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  1. Qt
  2. QTBUG-79342

Allow binding to members of JavaScript objects and arrays

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      Currently the following binds a to the initial value of b.c, but doesn't update a when b.c is updated. This is highly surprising and runs counter to our understanding of bindings:

      QtObject {
    property var b: ({c : 10})
    property var a: b.c

    signal somethingHappened
    onSomethingHappened: function() { ++b.c }
}

      The same effect can be seen for JavaScript arrays in var properties. We should either not allow such bindings in the first place (syntax for declarative one-time assignment might come in handy), or, preferably, properly update the binding when the source changes.

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            qtqmlteam Qt Qml Team User
            ulherman Ulf Hermann
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