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[PyQt] [Solved]Make certain columns Un-editable in QtSql
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[PyQt] [Solved]Make certain columns Un-editable in QtSql
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#1
May-25-2022, 12:54 AM (This post was last modified: May-28-2022, 05:19 PM by Extra.)
Hello again,

I'm trying to figure out how to make my SellPrice, ID, Quantity, & Date columns Un-editable/read-only when you click on their columns (Because right now you can click on them, modify the values, and it saves t the database. I would like to make it so you can't modify those specific columns ).

I know in the InitializeModel() it makes the Table editable, but how to I filter out certain columns so they can't be changed when the user clicks on the column/cell to try and modify the values?

(This way I force the user to go through the proper way of updating the values. Let's say the Quantity needs updating for example, Instead of having the user manually upadte it in the table, they must actually checkout/return the item by scanning it's barcode. Therefore, that cell/column needs to be read-only/Non-editable to prevent this manual/accidental changes)

So Is there a way to set those certain indexes/columns in the InventoryDisplay so they have editable = false or something?

Any help is much appreciated.

Thanks in advance.

Snippet: 
#----------------------------------------------------------------------------------------------------
#                                       Inventory Display
#----------------------------------------------------------------------------------------------------

        #Connect to Database
        self.db = QSqlDatabase.addDatabase('QSQLITE')
        self.db.setDatabaseName('inventory.db')
        self.model = QSqlTableModel()
        self.delrow = -1
        self.initializeModel()

        self.sbar = self.statusBar()

        self.InventoryDisplay = QTableView()
        self.InventoryDisplay.setStyleSheet("background-color: rgb(255, 255, 255);")
        self.InventoryDisplay.setModel(self.model)
        self.InventoryDisplay.clicked.connect(self.findrow)
        self.InventoryDisplay.selectionModel().selectionChanged.connect(self.getCellText)

        self.gridLayout.addWidget(self.InventoryDisplay, 4, 1, 1, 2)
        self.setCentralWidget(self.centralwidget)

 
    def initializeModel(self):
       self.model.setTable('items')
       self.model.setEditStrategy(QSqlTableModel.OnFieldChange)
       self.model.select()

#----------------------------------
#       Update Inventory
#---------------------------------- 
#TODO: Make SellPrice, ID, Quantity, & Date Uneditable
#Have SellPrice update if Price is updated 
  
    def findrow(self, i):
        self.delrow = i.row()
 
    def getCellText(self):
        if self.InventoryDisplay.selectedIndexes():
            item = self.InventoryDisplay.selectedIndexes()[0]
            row = self.selectedRow()
            column = self.selectedColumn()
            if not item == None:
                name = item.data()
                self.sbar.showMessage(str(name))
 
    def selectedRow(self):
        if self.InventoryDisplay.selectionModel().hasSelection():
            row =  self.InventoryDisplay.selectionModel().selectedIndexes()[0].row()
            return int(row)
 
    def selectedColumn(self):
        column =  self.InventoryDisplay.selectionModel().selectedIndexes()[0].column()
        return int(column)
#----------------------------------
#----------------------------------------------------------------------------------------------------
The full code:
import sys
from PyQt5 import QtWidgets
from PyQt5.QtSql import QSqlDatabase, QSqlTableModel
from PyQt5.QtWidgets import (QApplication, QWidget, QPushButton, QMainWindow, 
                                QLabel, QLineEdit, QTableWidget, QTableWidgetItem, 
                                QGridLayout, QVBoxLayout, QSizePolicy, QSpacerItem, 
                                QMessageBox,QSpinBox, QTableView)
from PyQt5.QtCore import Qt, QMetaObject, QCoreApplication
from PyQt5.QtGui import QFont
import sqlite3
from AddItemScreen import Ui_AddItemMenu
from Constants import MainDatabase

class Ui_MainDisplay(QMainWindow):
    def __init__(self, parent = None):
        super(Ui_MainDisplay, self).__init__(parent)
        self.setObjectName("MainDisplay")
        self.setGeometry(0, 0, 1123, 903)
        self.setStyleSheet("background-color: rgb(0, 170, 255);")
        self.centralwidget = QWidget(self)
        self.centralwidget.setObjectName("centralwidget")
        self.gridLayout = QGridLayout(self.centralwidget)
        self.gridLayout.setObjectName("gridLayout")
        self.verticalLayout = QVBoxLayout()
        self.verticalLayout.setContentsMargins(-1, 0, -1, 0)
        self.verticalLayout.setSpacing(6)
        self.verticalLayout.setObjectName("verticalLayout")
        self.AddItemButton = QPushButton(self.centralwidget)
        font = QFont()
        font.setPointSize(10)
        font.setBold(True)
        font.setWeight(75)
        self.AddItemButton.setFont(font)
        self.AddItemButton.setStyleSheet("background-color: rgb(85, 255, 0);\n"
"border-style: outset;\n"
"border-width: 2px;\n"
"border-radius: 15px;\n"
"border-color: black;\n"
"padding: 4px;\n"
"\n"
"")
        self.AddItemButton.setObjectName("AddItemButton")
        self.verticalLayout.addWidget(self.AddItemButton)
        self.DeleteItemButton = QPushButton(self.centralwidget)
        font = QFont()
        font.setPointSize(10)
        font.setBold(True)
        font.setWeight(75)
        self.DeleteItemButton.setFont(font)
        self.DeleteItemButton.setStyleSheet("background-color: rgb(255, 65, 68);\n"
"border-style: outset;\n"
"border-width: 2px;\n"
"border-radius: 15px;\n"
"border-color: black;\n"
"padding: 4px;\n"
"")
        self.DeleteItemButton.setObjectName("DeleteItemButton")
        self.verticalLayout.addWidget(self.DeleteItemButton)
        self.CheckoutButton = QPushButton(self.centralwidget)
        font = QFont()
        font.setPointSize(10)
        font.setBold(True)
        font.setWeight(75)
        self.CheckoutButton.setFont(font)
        self.CheckoutButton.setStyleSheet("background-color: rgb(255, 255, 0);\n"
"border-style: outset;\n"
"border-width: 2px;\n"
"border-radius: 15px;\n"
"border-color: black;\n"
"padding: 4px;\n"
"")
        self.CheckoutButton.setObjectName("CheckoutButton")
        self.verticalLayout.addWidget(self.CheckoutButton)
        self.ReturnButton = QPushButton(self.centralwidget)
        font = QFont()
        font.setPointSize(10)
        font.setBold(True)
        font.setWeight(75)
        self.ReturnButton.setFont(font)
        self.ReturnButton.setStyleSheet("background-color: rgb(255, 170, 32);\n"
"border-style: outset;\n"
"border-width: 2px;\n"
"border-radius: 15px;\n"
"border-color: black;\n"
"padding: 4px;\n"
"")
        self.ReturnButton.setObjectName("ReturnButton")
        self.verticalLayout.addWidget(self.ReturnButton)
        self.ScanBarcodeButton = QPushButton(self.centralwidget)
        font = QFont()
        font.setPointSize(10)
        font.setBold(True)
        font.setWeight(75)
        self.ScanBarcodeButton.setFont(font)
        self.ScanBarcodeButton.setStyleSheet("background-color: rgb(211, 211, 211);\n"
"border-style: outset;\n"
"border-width: 2px;\n"
"border-radius: 15px;\n"
"border-color: black;\n"
"padding: 4px;\n"
"")
        self.ScanBarcodeButton.setObjectName("ScanBarcodeButton")
        self.verticalLayout.addWidget(self.ScanBarcodeButton)
        self.MoreInfoButton = QPushButton(self.centralwidget)
        font = QFont()
        font.setPointSize(10)
        font.setBold(True)
        font.setWeight(75)
        self.MoreInfoButton.setFont(font)
        self.MoreInfoButton.setStyleSheet("background-color: rgb(196, 17, 255);\n"
"border-style: outset;\n"
"border-width: 2px;\n"
"border-radius: 15px;\n"
"border-color: black;\n"
"padding: 4px;")
        self.MoreInfoButton.setObjectName("MoreInfoButton")
        self.verticalLayout.addWidget(self.MoreInfoButton)
        self.RefreshButton = QPushButton(self.centralwidget)
        font = QFont()
        font.setPointSize(10)
        font.setBold(True)
        font.setWeight(75)
        self.RefreshButton.setFont(font)
        self.RefreshButton.setStyleSheet("background-color: rgb(0, 255, 255);\n"
"border-style: outset;\n"
"border-width: 2px;\n"
"border-radius: 15px;\n"
"border-color: black;\n"
"padding: 4px;\n"
"\n"
"")
        self.RefreshButton.setObjectName("RefreshButton")
        self.verticalLayout.addWidget(self.RefreshButton)
        spacerItem = QSpacerItem(20, 40, QSizePolicy.Policy.Minimum, QSizePolicy.Policy.Expanding)
        self.verticalLayout.addItem(spacerItem)
        self.LogoutButton = QPushButton(self.centralwidget)
        font = QFont()
        font.setPointSize(10)
        font.setBold(True)
        font.setWeight(75)
        self.LogoutButton.setFont(font)
        self.LogoutButton.setStyleSheet("background-color: rgb(255, 255, 255);\n"
"border-style: outset;\n"
"border-width: 2px;\n"
"border-radius: 15px;\n"
"border-color: black;\n"
"padding: 4px;\n"
"")
        self.LogoutButton.setObjectName("LogoutButton")
        self.verticalLayout.addWidget(self.LogoutButton)
        self.gridLayout.addLayout(self.verticalLayout, 4, 3, 1, 1)
        self.Header = QLabel(self.centralwidget)
        font = QFont()
        font.setPointSize(15)
        font.setBold(True)
        font.setWeight(75)
        self.Header.setFont(font)
        self.Header.setStyleSheet("background-color: rgb(0, 0, 0);\n"
"color: rgb(255, 255, 255);\n"
"border-style: outset;\n"
"border-width: 2px;\n"
"border-radius: 15px;\n"
"border-color: black;\n"
"padding: 4px;")
        self.Header.setAlignment(Qt.AlignmentFlag.AlignCenter)
        self.Header.setObjectName("Header")
        self.gridLayout.addWidget(self.Header, 0, 1, 1, 3)
        self.SearchButton = QPushButton(self.centralwidget)
        font = QFont()
        font.setPointSize(10)
        font.setBold(True)
        font.setWeight(75)
        self.SearchButton.setFont(font)
        self.SearchButton.setStyleSheet("background-color: rgb(211, 211, 211);\n"
"border-style: outset;\n"
"border-width: 2px;\n"
"border-radius: 15px;\n"
"border-color: black;\n"
"padding: 4px;\n"
"")
        self.SearchButton.setObjectName("SearchButton")
        self.gridLayout.addWidget(self.SearchButton, 2, 1, 1, 1)
        self.SearchBar = QLineEdit(self.centralwidget)
        self.SearchBar.setStyleSheet("background-color: rgb(255, 255, 255);")
        self.SearchBar.setObjectName("SearchBar")
        self.gridLayout.addWidget(self.SearchBar, 2, 2, 1, 1)

        self.retranslateUi(self)
        QMetaObject.connectSlotsByName(self)

#----------------------------------------------------------------------------------------------------
#                                       Inventory Display
#----------------------------------------------------------------------------------------------------

        #Connect to Database
        self.db = QSqlDatabase.addDatabase('QSQLITE')
        self.db.setDatabaseName('inventory.db')
        self.model = QSqlTableModel()
        self.delrow = -1
        self.initializeModel()

        self.sbar = self.statusBar()

        self.InventoryDisplay = QTableView()
        self.InventoryDisplay.setStyleSheet("background-color: rgb(255, 255, 255);")
        self.InventoryDisplay.setModel(self.model)
        self.InventoryDisplay.clicked.connect(self.findrow)
        self.InventoryDisplay.selectionModel().selectionChanged.connect(self.getCellText)

        self.gridLayout.addWidget(self.InventoryDisplay, 4, 1, 1, 2)
        self.setCentralWidget(self.centralwidget)

 
    def initializeModel(self):
       self.model.setTable('items')
       self.model.setEditStrategy(QSqlTableModel.OnFieldChange)
       self.model.select()

#----------------------------------
#       Update Inventory
#---------------------------------- 
#TODO: Make SellPrice, ID, Quantity, & Date Uneditable
#Have SellPrice update is Price is updated 
  
    def findrow(self, i):
        self.delrow = i.row()
 
    def getCellText(self):
        if self.InventoryDisplay.selectedIndexes():
            item = self.InventoryDisplay.selectedIndexes()[0]
            row = self.selectedRow()
            column = self.selectedColumn()
            if not item == None:
                name = item.data()
                self.sbar.showMessage(str(name))
 
    def selectedRow(self):
        if self.InventoryDisplay.selectionModel().hasSelection():
            row =  self.InventoryDisplay.selectionModel().selectedIndexes()[0].row()
            return int(row)
 
    def selectedColumn(self):
        column =  self.InventoryDisplay.selectionModel().selectedIndexes()[0].column()
        return int(column)
#----------------------------------
#----------------------------------------------------------------------------------------------------
  
    def retranslateUi(self, MainDisplay):
        _translate = QCoreApplication.translate
        self.setWindowTitle(_translate("MainDisplay", "AdminMenu"))
        self.AddItemButton.setText(_translate("MainDisplay", "Add Item"))
        self.DeleteItemButton.setText(_translate("MainDisplay", "Delete Item"))
        self.CheckoutButton.setText(_translate("MainDisplay", "Check Out"))
        self.ReturnButton.setText(_translate("MainDisplay", "Return"))
        self.ScanBarcodeButton.setText(_translate("MainDisplay", "Scan Barcode"))
        self.MoreInfoButton.setText(_translate("MainDisplay", "More Info"))
        self.RefreshButton.setText(_translate("MainDisplay", "Refresh"))
        self.LogoutButton.setText(_translate("MainDisplay", "Log Out"))
        self.Header.setText(_translate("MainDisplay", "Admin Menu"))
        self.SearchButton.setText(_translate("MainDisplay", "Search"))

#----------------------------------------------------------------------------------------------------
#                                      Button Actions
#----------------------------------------------------------------------------------------------------
        #------------------------------------------
                        #Logout Button
        #------------------------------------------
        #When the Logout button is clicked -> LogoutClicked Function
        LogoutButton = self.LogoutButton
        LogoutButton.clicked.connect(self.LogoutClicked)
        #------------------------------------------
        #------------------------------------------
                        #Add Item Button
        #------------------------------------------
        #When the AddItem button is clicked -> AddItem Function
        AddItemButton = self.AddItemButton
        AddItemButton.clicked.connect(self.AddItemClicked)
        #------------------------------------------
        #------------------------------------------
                     #Remove Item Button
        #------------------------------------------
        #When the RemoveItem button is clicked -> RemoveItem Function
        RemoveItemButton = self.DeleteItemButton
        RemoveItemButton.clicked.connect(self.RemoveItemClicked)
        #------------------------------------------
        #------------------------------------------
                     #Checkout Item Button
        #------------------------------------------
        #When the Checkout button is clicked -> Checkout Function
        CheckoutButton = self.CheckoutButton
        CheckoutButton.clicked.connect(self.CheckoutClicked)
        #------------------------------------------
        #------------------------------------------
                     #Return Item Button
        #------------------------------------------
        #When the Return button is clicked -> Return Function
        ReturnButton = self.ReturnButton
        ReturnButton.clicked.connect(self.ReturnClicked)
        #------------------------------------------
        #------------------------------------------
                     #Scan Barcode Button
        #------------------------------------------
        #When the Scan Barcode button is clicked -> ScanBarcode Function
        ScanBarcodeButton = self.ScanBarcodeButton
        ScanBarcodeButton.clicked.connect(self.ScanBarcodeClicked)
        #------------------------------------------
        #------------------------------------------
                     #More Info Button
        #------------------------------------------
        #When the More Info button is clicked -> MoreInfo Function
        MoreInfoButton = self.MoreInfoButton
        MoreInfoButton.clicked.connect(self.MoreInfoClicked)
        #------------------------------------------
        #------------------------------------------
                     #Refresh Button
        #------------------------------------------
        #When the More Info button is clicked -> MoreInfo Function
        RefreshButton = self.RefreshButton
        RefreshButton.clicked.connect(self.RefreshClicked)
        #------------------------------------------
        #------------------------------------------
                     #Search Button
        #------------------------------------------
        #When the More Info button is clicked -> MoreInfo Function
        SearchButton = self.SearchButton
        SearchButton.clicked.connect(self.SearchClicked)
        #------------------------------------------
#----------------------------------
    #Logout Function
    def LogoutClicked(self):
        #Print in terminal for testing:
        print("The Logout Button was clicked")
        #Switch from this screen to the LoginScreen
        #(Import LoginScreen here to prevent circular import error)
        from LoginScreen import Ui_Loginscreen
        self.win = Ui_Loginscreen() #Define LoginScreen
        self.win.show() #Show Login Screen
        self.close() #Close this screen (AdminMenu)
#----------------------------------
#----------------------------------
    #AddItem Function
    def AddItemClicked(self):
        #Print in terminal for testing:
        print("The Add Item Button was clicked")
        #Switch from this screen to the AddItems Screen (Scene Swap):
        self.win = Ui_AddItemMenu()
        self.win.show()
        self.close()
#----------------------------------
#----------------------------------
    #RemoveItem Function
    def RemoveItemClicked(self):
        #Print in terminal for testing:
        print("The Delete Item Button was clicked")
        self.DeleteConfirmation()
    #----------------------------------
    #   Delete Item Confirmation
    #----------------------------------
    def DeleteConfirmation(self):
        msgBox = QMessageBox()
        msgBox.setIcon(QMessageBox.Warning)
        msgBox.setText("Are you sure you want to delete this item?")
        msgBox.setInformativeText("*This cannot be undone")
        msgBox.setWindowTitle("Delete Item Confirmation")
        msgBox.setStandardButtons(QMessageBox.Yes | QMessageBox.No)
  
        returnValue = msgBox.exec()
        if returnValue == QMessageBox.Yes:
                row = self.InventoryDisplay.currentIndex().row()
                self.model.removeRow(row)
                self.initializeModel()
                self.InventoryDisplay.selectRow(row)
#----------------------------------
#----------------------------------
    #Checkout Function
    def CheckoutClicked(self):
        #Print in terminal for testing:
        print("The Checkout Button was clicked")
#----------------------------------
#----------------------------------
    #Return Function
    def ReturnClicked(self):
        #Print in terminal for testing:
        print("The Return Button was clicked")
#----------------------------------
#----------------------------------
    #ScanBarcode Function
    def ScanBarcodeClicked(self):
        #Print in terminal for testing:
        print("The Scan Barcode Button was clicked")
#----------------------------------
#----------------------------------
    #MoreInfo Function
    def MoreInfoClicked(self):
        #Print in terminal for testing:
        print("The More Info Button was clicked")
#----------------------------------
#----------------------------------
    #Refresh Function
    def RefreshClicked(self):
        #Print in terminal for testing:
        print("The Refresh Button was clicked")
        #Close and reopen the app (Refresh)
        self.win = Ui_MainDisplay()
        self.win.show()
        self.close()
#----------------------------------
#----------------------------------
    #Search Function
    def SearchClicked(self):
        #Print in terminal for testing:
        print("The Search Button was clicked")
        
        userQuery = self.SearchBar.text()
        #Connect to the inventory database (inventory.db)
        connection = sqlite3.connect(MainDatabase)
        cursor = connection.cursor()
        cursor.execute("SELECT * FROM items WHERE Name LIKE'%'||?||'%'",(userQuery,))
        connection.commit()
        #Get all info from the Items Table
        result = cursor.fetchall()
        print(result)
        #Close the connection to the database
        connection.close()
#----------------------------------
#----------------------------------------------------------------------------------------------------

 
if __name__ == '__main__':
    app = QApplication(sys.argv)
    win = Ui_MainDisplay()
    win.show()

    sys.exit(app.exec_())
Side Question:
Will my sellPrice update if the Price was updated? If not, how could I get that to work?
[My sellPrice is just a formula (Price * Markup -> Where Markup = 1.10 and Price is the number the user inputted in the database from the AddItems Function)]
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deanhystad

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Posts: 6,981
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Joined: Feb 2020
Reputation: 328
#2
May-25-2022, 07:28 AM (This post was last modified: May-25-2022, 07:28 AM by deanhystad.)
To make a column read only:

https://www.qtcentre.org/threads/43510-M...post198660
https://forum.qt.io/topic/125774/qtablev...e-column/3
https://forum.qt.io/topic/20786/solved-h...qtableview

You should not have a sell price in your database if it is calculated from another field.
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Axel_Erfurt
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Posts: 1,066
Threads: 17
Joined: Dec 2016
Reputation: 55
#3
May-25-2022, 09:21 AM 
    def calculate_sellprice(self):
        for row in range(self.InventoryDisplay.rowCount() - 1):
            sell_price = QTableWidgetItem(self.InventoryDisplay.item(row, 3)).text()
            if sell_price:
                sell_price = float(sell_price) * 1.1
                self.InventoryDisplay.setItem(row, 4, QTableWidgetItem(str(sell_price)))
call

self.calculate_sellprice()

after loading data
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#4
May-26-2022, 11:03 PM (This post was last modified: May-26-2022, 11:03 PM by Extra.)
Thanks for the help.
I got the specific columns to be read-only using Delegate.

Now for calculating the sell price, I tried:
def calculate_sellprice(self):
        for row in range(self.InventoryDisplay.rowCount() - 1):
                sell_price = QTableWidgetItem(self.InventoryDisplay.item(row, 3)).text()
                if sell_price:
                        sell_price = float(sell_price) * 1.1
                        self.InventoryDisplay.setItem(row, 4, QTableWidgetItem(str(sell_price)))
But I get this error:
Error:
    for row in range(self.InventoryDisplay.rowCount() - 1):
AttributeError: 'QTableView' object has no attribute 'rowCount'
Is there a rowcount property in QTableView or do I have to use selectedIndexes()?



This is a snippet of the code that displays the database on the GUI:
#----------------------------------------------------------------------------------------------------
#                                       Inventory Display
#----------------------------------------------------------------------------------------------------

        #Connect to Database
        self.db = QSqlDatabase.addDatabase('QSQLITE')
        self.db.setDatabaseName('inventory.db')
        self.model = QSqlTableModel()
        self.delrow = -1
        self.initializeModel()

        self.sbar = self.statusBar()

        self.InventoryDisplay = QTableView()
        self.InventoryDisplay.setStyleSheet("background-color: rgb(255, 255, 255);")
        self.InventoryDisplay.setModel(self.model)
        self.InventoryDisplay.clicked.connect(self.findrow)
        self.InventoryDisplay.selectionModel().selectionChanged.connect(self.getCellText)

        self.gridLayout.addWidget(self.InventoryDisplay, 4, 1, 1, 2)
        self.setCentralWidget(self.centralwidget)

        self.calculate_sellprice()

    def calculate_sellprice(self):
        for row in range(self.InventoryDisplay.rowCount() - 1):
                sell_price = QTableWidgetItem(self.InventoryDisplay.item(row, 3)).text()
                if sell_price:
                        sell_price = float(sell_price) * 1.1
                        self.InventoryDisplay.setItem(row, 4, QTableWidgetItem(str(sell_price)))

        #----------------------------------
        #Make Specific Columns Un-Editable/ReadOnly
        #----------------------------------
        class ReadOnlyDelegate(QStyledItemDelegate):
                def createEditor(self, parent, option, index):
                        print('This column is Read-Only')
                        return 

        delegate = ReadOnlyDelegate(self)
        self.InventoryDisplay.setItemDelegateForColumn(0, delegate) #ID
        self.InventoryDisplay.setItemDelegateForColumn(2, delegate) #Quantity
        self.InventoryDisplay.setItemDelegateForColumn(4, delegate) #SellPrice
        self.InventoryDisplay.setItemDelegateForColumn(10, delegate) #Date Added
        #----------------------------------

    def initializeModel(self):
       self.model.setTable('items')
       self.model.setEditStrategy(QSqlTableModel.OnFieldChange)
       self.model.select()
        
#----------------------------------
#       Update Inventory
#---------------------------------- 
#TODO: Have SellPrice update if Price is updated 
  
    def findrow(self, i):
        self.delrow = i.row()
 
    def getCellText(self):
        if self.InventoryDisplay.selectedIndexes():
            item = self.InventoryDisplay.selectedIndexes()[0]
            row = self.selectedRow()
            column = self.selectedColumn()
            if not item == None:
                name = item.data()
                self.sbar.showMessage(str(name))
 
    def selectedRow(self):
        if self.InventoryDisplay.selectionModel().hasSelection():
            row =  self.InventoryDisplay.selectionModel().selectedIndexes()[0].row()
            return int(row)
 
    def selectedColumn(self):
        column =  self.InventoryDisplay.selectionModel().selectedIndexes()[0].column()
        return int(column)
#----------------------------------
#----------------------------------------------------------------------------------------------------
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deanhystad

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#5
May-26-2022, 11:38 PM (This post was last modified: May-26-2022, 11:40 PM by deanhystad.)
QTableView does not have a rowCount() method. Does your data model have a rowCount()? (hint hint)
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Axel_Erfurt
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#6
May-27-2022, 08:48 AM (This post was last modified: May-27-2022, 08:49 AM by Axel_Erfurt.)
for QTableView try

       
    def calculate_sellprice(self):
        for row in range(self.viewer.model().rowCount() - 1):
            sell_price = str(self.viewer.model().index(row, 3).data())
            if sell_price:
                sell_price = f'{float(sell_price.replace(",", ".")) * 1.1:.2f}'
                self.viewer.model().setData(self.viewer.model().index(row, 4), sell_price)
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Axel_Erfurt
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#7
May-27-2022, 09:10 AM
It would be a good idea to install zeal and load the python3 and PyQt5 docs.
Then you can work with it offline.
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#8
May-28-2022, 05:19 PM
Thanks, it worked!
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