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https://issues.apache.org/jira/browse/ISIS-1117?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dan Haywood updated ISIS-1117:
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Fix Version/s: 1.11.0
> Allow using "marker" view models
> --------------------------------
>
> Key: ISIS-1117
> URL: https://issues.apache.org/jira/browse/ISIS-1117
> Project: Isis
> Issue Type: Improvement
> Components: Core: Viewer: Wicket
> Affects Versions: core-1.8.0
> Reporter: Martin Grigorov
> Assignee: Dan Haywood
> Priority: Trivial
> Fix For: 1.11.0
>
>
> From users@ mailing lists: http://markmail.org/message/nbkj3jkbmr6tjghk
> I tried to use a "marker" view model, i.e. a view model without any
> properties.
> I need it to trigger instantiation of a custom component(factory).
> I thought that I may put all the "properties" in the component, so the view
> model won't need to have them. It will be just a marker, like marker
> interfaces.
> This didn't work because of the code at
> https://github.com/apache/isis/blob/master/core/viewer-wicket/ui/src/main/java/org/apache/isis/viewer/wicket/ui/pages/entity/EntityPage.java#L124
> I will put the properties in the view model to overcome this check.
> Is this something that could be relaxed or this check has to stay there for
> some other functionality ?
> {code}
> if(*!specification.isViewModel() && *visibleAssociation.isEmpty()) {
> {code}
> seems to work fine with marker view model
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