2016-06-01 8:54 GMT+02:00 Elvis Stansvik <elvst...@gmail.com>: > Hi all, > > I've used QSortFilterProxyModel in the past, but it was quite a while > ago and now I'm a little confused by the advice given in the docs. > > The description of the dynamicSortFilter property [1] reads: > > "Note that you should not update the source model through the proxy > model when dynamicSortFilter is true. For instance, if you set the > proxy model on a QComboBox, then using functions that update the > model, e.g., addItem(), will not work as expected. An alternative is > to set dynamicSortFilter to false and call sort() after adding items > to the QComboBox. > > The default value is true." > > I can't remember this restriction from when I've worked with it > before, and in the class description, underneath the second code > snippet, it says: > > "Any changes made through the QSortFilterProxyModel are applied to the > original model." > > As if it is safe to update the model through the QSFPM at this point, > even if it is speaking of one where dynamicSortFilter is true (the > default). > > Surely it must be possible to use a QSFPM with dynamicSortFilter set > to true as the model of some view which also provides editing (and > consequently will make its changes through the QSFPM)? Or is that > simply not a supported use case? If I use dynamicSortFilter, must I > always make my changes to the source model?
As a simple concrete example, say I create a QStringListModel, wrap it in a QSFPM (leaving dynamicSortFilter enabled) and set that QSFPM as the model of a QListView with editing enabled. The docs make it sound like that's inadvisable (since the QListView will perform its editing through the dynamically sorted QSFPM). Is that right? Elvis > > Grateful for any advice, > Elvis > > [1] http://doc.qt.io/qt-5/qsortfilterproxymodel.html#dynamicSortFilter-prop > [2] http://doc.qt.io/qt-5/qsortfilterproxymodel.html#details _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
