PySide2 index of setData

Abdulrahman

Hi,
I used QAbstractTableModel to make a table in python and when i try to trigger setData function, it requires PySide2.QtCore.QModelIndex. So how can i set PySide2.QtCore.QModelIndex from qml file.
python:

class TableItems(QAbstractTableModel):
     def __init__(self):
        QAbstractTableModel.__init__(self)
        self.rows = 3
        self.cols = 4
        self.item = np.arange(12).reshape(self.rows, self.cols)

     def rowCount(self, parent):
         return self.rows

     def columnCount(self, parent):
         return self.cols

     def data(self, index, role):
         if((index.row() < 3) and index.column() < 4):
             return str(self.item[index.row(), index.column()])

qml:

  TableView{
        anchors.fill: parent
        id: viewer
        columnSpacing: 12
        rowSpacing: 5
        model: modelItem
        delegate: TextField{
             id: readWrite
            text: display
            onAccepted: {
                modelItem.setData(readWrite.text)
            }
        }

JonB

@Abdulrahman
I'm sorry I don't know anything about QML so cannot answer your question.

But may I suggest you might want to improve you def data() a bit? You should test the role parameter before returning your data value. Qt infrastructure calls it with a variety of values of role behind the scenes, you are returning your result unconditionally to what might be a request for a colour or an alignment for data at that index, in which case your return result may be misinterpreted. Unless this never happens from QML. I would change yours to, say:

     def data(self, index, role):
         if not index.isValid():
             return None
         if role == Qt.DisplayRole or role == Qt.EditRole:
             return self.item[index.row(), index.column()]
         return None

Also, you are inheriting from just QAbstractTableModel. That means your modelItem.setData(readWrite.text) will do nothing. You must implement setData() (in a similar fashion to data()) before your model can be updated:

     def setData(self, index, value, role):
         if not index.isValid():
             return False
         if role == Qt.EditRole:
             self.item[index.row(), index.column()] = value
             return True
         return False

Abdulrahman

@JonB
Sorry for late reply. but i had implemented SetData(), when modelItem.setData(readWrite.text) is invoked, it requires the first parameter to be PySide2.QtCore.QModelIndex. So my question is how to send this index from qml.

JonB

@Abdulrahman
Not my area, perhaps this question should be posted to the QML sub-forum, if you don't get an answer here in a while? (except to say: if you have the row, column & model, model->index(row, column) delivers the QModelIndex, if that helps from QML.)

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PySide2 index of setData