How to sort QTableView in Qt4 and up

Question

Code creates a single QTableView. The column sorting was enabled. When I click the column name (1,2 or 3 nothing happens). How to make this sorting work without using proxy model?

from PyQt4 import QtCore, QtGui
app = QtGui.QApplication([])

class Model(QtCore.QAbstractTableModel):
    def __init__(self):
        QtCore.QAbstractTableModel.__init__(self)
        self.items = [[1, 'one', 'ONE'], [2, 'two', 'TWO'], [3, 'three', 'THREE']]

    def flags(self, index):
        return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsEditable

    def rowCount(self, parent=QtCore.QModelIndex()):
        return 3 
    def columnCount(self, parent=QtCore.QModelIndex()):
        return 3

    def data(self, index, role):
        if not index.isValid(): return 

        if role in [QtCore.Qt.DisplayRole, QtCore.Qt.EditRole]:
            return self.items[index.row()][index.column()]

def onClick(index):
    tableView.openPersistentEditor(tableView.model().index(index.row(), index.column()))
    print 'clicked index:  %s'%index

tableModel=Model()
tableView=QtGui.QTableView() 
tableView.setModel(tableModel)
tableView.clicked.connect(onClick)
tableView.setSortingEnabled(True)

tableView.show()
app.exec_()

Answer 1

I am not a python developer, but it seems that there is no sort() method implemented in your model.

In C++, when you derive your custom model from the QAbstractItemModel (or QAbstractTableModel) you have to implement the QAbstractItemModel::sort() method in order to enable sorting.