Using the new QSortFilterProxyModel subclass of the core for the TableView.

mainwindow.h

@@ -16,6 +16,7 @@ QT_END_NAMESPACE
 
 class GenericCore;
 class TableModel;
+class GeneralSortFilterModel;
 class NewItemDialog;
 class EditItemDialog;
 
@@ -65,6 +66,7 @@ class MainWindow : public QMainWindow {
   // GenericCore* m_core;
   unique_ptr<GenericCore> m_core;
   shared_ptr<TableModel> m_tableModel;
+  shared_ptr<GeneralSortFilterModel> m_sortModel;
   QUndoStack* m_modelUndoStack;
   unique_ptr<QUndoView> m_modelUndoView;