Martin Grigorov created ISIS-1117:
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Summary: 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
>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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