QML ListModel: are multiple ListModels allowed to live on screen? - qt

Question

GridView {
id: gridv
model: ListModel {
id: modelone;
}
delegate: componentId
}
Rectangle {
id: whattheproblem
color: red
ListView {
id: listv
model: ListModel {
id: modeltwo;
}
delegate: anotherComponentId
}
}
I can do gridv.model.append(element), it adds elements to displayed GridView.
But, I can't do listv.model.append(element), it doesn't draw anything (the component code is valid, though), but at the same time, modeltwo.count shows that element is added to model. Rectangle was added to check the layout (it's managed by RowLayout currently), and it seems to be working; other layout things (think anchor, x/y/z) do not help.
QT 5.3, QtQuick 2..
From my point of view, I can only think now, that modelone associates all the ListModel logics to GridView it's created from, so ListModel can't work with ListView anymore. Sounds illogical, but already spent two hours on this.
is there a necessity to create custom Model's, when dealing with multiple views?

Answer 1

I think the problem is with the delegate, since i tried your example with some modifications and it worked.
Following is the code:
Item {
width: 200
height: 200
GridView {
id: gridv
width: 200
height: 100
model: ListModel {
id: modelone;
}
delegate: Text { text: name }
}
Rectangle {
id: whattheproblem
anchors.top: gridv.bottom
ListView {
id: listv
model: ListModel {
id: modeltwo;
}
delegate: Text { text: name }
}
}
Button {
anchors.left: parent.left
anchors.bottom: parent.bottom
text: "Add to Grid"
onClicked: gridv.model.append({name: "grid"})
}
Button {
anchors.right: parent.right
anchors.bottom: parent.bottom
text: "Add to List"
onClicked: listv.model.append({name: "list"})
}
}
I tried it with Qt 5.3.1