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)
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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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
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
-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
-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
: 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
I thank you very much!
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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
