I have a tableview with takes a qsortfilterproxymodel and is filtered by a particular name.

I have subclassed the qsortfilterproxymodel
Qt Code: 
  1. class FilterProxyModel : public QSortFilterProxyModel
  2. {
  3. 	Q_OBJECT
  4. public:
  5. 	FilterProxyModel(QObject *parent = 0);
  6.  
  7. 	void moveUp( const int itemIndex);
  8. 	void moveDown( const int itemIndex);
  9. };
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and here's the implementation
Qt Code: 
  1. FilterProxyModel ::FilterProxyModel (QObject *parent) :
  3. {
  4.  
  5. }
  6.  
  7. void FilterProxyModel ::moveUp(const int itemIndex)
  8. {
  9. 	if(itemIndex > 0 && itemIndex < rowCount())
  10. 	{
  11. 		beginMoveRows(QModelIndex(), itemIndex, itemIndex, QModelIndex(),
  12. 					  itemIndex - 1);
  13. 		moveRow(QModelIndex(), itemIndex, QModelIndex(), itemIndex - 1);
  14. 		endMoveRows();
  15. 	}
  16. }
  17.  
  18. void FilterProxyModel ::moveDown(const int itemIndex)
  19. {
  20. 	if(itemIndex >= 0 && itemIndex < rowCount() - 1)
  21. 	{
  22. 		beginMoveRows(QModelIndex(), itemIndex, itemIndex, QModelIndex(),
  23. 					  itemIndex + 2);
  24. 		moveRow(QModelIndex(), itemIndex, QModelIndex(), itemIndex + 2);
  25. 		endMoveRows();
  26. 	}
  27. }
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Here's how the model implemented
Qt Code: 
  1. m_Model = new FilterProxyModel(this);
  2. m_Model ->setSourceModel(partiesModel);
  3. m_Model ->setFilterRegExp(QRegExp("party", Qt::CaseInsensitive, QRegExp::FixedString));
  4. m_Model ->setFilterKeyColumn(PartyModel::Action);
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I want to move the items using a push button, when i call the function the move doesn't happen. Could you tell me what I'm missing?