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  1. Isis
  2. ISIS-1117

Allow using "marker" view models

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Trivial
    • Resolution: Fixed
    • Affects Version/s: core-1.8.0
    • Fix Version/s: 1.11.0
    • Component/s: Core: Viewer: Wicket
    • Labels:
      None

      Description

      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 ?

      if(*!specification.isViewModel() && *visibleAssociation.isEmpty()) {
      

      seems to work fine with marker view model

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            • Assignee:
              Unassigned
              Reporter:
              mgrigorov Martin Grigorov
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                Updated:
                Resolved: