegalStateException: Attempt to set model object on null model of 
component: mainPanel:taggingBereich:addTagging:taggingList
 at org.apache.wicket.Component.setDefaultModelObject(Component.java:3038)

That's the specific List

// Component
taggingList = new ListMultipleChoiceInteger(taggingList, choices, 
renderer).setMaxRows(10);
taggingList.setOutputMarkupId(true);

// Setting Model
choices.setObject(new ArrayListInteger(tagging.keySet()));

// Model-Variable
IModelList? extends Integer choices;

// IChoiceRenderer
renderer = new IChoiceRendererInteger() {
public Object getDisplayValue(Integer arg0) {
return tagging.get(arg0);
}

public String getIdValue(Integer arg0, int arg1) {
return arg0.toString();
}
};


choices = Model.of((ListInteger) new ArrayListInteger(tagging.keySet()));

The of Method is crossed out by eclipse due to some reason I can't 
recognize -- But it works.

Only after submitting the form I get this error (above)




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Re: Null Model Error

2009-10-16 Thread Md. Jahid Shohel
you need to set the model for the list.

On Fri, 2009-10-16 at 07:33 +, Peter Arnulf Lustig wrote:
 choices,


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AW: Null Model Error

2009-10-16 Thread Peter Arnulf Lustig
yes -- I do this here:
choices = Model.of((ListInteger) new ArrayListInteger(tagging.keySet()));




- Ursprüngliche Mail 
Von: Md. Jahid Shohel ja...@outscore.se
An: users@wicket.apache.org
Gesendet: Freitag, den 16. Oktober 2009, 9:53:01 Uhr
Betreff: Re: Null Model Error

you need to set the model for the list.

On Fri, 2009-10-16 at 07:33 +, Peter Arnulf Lustig wrote:
 choices,


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AW: AW: Null Model Error

2009-10-16 Thread Peter Arnulf Lustig
can anyone tell me how to use the list-component model properly?



- Ursprüngliche Mail 
Von: Peter Arnulf Lustig u...@yahoo.de
An: users@wicket.apache.org
Gesendet: Freitag, den 16. Oktober 2009, 9:55:19 Uhr
Betreff: AW: Null Model Error

yes -- I do this here:
choices = Model.of((ListInteger) new ArrayListInteger(tagging.keySet()));




- Ursprüngliche Mail 
Von: Md. Jahid Shohel ja...@outscore.se
An: users@wicket.apache.org
Gesendet: Freitag, den 16. Oktober 2009, 9:53:01 Uhr
Betreff: Re: Null Model Error

you need to set the model for the list.

On Fri, 2009-10-16 at 07:33 +, Peter Arnulf Lustig wrote:
 choices,


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Re: AW: Null Model Error

2009-10-16 Thread Pedro Santos
You have a list of tagging keys that user can select and a render to it, but
you don't have an model to receive the selection made on component. Consider
to use this contructor parsing an putTheUserSelectionHereModel

http://wicket.apache.org/docs/1.4/org/apache/wicket/markup/html/form/ListMultipleChoice.html#ListMultipleChoice%28java.lang.String,%20org.apache.wicket.model.IModel,%20org.apache.wicket.model.IModel,%20org.apache.wicket.markup.html.form.IChoiceRenderer%29

On Fri, Oct 16, 2009 at 6:52 AM, Peter Arnulf Lustig u...@yahoo.dewrote:

 can anyone tell me how to use the list-component model properly?



 - Ursprüngliche Mail 
 Von: Peter Arnulf Lustig u...@yahoo.de
 An: users@wicket.apache.org
 Gesendet: Freitag, den 16. Oktober 2009, 9:55:19 Uhr
 Betreff: AW: Null Model Error

 yes -- I do this here:
 choices = Model.of((ListInteger) new
 ArrayListInteger(tagging.keySet()));




 - Ursprüngliche Mail 
 Von: Md. Jahid Shohel ja...@outscore.se
 An: users@wicket.apache.org
 Gesendet: Freitag, den 16. Oktober 2009, 9:53:01 Uhr
 Betreff: Re: Null Model Error

 you need to set the model for the list.

 On Fri, 2009-10-16 at 07:33 +, Peter Arnulf Lustig wrote:
  choices,


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-- 
Pedro Henrique Oliveira dos Santos


AW: AW: Null Model Error

2009-10-16 Thread Peter Arnulf Lustig
wow - great information

But how can I create / define such a model -- I can't find anything in the 
wicket examples!



- Ursprüngliche Mail 
Von: Pedro Santos pedros...@gmail.com
An: users@wicket.apache.org
Gesendet: Freitag, den 16. Oktober 2009, 13:24:45 Uhr
Betreff: Re: AW: Null Model Error

You have a list of tagging keys that user can select and a render to it, but
you don't have an model to receive the selection made on component. Consider
to use this contructor parsing an putTheUserSelectionHereModel

http://wicket.apache.org/docs/1.4/org/apache/wicket/markup/html/form/ListMultipleChoice.html#ListMultipleChoice%28java.lang.String,%20org.apache.wicket.model.IModel,%20org.apache.wicket.model.IModel,%20org.apache.wicket.markup.html.form.IChoiceRenderer%29

On Fri, Oct 16, 2009 at 6:52 AM, Peter Arnulf Lustig u...@yahoo.dewrote:

 can anyone tell me how to use the list-component model properly?



 - Ursprüngliche Mail 
 Von: Peter Arnulf Lustig u...@yahoo.de
 An: users@wicket.apache.org
 Gesendet: Freitag, den 16. Oktober 2009, 9:55:19 Uhr
 Betreff: AW: Null Model Error

 yes -- I do this here:
 choices = Model.of((ListInteger) new
 ArrayListInteger(tagging.keySet()));




 - Ursprüngliche Mail 
 Von: Md. Jahid Shohel ja...@outscore.se
 An: users@wicket.apache.org
 Gesendet: Freitag, den 16. Oktober 2009, 9:53:01 Uhr
 Betreff: Re: Null Model Error

 you need to set the model for the list.

 On Fri, 2009-10-16 at 07:33 +, Peter Arnulf Lustig wrote:
  choices,


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 To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
 For additional commands, e-mail: users-h...@wicket.apache.org




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-- 
Pedro Henrique Oliveira dos Santos





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Re: AW: Null Model Error

2009-10-16 Thread Pedro Santos
at javadoc:
IModeljava.util.CollectionT model

But how can I create / define such a model ?

I have used org.apache.wicket.model.Model in one project for example
like:
new ListMultipleChoice(id, new Model(), choises, render)


On Fri, Oct 16, 2009 at 9:00 AM, Peter Arnulf Lustig u...@yahoo.dewrote:

 wow - great information

 But how can I create / define such a model -- I can't find anything in the
 wicket examples!



 - Ursprüngliche Mail 
 Von: Pedro Santos pedros...@gmail.com
 An: users@wicket.apache.org
 Gesendet: Freitag, den 16. Oktober 2009, 13:24:45 Uhr
 Betreff: Re: AW: Null Model Error

 You have a list of tagging keys that user can select and a render to it,
 but
 you don't have an model to receive the selection made on component.
 Consider
 to use this contructor parsing an putTheUserSelectionHereModel


 http://wicket.apache.org/docs/1.4/org/apache/wicket/markup/html/form/ListMultipleChoice.html#ListMultipleChoice%28java.lang.String,%20org.apache.wicket.model.IModel,%20org.apache.wicket.model.IModel,%20org.apache.wicket.markup.html.form.IChoiceRenderer%29

 On Fri, Oct 16, 2009 at 6:52 AM, Peter Arnulf Lustig u...@yahoo.de
 wrote:

  can anyone tell me how to use the list-component model properly?
 
 
 
  - Ursprüngliche Mail 
  Von: Peter Arnulf Lustig u...@yahoo.de
  An: users@wicket.apache.org
  Gesendet: Freitag, den 16. Oktober 2009, 9:55:19 Uhr
  Betreff: AW: Null Model Error
 
  yes -- I do this here:
  choices = Model.of((ListInteger) new
  ArrayListInteger(tagging.keySet()));
 
 
 
 
  - Ursprüngliche Mail 
  Von: Md. Jahid Shohel ja...@outscore.se
  An: users@wicket.apache.org
  Gesendet: Freitag, den 16. Oktober 2009, 9:53:01 Uhr
  Betreff: Re: Null Model Error
 
  you need to set the model for the list.
 
  On Fri, 2009-10-16 at 07:33 +, Peter Arnulf Lustig wrote:
   choices,
 
 
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  -
  To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
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 --
 Pedro Henrique Oliveira dos Santos





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-- 
Pedro Henrique Oliveira dos Santos


AW: AW: Null Model Error

2009-10-16 Thread Peter Arnulf Lustig
I thank you very much!



- Ursprüngliche Mail 
Von: Pedro Santos pedros...@gmail.com
An: users@wicket.apache.org
Gesendet: Freitag, den 16. Oktober 2009, 14:13:46 Uhr
Betreff: Re: AW: Null Model Error

at javadoc:
IModeljava.util.CollectionT model

But how can I create / define such a model ?

I have used org.apache.wicket.model.Model in one project for example
like:
new ListMultipleChoice(id, new Model(), choises, render)


On Fri, Oct 16, 2009 at 9:00 AM, Peter Arnulf Lustig u...@yahoo.dewrote:

 wow - great information

 But how can I create / define such a model -- I can't find anything in the
 wicket examples!



 - Ursprüngliche Mail 
 Von: Pedro Santos pedros...@gmail.com
 An: users@wicket.apache.org
 Gesendet: Freitag, den 16. Oktober 2009, 13:24:45 Uhr
 Betreff: Re: AW: Null Model Error

 You have a list of tagging keys that user can select and a render to it,
 but
 you don't have an model to receive the selection made on component.
 Consider
 to use this contructor parsing an putTheUserSelectionHereModel


 http://wicket.apache.org/docs/1.4/org/apache/wicket/markup/html/form/ListMultipleChoice.html#ListMultipleChoice%28java.lang.String,%20org.apache.wicket.model.IModel,%20org.apache.wicket.model.IModel,%20org.apache.wicket.markup.html.form.IChoiceRenderer%29

 On Fri, Oct 16, 2009 at 6:52 AM, Peter Arnulf Lustig u...@yahoo.de
 wrote:

  can anyone tell me how to use the list-component model properly?
 
 
 
  - Ursprüngliche Mail 
  Von: Peter Arnulf Lustig u...@yahoo.de
  An: users@wicket.apache.org
  Gesendet: Freitag, den 16. Oktober 2009, 9:55:19 Uhr
  Betreff: AW: Null Model Error
 
  yes -- I do this here:
  choices = Model.of((ListInteger) new
  ArrayListInteger(tagging.keySet()));
 
 
 
 
  - Ursprüngliche Mail 
  Von: Md. Jahid Shohel ja...@outscore.se
  An: users@wicket.apache.org
  Gesendet: Freitag, den 16. Oktober 2009, 9:53:01 Uhr
  Betreff: Re: Null Model Error
 
  you need to set the model for the list.
 
  On Fri, 2009-10-16 at 07:33 +, Peter Arnulf Lustig wrote:
   choices,
 
 
  -
  To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
  For additional commands, e-mail: users-h...@wicket.apache.org
 
 
 
 
  -
  To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
  For additional commands, e-mail: users-h...@wicket.apache.org
 
 
 
 
  -
  To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
  For additional commands, e-mail: users-h...@wicket.apache.org
 
 


 --
 Pedro Henrique Oliveira dos Santos





 -
 To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
 For additional commands, e-mail: users-h...@wicket.apache.org




-- 
Pedro Henrique Oliveira dos Santos





-
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