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: [email protected]
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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