[PySide] simple QTableView example

[Tibold Kandrai]

Hey,


I’m not sure I understand the problem correctly.


If you want to store data in a cell or a QStandardItem, then you need to use setData() and data().

Generally you shouldn’t need to subclass QStandardItem or QStandardItemModel.

Here is an example how:


# Define roles

FINISHED_ROLE = QtCore.Qt.UserRole + 1
PRIORITY_ROLE = QtCore.Qt.UserRole + 2


# Create model

model = QtGui.QStandardItemModel()

item = QtGui.QStandarItem()

model.appendRow(item)

item_index = item.index()


# Store data using the item

item.setData(finished, FINISHED_ROLE)

item.setData(priority, PRIORITY_ROLE)



# Store data using the model

model.setData(item_index, finished, FINISHED_ROLE)

model.setData(item_index, priority, PRIORITY_ROLE)


# Retrieve data using the item

finished = item.data(FINISHED_ROLE)

priority = item.data(PRIORITY_ROLE)


# Retrieve data using the model


finished = model.data(item_index, FINISHED_ROLE)

priority = model.data(item_index, PRIORITY_ROLE)



In some cases like click event handlers, you have the model and the item index, there it’s easier to use the model methods instead of finding the item and then getting the data. 😉


Hope it helps.


Cheers,

Tibold



From: Frank Rueter | OHUfx
Sent: ‎2013‎ ‎October‎ ‎10‎, ‎Thursday ‎19‎:‎37
To: pyside at qt-project.org

After looking at some more examples I think my approach of storing multiple values in one item is fundamentally flawed.
Instead I should be using one item per cell and assign the respective data, right?!

I shall re-write the example accordingly, sorry for the noise.

frank


On 10/10/13 6:34 PM, Frank Rueter | OHUfx wrote:


I meant QTableView not QStandardTableView :/


On 10/10/13 6:33 PM, Frank Rueter | OHUfx wrote:


Hi all,

after a bit of a break from PySide I am trying to wrap my head around the model/view stuff again and am trying to understand how a very simple example would work where a QStandarItem has properties "title", "priority" and "finished" which are displayed via a QStandardTableView.

I am struggling with understanding how to properly display the above three properties in the table's columns. I tried setting the data() method on the model like this:

    def data(self, index, role=QtCore.Qt.DisplayRole):
        '''Return data based on index and role'''
        item = self.itemFromIndex(index)
        if index.column() == 0:
            return item.title
        elif index.column() == 1:
            return item.finished
        elif index.column() == 2:
            return item.priority

but for some reason it errors saying item does not have attribute "finished" even though my item object s declared like this:

class TaskItem(QtGui.QStandardItem):
    '''Item to hold a task for the todo list'''
    
    def __init__(self, title, finished=False, priority=1):
        super(TaskItem, self).__init__(title)
        self.title = title
        self.finished = finished
        self.priority = priority


When printing the item's attributes via dir() I see that, when the model is populated, the last item it attempts to call is not my custom item object, but something else with less attributes and methods. Clearly there is something I haven't quite understood about this process.

Also, if I use the models data() method as pointed out above, I get checkboxes in the cells which I don't want at this stage.

Can somebody please help me understand where I go wrong?
Attached is the whole test code.

Cheers,
frank

P.S.: I am aware that the controller code shouldn't necessarily live in the QWidget's methods, this is just for testing which I will clean up once I get how it all connects again



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