Problem dynamically adding items in a ListModel

[Cyrille de Brebisson]

Hello,

I have a list model with a number of elements:

    items: ListModel {
        id: pagesModel
        ListElement {
            pageTitle: qsTr ("Settings")
            pageIcon: "qrc:/Resources/settings.svg"
            action: function() {
                stackView.push(Qt.resolvedUrl("/qml/Settings.qml"))
            }
        }
        ...
    }

I want to dynamically add elements to the model. So I am doing:

                    pagesModel.append({"pageTitle": qsTr ("Title"),
                                       "pageIcon": "qrc:/Resources/stuff.svg",
                                       "action": function() { stackView.push(Qt.resolvedUrl("/qml/Stuff.qml"), {"deviceId":linkId}) },
                                      });

However, at execution time, I get the following error:
<Unknown File>: Can't assign to existing role 'action' of different type [VariantMap -> Function]

Any idea what I might be doing wrong there?

Thanks,
Cyrille

[dheerendra]

You can use the dynamicRoles:true. In the beginning don't have any elements. Dynamically add all of them. It should work. Not sure why this error though.

[Tom_H]

@Cyrille-de-Brebisson I don't think you can assign a function as a value. ListElement role values must be simple constants, i.e. strings, numbers, or booleans.

Edit: Deleted wrong information as pointed out by @dheerendra

[Cyrille de Brebisson]

Hello,
One solution that I found was to setup the "action" AFTER the append. This seemed to work...
Why, I do not know. Another issue is that since append does not seem to return the position of insertion, what happends if another thread does an insert just after. my count-1 will refer to what at this point?

                pagesModel.append({"pageTitle": qsTr (ttle),
                                   "pageIcon": icon,
                                   "model": m2
                                  });
                pagesModel.setProperty(pagesModel.count-1, "action", function() { console.log("My Action"); stackView.push(Qt.resolvedUrl(url), {"deviceId":linkId}) }); // for some reason I can no do this in the object creation!

Cyrille

[dheerendra]

@Tom_H Starting from 2.11 you can assign the functions.