Hi Vláďa, 2011/3/3 Vláďa <[email protected]> > I implemented the behavior that the model returns None if the UI requests > items that do not exist. But as I expected I only got rid of the errors, but > the incorrect behavior (not all items or empty items are shown) remains. I > was hoping that Qt 4.7.2 might fix the problem, but it didn't change anything. > > I do believe it is not bug in my code, but there is something wrong in either > PySide or Qt/QML. Could someone confirm it?
Can you provide a minimal example that demonstrates your problem? If it's a bug, please file it at bugs.pyside.org (yay for the new domain name ;). The way I do it in gPodder currently is simply a list model with a list of QObject subclasses: http://repo.or.cz/w/gpodder.git/blob/refs/heads/tres:/src/gpodder/qmlui/__init__.py#l133 The data() function is defined like this: 154 def data(self, index, role): 155 if index.isValid(): 156 if role == 0: 157 return self.get_object(index) 158 elif role == 1: 159 return self.get_object(index).qsection 160 return None And get_object() is also similarly trivial: 148 def get_object(self, index): 149 return self._objects[index.row()] Here, self._objects is a simple python list that contains my objects. If the list changes, I simply replace the _objects contents and call reset() - it would obviously be more performant if you did fine-grained changes to that list. That said, it does not happen often for my use case, and as the QObjects in the list have notifyable properties, and my list delegate uses these properties, the list can be updated (by changing the properties on the objects) without the abstract list model knowing about it. HTH :) Thomas _______________________________________________ PySide mailing list [email protected] http://lists.openbossa.org/listinfo/pyside
