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https://issues.apache.org/jira/browse/TAPESTRY-2278?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12580838#action_12580838
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Howard M. Lewis Ship commented on TAPESTRY-2278:
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I'm still thinking there may be more than "user error" going on here, so I'll
leave this open a bit longer. It does sound to me like blank value handlng
with Select is not quite right; it should be pushing a null into the value
parameter I think, rather than throwing an NPE.
> BlankOption value in Select component should be configurable
> ------------------------------------------------------------
>
> Key: TAPESTRY-2278
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2278
> Project: Tapestry
> Issue Type: Improvement
> Components: tapestry-core
> Affects Versions: 5.0.11
> Reporter: Sven Homburg
> Fix For: 5.0.12
>
>
> i often use the option value of a select component holding id's for database
> entities.
> the id's type are most numeric values, so my problem is:
> i attached an ajax request that sends each change from the select component.
> the following method catch the event
> @OnEvent(component = "inputProject", value = "change")
> JSONValue projectIdChanged(long projectId)
> {
> .....
> return mapper.toJSON(resultList);
> }
> if the user select the blank option
> the component throws a NumberFormatException
> so it were cool, if i declare the empty option value by my self.
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