You can use a QAbstractListModel to update the list model from QML. The QAbstractListModel provides an interface for accessing data from a list of items. It can be used to update the list model from QML by using the setData() method.
To update the list model from QML, you will need to create a QAbstractListModel subclass and implement the setData() method. The setData() method should take the index of the item to be updated and the new value for the item. You can then call the setData() method from QML to update the list model.
For example, if you have a list of strings, you can create a QAbstractListModel subclass and implement the setData() method as follows:
void MyListModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
if (index.isValid() && role == Qt::EditRole) {
int row = index.row();
QStringList list = data(index, Qt::DisplayRole).toStringList();
list[row] = value.toString();
setData(index, QVariant::fromValue(list), Qt::DisplayRole);
}
}
You can then call the setData() method from QML to update the list model. For example:
MyListModel {
id: myListModel
// ...
}
Button {
text: "Update List Model"
onClicked: {
myListModel.setData(myListModel.index(0, 0), "New Value", Qt.EditRole);
}
}
This will update the first item in the list model with the new value.
