CODEWITHSUNDEEP
pythonpyqtpyqt5qtablewidget
Nipun Alahakoon
Nipun Alahakoon

Reputation: 2862

Set table values on pyqt5 in pageload throws AttributeError

I am trying to set pyqt5 Qtablewidget items on pageload using a helper class and method. This is my code.

#ui - > UI mainwindow class
#examdetails -> a list of dictionaries (table from database)  
def setExamRecords(self,ui,examDetails):
    for rowIndex,exam in enumerate(examDetails):
        for colIndex,key in enumerate(exam):
            print(exam[key])
            item = ui.tableWidget.item(rowIndex, colIndex)
            item.setText(str(exam[key]))
    return True

However this returns error AttributeError: 'NoneType' object has no attribute 'setText'

is it not possible to set the ui elements in a separate class like this? The reason to moving to a separate helper class is mainly to reduce the codes clogging up in the main ui class.

Upvotes: 0

Views: 90

Answers (1)

eyllanesc
eyllanesc

Reputation: 244162

The existence of an empty cell does not imply that it is associated with a QTableWidgetItem, therefore the item() method returns None. A possible solution is to check if it is None or not, if it is then create the QTableWidgetItem and set it with setItem():

def setExamRecords(self, ui, examDetails):
    for rowIndex, exam in enumerate(examDetails):
        for colIndex, key in enumerate(exam):
            print(exam[key])
            item = ui.tableWidget.item(rowIndex, colIndex)
            if item is None:
                item = QTableWidgetItem()
                ui.tableWidget.setItem(rowIndex, colIndex, item)
            item.setText(str(exam[key]))
    return True

Another possible solution is to use the model where if each cell is associated with a QModelIndex:

def setExamRecords(self, ui, examDetails):
    for rowIndex, exam in enumerate(examDetails):
        for colIndex, key in enumerate(exam):
            index = ui.tableWidget.model().index(rowIndex, colIndex)
            ui.tableWidget.model().setData(index, str(exam[key]))
    return True

Upvotes: 1

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