QSortFilterProxyModel by column value

Example of table model data

I have a gui with a tabWidget and inside each I have a tableview. Each tab describes a folder (see column type) with subdirs from which I pull the data. I want to have one main model that drives all views by attaching a QSortFilterProxy Model inbetween each tableview that filters the main model for the "type" of each individual TableView (passed into the subclass RenderTypeProxyModel). Bonus: Ideally, they should be sorted as well, so that the most recent view (see date column) comes out on top.
Here is my current version but the table remains blank for a reason I can't figure out:

import sys

import os

from datetime import datetime

from pprint import pprint

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

pathToProject = "/run/media/centos7/Data/Projects/Programming/Pipeline/SampleProject"

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        QtCore.QAbstractTableModel.__init__(self, parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



    def rowCount(self, parent):

        return len(self.__exportData)

    def columnCount(self, parent):

        return len(self.__horizontalHeaders)



    def data(self, index, role): #Returns the data stored under the given role for the item referred to by the index.

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            return value



    def headerData(self, section, orientation, role):

        if role == QtCore.Qt.DisplayRole:

            if orientation == QtCore.Qt.Horizontal:

                if section < len(self.__horizontalHeaders):

                    return self.__horizontalHeaders[section]

                else:

                    return "not implemented"



def tableSetup(tableView):

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)

    tableView.setSortingEnabled(True)



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel): #Custom Proxy Model

    def __init__(self, type, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.__type = type



    def filterAcceptsRow(self, row, parent): #returns true if the given row should be included in the model

        model = self.sourceModel()

        index = model.index(row, 3, parent)

        if model.data(index,QtCore.Qt.DisplayRole) == type:

            return True

        else:

            return False



if __name__ == '__main__':

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    #exportData = #insert sample data list of lists here for testing



    tableView = QtWidgets.QTableView()

    tableView.show()



    model = ExportTableModel(exportData,horizontalHeaders)

    proxyModel = RenderTypeProxyModel("img-prv")

    proxyModel.setSourceModel(model)

    tableView.setModel(proxyModel)



    tableSetup(tableView)

    sys.exit(app.exec_())

Here is sample data to use for debugging: https://pastebin.com/AB1XvKju
Just feed it into the exportData variable inside the __main__ method.

edited Nov 15 '18 at 17:42

eyllanesc

82.9k103360

asked Nov 15 '18 at 17:28

jnt

227

add a comment |

Example of table model data

import sys

import os

from datetime import datetime

from pprint import pprint

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

pathToProject = "/run/media/centos7/Data/Projects/Programming/Pipeline/SampleProject"

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        QtCore.QAbstractTableModel.__init__(self, parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



    def rowCount(self, parent):

        return len(self.__exportData)

    def columnCount(self, parent):

        return len(self.__horizontalHeaders)



    def data(self, index, role): #Returns the data stored under the given role for the item referred to by the index.

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            return value



    def headerData(self, section, orientation, role):

        if role == QtCore.Qt.DisplayRole:

            if orientation == QtCore.Qt.Horizontal:

                if section < len(self.__horizontalHeaders):

                    return self.__horizontalHeaders[section]

                else:

                    return "not implemented"



def tableSetup(tableView):

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)

    tableView.setSortingEnabled(True)



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel): #Custom Proxy Model

    def __init__(self, type, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.__type = type



    def filterAcceptsRow(self, row, parent): #returns true if the given row should be included in the model

        model = self.sourceModel()

        index = model.index(row, 3, parent)

        if model.data(index,QtCore.Qt.DisplayRole) == type:

            return True

        else:

            return False



if __name__ == '__main__':

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    #exportData = #insert sample data list of lists here for testing



    tableView = QtWidgets.QTableView()

    tableView.show()



    model = ExportTableModel(exportData,horizontalHeaders)

    proxyModel = RenderTypeProxyModel("img-prv")

    proxyModel.setSourceModel(model)

    tableView.setModel(proxyModel)



    tableSetup(tableView)

    sys.exit(app.exec_())

Here is sample data to use for debugging: https://pastebin.com/AB1XvKju
Just feed it into the exportData variable inside the __main__ method.

edited Nov 15 '18 at 17:42

eyllanesc

82.9k103360

asked Nov 15 '18 at 17:28

jnt

227

add a comment |

Example of table model data

import sys

import os

from datetime import datetime

from pprint import pprint

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

pathToProject = "/run/media/centos7/Data/Projects/Programming/Pipeline/SampleProject"

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        QtCore.QAbstractTableModel.__init__(self, parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



    def rowCount(self, parent):

        return len(self.__exportData)

    def columnCount(self, parent):

        return len(self.__horizontalHeaders)



    def data(self, index, role): #Returns the data stored under the given role for the item referred to by the index.

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            return value



    def headerData(self, section, orientation, role):

        if role == QtCore.Qt.DisplayRole:

            if orientation == QtCore.Qt.Horizontal:

                if section < len(self.__horizontalHeaders):

                    return self.__horizontalHeaders[section]

                else:

                    return "not implemented"



def tableSetup(tableView):

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)

    tableView.setSortingEnabled(True)



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel): #Custom Proxy Model

    def __init__(self, type, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.__type = type



    def filterAcceptsRow(self, row, parent): #returns true if the given row should be included in the model

        model = self.sourceModel()

        index = model.index(row, 3, parent)

        if model.data(index,QtCore.Qt.DisplayRole) == type:

            return True

        else:

            return False



if __name__ == '__main__':

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    #exportData = #insert sample data list of lists here for testing



    tableView = QtWidgets.QTableView()

    tableView.show()



    model = ExportTableModel(exportData,horizontalHeaders)

    proxyModel = RenderTypeProxyModel("img-prv")

    proxyModel.setSourceModel(model)

    tableView.setModel(proxyModel)



    tableSetup(tableView)

    sys.exit(app.exec_())

Here is sample data to use for debugging: https://pastebin.com/AB1XvKju
Just feed it into the exportData variable inside the __main__ method.

edited Nov 15 '18 at 17:42

eyllanesc

82.9k103360

asked Nov 15 '18 at 17:28

jnt

227

Example of table model data

import sys

import os

from datetime import datetime

from pprint import pprint

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

pathToProject = "/run/media/centos7/Data/Projects/Programming/Pipeline/SampleProject"

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        QtCore.QAbstractTableModel.__init__(self, parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



    def rowCount(self, parent):

        return len(self.__exportData)

    def columnCount(self, parent):

        return len(self.__horizontalHeaders)



    def data(self, index, role): #Returns the data stored under the given role for the item referred to by the index.

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            return value



    def headerData(self, section, orientation, role):

        if role == QtCore.Qt.DisplayRole:

            if orientation == QtCore.Qt.Horizontal:

                if section < len(self.__horizontalHeaders):

                    return self.__horizontalHeaders[section]

                else:

                    return "not implemented"



def tableSetup(tableView):

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)

    tableView.setSortingEnabled(True)



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel): #Custom Proxy Model

    def __init__(self, type, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.__type = type



    def filterAcceptsRow(self, row, parent): #returns true if the given row should be included in the model

        model = self.sourceModel()

        index = model.index(row, 3, parent)

        if model.data(index,QtCore.Qt.DisplayRole) == type:

            return True

        else:

            return False



if __name__ == '__main__':

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    #exportData = #insert sample data list of lists here for testing



    tableView = QtWidgets.QTableView()

    tableView.show()



    model = ExportTableModel(exportData,horizontalHeaders)

    proxyModel = RenderTypeProxyModel("img-prv")

    proxyModel.setSourceModel(model)

    tableView.setModel(proxyModel)



    tableSetup(tableView)

    sys.exit(app.exec_())

Here is sample data to use for debugging: https://pastebin.com/AB1XvKju
Just feed it into the exportData variable inside the __main__ method.

python python-2.7 qtableview pyside2 qsortfilterproxymodel

edited Nov 15 '18 at 17:42

eyllanesc

82.9k103360

asked Nov 15 '18 at 17:28

jnt

227

edited Nov 15 '18 at 17:42

eyllanesc

82.9k103360

asked Nov 15 '18 at 17:28

jnt

227

edited Nov 15 '18 at 17:42

eyllanesc

82.9k103360

edited Nov 15 '18 at 17:42

eyllanesc

82.9k103360

edited Nov 15 '18 at 17:42

eyllanesc

82.9k103360

asked Nov 15 '18 at 17:28

jnt

227

asked Nov 15 '18 at 17:28

jnt

227

asked Nov 15 '18 at 17:28

jnt

227

add a comment |

1 Answer
1

active

oldest

votes

The error is caused because type is a reserved word in python:

if model.data(index,QtCore.Qt.DisplayRole) == type:

you must use self.__type.

On the other hand if you want to sort the data by date it is not necessary to enable setSortingEnabled(), just use sort().

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        super(ExportTableModel, self).__init__(parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



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

        return len(self.__exportData)



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

        return len(self.__horizontalHeaders)



    def data(self, index, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            return value



    def headerData(self, section, orientation, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole and orientation == QtCore.Qt.Horizontal:

            if section < self.columnCount():

                return self.__horizontalHeaders[section]

            return "not implemented"



def tableSetup(tableView):

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel): #Custom Proxy Model

    def __init__(self, _type, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.__type = _type



    def filterAcceptsRow(self, row, parent):

        _type = self.sourceModel().index(row, 3, parent).data()

        return _type == self.__type



    def lessThan(self, left, right):

        fmt = "yyyy-MM-dd hh:mm:ss"

        left_data = self.sourceModel().data(left)

        right_data = self.sourceModel().data(right)

        return QtCore.QDateTime.fromString(left_data, fmt) < QtCore.QDateTime.fromString(right_data, fmt)



if __name__ == '__main__':

    import sys

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    exportData = # ...

    model = ExportTableModel(exportData, horizontalHeaders)

    tab_widget = QtWidgets.QTabWidget()

    for _type in allowedExportTypes:

        tableView = QtWidgets.QTableView()

        c = horizontalHeaders.index("date")

        tableSetup(tableView)

        proxy = RenderTypeProxyModel(_type, tableView)

        proxy.setSourceModel(model)

        proxy.sort(c, QtCore.Qt.AscendingOrder)

        tableView.setModel(proxy)

        tab_widget.addTab(tableView ,_type)



    tab_widget.show()

    sys.exit(app.exec_())

Update:

In the next part I have made improvements to your original code avoiding overwriting unnecessary methods and adding a delegate:

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class DateDelegate(QtWidgets.QStyledItemDelegate):

    def initStyleOption(self, option, index):

        super(DateDelegate, self).initStyleOption(option, index)

        option.text = index.data().toString("yyyy-MM-dd hh:mm:ss")



class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        super(ExportTableModel, self).__init__(parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



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

        return len(self.__exportData)



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

        return len(self.__horizontalHeaders)



    def data(self, index, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            header = self.headerData(column, QtCore.Qt.Horizontal)

            if header == "date":

                value = QtCore.QDateTime.fromString(value, "yyyy-MM-dd hh:mm:ss")

            return value



    def headerData(self, section, orientation, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole and orientation == QtCore.Qt.Horizontal:

            if section < self.columnCount():

                return self.__horizontalHeaders[section]

            return "not implemented"



def create_tableview():

    tableView = QtWidgets.QTableView()

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)

    return tableView



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel):

    def __init__(self, c_type, _type, c_date, model, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.setSourceModel(model)

        self.setFilterKeyColumn(c_type)

        self.setFilterFixedString(_type)

        self.sort(c_date, QtCore.Qt.AscendingOrder)





if __name__ == '__main__':

    import sys

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    exportData = # ...

    c_date = horizontalHeaders.index("date")

    c_type = horizontalHeaders.index("type")

    tab_widget = QtWidgets.QTabWidget()

    for _type in allowedExportTypes:

        tableView = create_tableview()

        tab_widget.addTab(tableView ,_type)

        proxy = RenderTypeProxyModel(c_type, _type, c_date, model, tableView)

        tableView.setModel(proxy)

        delegate = DateDelegate(tableView)

        tableView.setItemDelegateForColumn(c_date, delegate)



    tab_widget.show()

    sys.exit(app.exec_())

edited Nov 15 '18 at 18:45

answered Nov 15 '18 at 18:18

eyllanesc

82.9k103360

Yes, you're correct. I read the code at least 10 times and it never spotted the type error. Sometimes it just needs another pair of eyes. Could you go a bit more into detail about sorting? Is this done inside the proxy model or in the tableview widget and how would you implement it? Thanks you so far :)

– jnt
Nov 15 '18 at 18:27

@jnt Have you tried my solution ?, already implemented the filter and the order, now I'm working on simplifying more things in your code.

– eyllanesc
Nov 15 '18 at 18:30

I have been searching through the qt documentation but haven't been able to find the sort() method. I'm highly interested in the improvements to my code as well, as I am probably able to learn something from that. Thank you! Edit: Ah, just discovered sort () inside the QSortFilterProxy model doc.

– jnt
Nov 15 '18 at 18:40

Ok, I marked it as correct answer. Still I am eager to learn about the improvements mentioned in your earlier answer. Have a great day :)

– jnt
Nov 15 '18 at 18:45

@jnt Check my update

– eyllanesc
Nov 15 '18 at 18:46

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1 Answer
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1 Answer
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oldest

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The error is caused because type is a reserved word in python:

if model.data(index,QtCore.Qt.DisplayRole) == type:

you must use self.__type.

On the other hand if you want to sort the data by date it is not necessary to enable setSortingEnabled(), just use sort().

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        super(ExportTableModel, self).__init__(parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



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

        return len(self.__exportData)



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

        return len(self.__horizontalHeaders)



    def data(self, index, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            return value



    def headerData(self, section, orientation, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole and orientation == QtCore.Qt.Horizontal:

            if section < self.columnCount():

                return self.__horizontalHeaders[section]

            return "not implemented"



def tableSetup(tableView):

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel): #Custom Proxy Model

    def __init__(self, _type, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.__type = _type



    def filterAcceptsRow(self, row, parent):

        _type = self.sourceModel().index(row, 3, parent).data()

        return _type == self.__type



    def lessThan(self, left, right):

        fmt = "yyyy-MM-dd hh:mm:ss"

        left_data = self.sourceModel().data(left)

        right_data = self.sourceModel().data(right)

        return QtCore.QDateTime.fromString(left_data, fmt) < QtCore.QDateTime.fromString(right_data, fmt)



if __name__ == '__main__':

    import sys

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    exportData = # ...

    model = ExportTableModel(exportData, horizontalHeaders)

    tab_widget = QtWidgets.QTabWidget()

    for _type in allowedExportTypes:

        tableView = QtWidgets.QTableView()

        c = horizontalHeaders.index("date")

        tableSetup(tableView)

        proxy = RenderTypeProxyModel(_type, tableView)

        proxy.setSourceModel(model)

        proxy.sort(c, QtCore.Qt.AscendingOrder)

        tableView.setModel(proxy)

        tab_widget.addTab(tableView ,_type)



    tab_widget.show()

    sys.exit(app.exec_())

Update:

In the next part I have made improvements to your original code avoiding overwriting unnecessary methods and adding a delegate:

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class DateDelegate(QtWidgets.QStyledItemDelegate):

    def initStyleOption(self, option, index):

        super(DateDelegate, self).initStyleOption(option, index)

        option.text = index.data().toString("yyyy-MM-dd hh:mm:ss")



class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        super(ExportTableModel, self).__init__(parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



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

        return len(self.__exportData)



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

        return len(self.__horizontalHeaders)



    def data(self, index, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            header = self.headerData(column, QtCore.Qt.Horizontal)

            if header == "date":

                value = QtCore.QDateTime.fromString(value, "yyyy-MM-dd hh:mm:ss")

            return value



    def headerData(self, section, orientation, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole and orientation == QtCore.Qt.Horizontal:

            if section < self.columnCount():

                return self.__horizontalHeaders[section]

            return "not implemented"



def create_tableview():

    tableView = QtWidgets.QTableView()

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)

    return tableView



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel):

    def __init__(self, c_type, _type, c_date, model, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.setSourceModel(model)

        self.setFilterKeyColumn(c_type)

        self.setFilterFixedString(_type)

        self.sort(c_date, QtCore.Qt.AscendingOrder)





if __name__ == '__main__':

    import sys

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    exportData = # ...

    c_date = horizontalHeaders.index("date")

    c_type = horizontalHeaders.index("type")

    tab_widget = QtWidgets.QTabWidget()

    for _type in allowedExportTypes:

        tableView = create_tableview()

        tab_widget.addTab(tableView ,_type)

        proxy = RenderTypeProxyModel(c_type, _type, c_date, model, tableView)

        tableView.setModel(proxy)

        delegate = DateDelegate(tableView)

        tableView.setItemDelegateForColumn(c_date, delegate)



    tab_widget.show()

    sys.exit(app.exec_())

edited Nov 15 '18 at 18:45

answered Nov 15 '18 at 18:18

eyllanesc

82.9k103360

Yes, you're correct. I read the code at least 10 times and it never spotted the type error. Sometimes it just needs another pair of eyes. Could you go a bit more into detail about sorting? Is this done inside the proxy model or in the tableview widget and how would you implement it? Thanks you so far :)

– jnt
Nov 15 '18 at 18:27

@jnt Have you tried my solution ?, already implemented the filter and the order, now I'm working on simplifying more things in your code.

– eyllanesc
Nov 15 '18 at 18:30

I have been searching through the qt documentation but haven't been able to find the sort() method. I'm highly interested in the improvements to my code as well, as I am probably able to learn something from that. Thank you! Edit: Ah, just discovered sort () inside the QSortFilterProxy model doc.

– jnt
Nov 15 '18 at 18:40

Ok, I marked it as correct answer. Still I am eager to learn about the improvements mentioned in your earlier answer. Have a great day :)

– jnt
Nov 15 '18 at 18:45

@jnt Check my update

– eyllanesc
Nov 15 '18 at 18:46

|
show 1 more comment

The error is caused because type is a reserved word in python:

if model.data(index,QtCore.Qt.DisplayRole) == type:

you must use self.__type.

On the other hand if you want to sort the data by date it is not necessary to enable setSortingEnabled(), just use sort().

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        super(ExportTableModel, self).__init__(parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



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

        return len(self.__exportData)



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

        return len(self.__horizontalHeaders)



    def data(self, index, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            return value



    def headerData(self, section, orientation, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole and orientation == QtCore.Qt.Horizontal:

            if section < self.columnCount():

                return self.__horizontalHeaders[section]

            return "not implemented"



def tableSetup(tableView):

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel): #Custom Proxy Model

    def __init__(self, _type, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.__type = _type



    def filterAcceptsRow(self, row, parent):

        _type = self.sourceModel().index(row, 3, parent).data()

        return _type == self.__type



    def lessThan(self, left, right):

        fmt = "yyyy-MM-dd hh:mm:ss"

        left_data = self.sourceModel().data(left)

        right_data = self.sourceModel().data(right)

        return QtCore.QDateTime.fromString(left_data, fmt) < QtCore.QDateTime.fromString(right_data, fmt)



if __name__ == '__main__':

    import sys

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    exportData = # ...

    model = ExportTableModel(exportData, horizontalHeaders)

    tab_widget = QtWidgets.QTabWidget()

    for _type in allowedExportTypes:

        tableView = QtWidgets.QTableView()

        c = horizontalHeaders.index("date")

        tableSetup(tableView)

        proxy = RenderTypeProxyModel(_type, tableView)

        proxy.setSourceModel(model)

        proxy.sort(c, QtCore.Qt.AscendingOrder)

        tableView.setModel(proxy)

        tab_widget.addTab(tableView ,_type)



    tab_widget.show()

    sys.exit(app.exec_())

Update:

In the next part I have made improvements to your original code avoiding overwriting unnecessary methods and adding a delegate:

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class DateDelegate(QtWidgets.QStyledItemDelegate):

    def initStyleOption(self, option, index):

        super(DateDelegate, self).initStyleOption(option, index)

        option.text = index.data().toString("yyyy-MM-dd hh:mm:ss")



class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        super(ExportTableModel, self).__init__(parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



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

        return len(self.__exportData)



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

        return len(self.__horizontalHeaders)



    def data(self, index, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            header = self.headerData(column, QtCore.Qt.Horizontal)

            if header == "date":

                value = QtCore.QDateTime.fromString(value, "yyyy-MM-dd hh:mm:ss")

            return value



    def headerData(self, section, orientation, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole and orientation == QtCore.Qt.Horizontal:

            if section < self.columnCount():

                return self.__horizontalHeaders[section]

            return "not implemented"



def create_tableview():

    tableView = QtWidgets.QTableView()

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)

    return tableView



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel):

    def __init__(self, c_type, _type, c_date, model, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.setSourceModel(model)

        self.setFilterKeyColumn(c_type)

        self.setFilterFixedString(_type)

        self.sort(c_date, QtCore.Qt.AscendingOrder)





if __name__ == '__main__':

    import sys

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    exportData = # ...

    c_date = horizontalHeaders.index("date")

    c_type = horizontalHeaders.index("type")

    tab_widget = QtWidgets.QTabWidget()

    for _type in allowedExportTypes:

        tableView = create_tableview()

        tab_widget.addTab(tableView ,_type)

        proxy = RenderTypeProxyModel(c_type, _type, c_date, model, tableView)

        tableView.setModel(proxy)

        delegate = DateDelegate(tableView)

        tableView.setItemDelegateForColumn(c_date, delegate)



    tab_widget.show()

    sys.exit(app.exec_())

edited Nov 15 '18 at 18:45

answered Nov 15 '18 at 18:18

eyllanesc

82.9k103360

Yes, you're correct. I read the code at least 10 times and it never spotted the type error. Sometimes it just needs another pair of eyes. Could you go a bit more into detail about sorting? Is this done inside the proxy model or in the tableview widget and how would you implement it? Thanks you so far :)

– jnt
Nov 15 '18 at 18:27

@jnt Have you tried my solution ?, already implemented the filter and the order, now I'm working on simplifying more things in your code.

– eyllanesc
Nov 15 '18 at 18:30

I have been searching through the qt documentation but haven't been able to find the sort() method. I'm highly interested in the improvements to my code as well, as I am probably able to learn something from that. Thank you! Edit: Ah, just discovered sort () inside the QSortFilterProxy model doc.

– jnt
Nov 15 '18 at 18:40

Ok, I marked it as correct answer. Still I am eager to learn about the improvements mentioned in your earlier answer. Have a great day :)

– jnt
Nov 15 '18 at 18:45

@jnt Check my update

– eyllanesc
Nov 15 '18 at 18:46

|
show 1 more comment

The error is caused because type is a reserved word in python:

if model.data(index,QtCore.Qt.DisplayRole) == type:

you must use self.__type.

On the other hand if you want to sort the data by date it is not necessary to enable setSortingEnabled(), just use sort().

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        super(ExportTableModel, self).__init__(parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



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

        return len(self.__exportData)



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

        return len(self.__horizontalHeaders)



    def data(self, index, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            return value



    def headerData(self, section, orientation, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole and orientation == QtCore.Qt.Horizontal:

            if section < self.columnCount():

                return self.__horizontalHeaders[section]

            return "not implemented"



def tableSetup(tableView):

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel): #Custom Proxy Model

    def __init__(self, _type, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.__type = _type



    def filterAcceptsRow(self, row, parent):

        _type = self.sourceModel().index(row, 3, parent).data()

        return _type == self.__type



    def lessThan(self, left, right):

        fmt = "yyyy-MM-dd hh:mm:ss"

        left_data = self.sourceModel().data(left)

        right_data = self.sourceModel().data(right)

        return QtCore.QDateTime.fromString(left_data, fmt) < QtCore.QDateTime.fromString(right_data, fmt)



if __name__ == '__main__':

    import sys

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    exportData = # ...

    model = ExportTableModel(exportData, horizontalHeaders)

    tab_widget = QtWidgets.QTabWidget()

    for _type in allowedExportTypes:

        tableView = QtWidgets.QTableView()

        c = horizontalHeaders.index("date")

        tableSetup(tableView)

        proxy = RenderTypeProxyModel(_type, tableView)

        proxy.setSourceModel(model)

        proxy.sort(c, QtCore.Qt.AscendingOrder)

        tableView.setModel(proxy)

        tab_widget.addTab(tableView ,_type)



    tab_widget.show()

    sys.exit(app.exec_())

Update:

In the next part I have made improvements to your original code avoiding overwriting unnecessary methods and adding a delegate:

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class DateDelegate(QtWidgets.QStyledItemDelegate):

    def initStyleOption(self, option, index):

        super(DateDelegate, self).initStyleOption(option, index)

        option.text = index.data().toString("yyyy-MM-dd hh:mm:ss")



class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        super(ExportTableModel, self).__init__(parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



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

        return len(self.__exportData)



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

        return len(self.__horizontalHeaders)



    def data(self, index, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            header = self.headerData(column, QtCore.Qt.Horizontal)

            if header == "date":

                value = QtCore.QDateTime.fromString(value, "yyyy-MM-dd hh:mm:ss")

            return value



    def headerData(self, section, orientation, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole and orientation == QtCore.Qt.Horizontal:

            if section < self.columnCount():

                return self.__horizontalHeaders[section]

            return "not implemented"



def create_tableview():

    tableView = QtWidgets.QTableView()

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)

    return tableView



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel):

    def __init__(self, c_type, _type, c_date, model, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.setSourceModel(model)

        self.setFilterKeyColumn(c_type)

        self.setFilterFixedString(_type)

        self.sort(c_date, QtCore.Qt.AscendingOrder)





if __name__ == '__main__':

    import sys

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    exportData = # ...

    c_date = horizontalHeaders.index("date")

    c_type = horizontalHeaders.index("type")

    tab_widget = QtWidgets.QTabWidget()

    for _type in allowedExportTypes:

        tableView = create_tableview()

        tab_widget.addTab(tableView ,_type)

        proxy = RenderTypeProxyModel(c_type, _type, c_date, model, tableView)

        tableView.setModel(proxy)

        delegate = DateDelegate(tableView)

        tableView.setItemDelegateForColumn(c_date, delegate)



    tab_widget.show()

    sys.exit(app.exec_())

edited Nov 15 '18 at 18:45

answered Nov 15 '18 at 18:18

eyllanesc

82.9k103360

The error is caused because type is a reserved word in python:

if model.data(index,QtCore.Qt.DisplayRole) == type:

you must use self.__type.

On the other hand if you want to sort the data by date it is not necessary to enable setSortingEnabled(), just use sort().

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        super(ExportTableModel, self).__init__(parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



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

        return len(self.__exportData)



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

        return len(self.__horizontalHeaders)



    def data(self, index, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            return value



    def headerData(self, section, orientation, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole and orientation == QtCore.Qt.Horizontal:

            if section < self.columnCount():

                return self.__horizontalHeaders[section]

            return "not implemented"



def tableSetup(tableView):

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel): #Custom Proxy Model

    def __init__(self, _type, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.__type = _type



    def filterAcceptsRow(self, row, parent):

        _type = self.sourceModel().index(row, 3, parent).data()

        return _type == self.__type



    def lessThan(self, left, right):

        fmt = "yyyy-MM-dd hh:mm:ss"

        left_data = self.sourceModel().data(left)

        right_data = self.sourceModel().data(right)

        return QtCore.QDateTime.fromString(left_data, fmt) < QtCore.QDateTime.fromString(right_data, fmt)



if __name__ == '__main__':

    import sys

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    exportData = # ...

    model = ExportTableModel(exportData, horizontalHeaders)

    tab_widget = QtWidgets.QTabWidget()

    for _type in allowedExportTypes:

        tableView = QtWidgets.QTableView()

        c = horizontalHeaders.index("date")

        tableSetup(tableView)

        proxy = RenderTypeProxyModel(_type, tableView)

        proxy.setSourceModel(model)

        proxy.sort(c, QtCore.Qt.AscendingOrder)

        tableView.setModel(proxy)

        tab_widget.addTab(tableView ,_type)



    tab_widget.show()

    sys.exit(app.exec_())

Update:

In the next part I have made improvements to your original code avoiding overwriting unnecessary methods and adding a delegate:

from PySide2 import QtCore, QtGui, QtWidgets



#To be replaced by env variable

allowedExportTypes = ["img-prv", "img-final", "img-cg", "img-src", "camera"]





class DateDelegate(QtWidgets.QStyledItemDelegate):

    def initStyleOption(self, option, index):

        super(DateDelegate, self).initStyleOption(option, index)

        option.text = index.data().toString("yyyy-MM-dd hh:mm:ss")



class ExportTableModel(QtCore.QAbstractTableModel):

    def __init__(self, exportData, horizontalHeaders, parent=None):

        super(ExportTableModel, self).__init__(parent)

        self.__exportData = exportData

        self.__horizontalHeaders = horizontalHeaders



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

        return len(self.__exportData)



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

        return len(self.__horizontalHeaders)



    def data(self, index, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole:

            row = index.row()

            column = index.column()

            value = self.__exportData[row][column]

            header = self.headerData(column, QtCore.Qt.Horizontal)

            if header == "date":

                value = QtCore.QDateTime.fromString(value, "yyyy-MM-dd hh:mm:ss")

            return value



    def headerData(self, section, orientation, role=QtCore.Qt.DisplayRole):

        if role == QtCore.Qt.DisplayRole and orientation == QtCore.Qt.Horizontal:

            if section < self.columnCount():

                return self.__horizontalHeaders[section]

            return "not implemented"



def create_tableview():

    tableView = QtWidgets.QTableView()

    tableView.setAlternatingRowColors(True)

    tableView.setSelectionBehavior(QtWidgets.QTableView.SelectRows)

    return tableView



class RenderTypeProxyModel (QtCore.QSortFilterProxyModel):

    def __init__(self, c_type, _type, c_date, model, parent=None):

        super(RenderTypeProxyModel,self).__init__(parent)

        self.setSourceModel(model)

        self.setFilterKeyColumn(c_type)

        self.setFilterFixedString(_type)

        self.sort(c_date, QtCore.Qt.AscendingOrder)





if __name__ == '__main__':

    import sys

    app = QtWidgets.QApplication(sys.argv)



    horizontalHeaders = ["status", "comment", "task", "type", "version", "user", "date", "filepath"] #horizontal header data

    exportData = # ...

    c_date = horizontalHeaders.index("date")

    c_type = horizontalHeaders.index("type")

    tab_widget = QtWidgets.QTabWidget()

    for _type in allowedExportTypes:

        tableView = create_tableview()

        tab_widget.addTab(tableView ,_type)

        proxy = RenderTypeProxyModel(c_type, _type, c_date, model, tableView)

        tableView.setModel(proxy)

        delegate = DateDelegate(tableView)

        tableView.setItemDelegateForColumn(c_date, delegate)



    tab_widget.show()

    sys.exit(app.exec_())

edited Nov 15 '18 at 18:45

answered Nov 15 '18 at 18:18

eyllanesc

82.9k103360

edited Nov 15 '18 at 18:45

answered Nov 15 '18 at 18:18

eyllanesc

82.9k103360

answered Nov 15 '18 at 18:18

eyllanesc

82.9k103360

answered Nov 15 '18 at 18:18

eyllanesc

82.9k103360

Yes, you're correct. I read the code at least 10 times and it never spotted the type error. Sometimes it just needs another pair of eyes. Could you go a bit more into detail about sorting? Is this done inside the proxy model or in the tableview widget and how would you implement it? Thanks you so far :)

– jnt
Nov 15 '18 at 18:27

@jnt Have you tried my solution ?, already implemented the filter and the order, now I'm working on simplifying more things in your code.

– eyllanesc
Nov 15 '18 at 18:30

I have been searching through the qt documentation but haven't been able to find the sort() method. I'm highly interested in the improvements to my code as well, as I am probably able to learn something from that. Thank you! Edit: Ah, just discovered sort () inside the QSortFilterProxy model doc.

– jnt
Nov 15 '18 at 18:40

Ok, I marked it as correct answer. Still I am eager to learn about the improvements mentioned in your earlier answer. Have a great day :)

– jnt
Nov 15 '18 at 18:45

@jnt Check my update

– eyllanesc
Nov 15 '18 at 18:46

|
show 1 more comment

Yes, you're correct. I read the code at least 10 times and it never spotted the type error. Sometimes it just needs another pair of eyes. Could you go a bit more into detail about sorting? Is this done inside the proxy model or in the tableview widget and how would you implement it? Thanks you so far :)

– jnt
Nov 15 '18 at 18:27

@jnt Have you tried my solution ?, already implemented the filter and the order, now I'm working on simplifying more things in your code.

– eyllanesc
Nov 15 '18 at 18:30

I have been searching through the qt documentation but haven't been able to find the sort() method. I'm highly interested in the improvements to my code as well, as I am probably able to learn something from that. Thank you! Edit: Ah, just discovered sort () inside the QSortFilterProxy model doc.

– jnt
Nov 15 '18 at 18:40

Ok, I marked it as correct answer. Still I am eager to learn about the improvements mentioned in your earlier answer. Have a great day :)

– jnt
Nov 15 '18 at 18:45

@jnt Check my update

– eyllanesc
Nov 15 '18 at 18:46

Yes, you're correct. I read the code at least 10 times and it never spotted the type error. Sometimes it just needs another pair of eyes. Could you go a bit more into detail about sorting? Is this done inside the proxy model or in the tableview widget and how would you implement it? Thanks you so far :)

– jnt
Nov 15 '18 at 18:27

@jnt Have you tried my solution ?, already implemented the filter and the order, now I'm working on simplifying more things in your code.

– eyllanesc
Nov 15 '18 at 18:30

I have been searching through the qt documentation but haven't been able to find the sort() method. I'm highly interested in the improvements to my code as well, as I am probably able to learn something from that. Thank you! Edit: Ah, just discovered sort () inside the QSortFilterProxy model doc.

– jnt
Nov 15 '18 at 18:40

Ok, I marked it as correct answer. Still I am eager to learn about the improvements mentioned in your earlier answer. Have a great day :)

– jnt
Nov 15 '18 at 18:45

@jnt Check my update

– eyllanesc
Nov 15 '18 at 18:46

|
show 1 more comment

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