[jira] Commented: (WICKET-2428) AbstractSingleSelectChoice: custom resource key for null option

["Juergen Donnerstag (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/WICKET-2428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12759873#action_12759873 ] 

Juergen Donnerstag commented on WICKET-2428:
--------------------------------------------

May be I don't understand it properly, but I belief we can do that already. Please see javadoc for ComponentStringResourceLoader 

> AbstractSingleSelectChoice: custom resource key for null option
> ---------------------------------------------------------------
>
>                 Key: WICKET-2428
>                 URL: https://issues.apache.org/jira/browse/WICKET-2428
>             Project: Wicket
>          Issue Type: Improvement
>          Components: wicket
>    Affects Versions: 1.4.0
>            Reporter: Fridolin Jackstadt
>
> Is it possible to refactor AbstractSingleSelectChoice like shown below? To be able to override getNullOptionKey would give a great value for us.
> This would allow to have the display-values of null-options in a single properties file for whole project even if ids of some choices with different null-option display-values are equal.
> protected String getNullOptionKey() {
>   return getId() + ".nullValid";
> }
> if (isNullValid())
>       {
>           // Null is valid, so look up the value for it
>           String option = getLocalizer().getStringIgnoreSettings(getNullOptionKey(), this,
>               null, null);
>           if (Strings.isEmpty(option))
>           {
>               option = getLocalizer().getString("nullValid", this, "");
>           }
> ....

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