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  1. Qt
  2. QTBUG-84107

Using object list (array) as a model unable to track changes

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Not Evaluated
    • Resolution: Duplicate
    • Affects Version/s: 5.14.2
    • Fix Version/s: None
    • Component/s: Quick: Core Declarative QML
    • Labels:
      None

      Description

      Docs for Repeater states that list of strings/objects could be used as a model:
      https://doc.qt.io/qt-5/qml-qtquick-repeater.html#delegate-prop

       

      I would like to extend the example with dynamic creation and addition of randomly spawned rectangles. In order to do that I'm adding and removing elements to my object list model.

       

      However the Repeater doesn't track these changes

      It's possible to force re-assignment of the model property and it makes Repeater react to these assignments but it definitely doesn't make what's expected – all the objects handled by Repeater are destroyed and new ones are created, instead of adding or removing just one.

       

        Attachments

          Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-82926 QML components which have model / delegate reset when model is updated

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported

          Suggestion - Public suggestions QTBUG-12117 Add support for JS arrays in ListModel

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Open
          is related to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-49983 Using a JavaScript Array of JS Objects as an itemview model doesn't work as expected

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-69771 Functions in QML model data not accessible

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-48981 ListView should support javascript arrays

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Task - A task that needs to be done. QTBUG-79263 Provide a replace function for QQmlListProperty

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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            Activity

              People

              Assignee:
              qt.team.quick.subscriptions Qt Quick and Widgets Team
              Reporter:
              romanvalov Roman Valov
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                Dates

                Created:
                Updated:
                Resolved:

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