Hello!
Tibolds approach would work (and could result in a nicer UI). Both
solutions are possible, some thoughts about the QTableView approach:
- your app smells like a future database app. QTableView is in advantage
then, because by using QSqlTableModel, you get all the mapping betwenn
the db and the model for free.
- By using QTableView, sorting, filtering etc. is already included and
if your table has manymany rows, it will be much faster than any self
implemented filtering/sorting algorithm. But as long, as your todo list
doesn't have thousands of entries (and I hope so for you:-), performance
isn't an argument.
Changes to your code to have the spinbox in the middle column only:
priorityDelegate = SpinBoxDelegate(tableView)
tableView.setItemDelegateForColumn(1, priorityDelegate)
Like this, the first column remains "text-editable", and for the last
column with the checkbox, you don't even necessarily have to implement a
new delegate, reimplementing .flags(), setData() and data() methods of
your model is enough (but if you want a pure checkbox without a label
next to it, you have to write your own delegate, I could send you the code).
Feel free to choose what ever way you want, both are perfectly doable,
having advantages where the other variant has disadvantages...
Cheers
Aaron
Am 13.10.2013 00:06, schrieb Tibold Kandrai:
If you ask me personally, I wouldn't use QTableWidget. Look into
QTreeView or QListWidget.
I think they are more suitable for such tasks and are easier to handle.
With QTreeView you can use QItemDelegate, to create a special rendering.
With QListWidget you can simply add a widget per row and inside the
widget you can put whatever.
ATM I'm in the middle of a 2000 km road trip so I can't rally provide
you sample's, but if you need help next week I'm glad to give you
samples how to use these widgets.
Cheers,
Tibold Kandrai
*From:* Frank Rueter | OHUfx
*Sent:* ?Saturday?, ?12? ?October? ?2013 ?22?:?49
*To:* Tibold Kandrai
*Cc:* [email protected]
Is this the best way to do it though? I.e. having one item per cell? s
there another way at all?
I'm still a bit lost in the model/view design and can't find the
answer online.
I'm simply trying to have each row represent a "task" with a
title/description (string), a status (boolean) and a priority
(integer). For the integer I need a spin box and for the boolean I
need a checkbox. The examples I found online all seem to be doing
something slightly different and often use different ways which makes
matters more confusing.
Here is what I have at the moment:
http://pastebin.com/H3GD0xVB
The "status" and "priority" values don't display currnelty as I
haven't figured out how to properly assign a delegate to just those
cells. At the top I tried to define a n item delegete for a spin box
but I'm not sure how to properly assign it.
Do I have to make the delegate draw different widgets (spin box /
checkbox) depending on data type, or can/should I use a different
delegate for each cell?
I'm sure the answer is right in front of me, could you please help one
more time please?!
Cheers,
frank
On 11/10/13 4:00 PM, Tibold Kandrai wrote:
If you mean to use a QStandardItem per cell then yes.
Also for storing values that you want to display, use the
Qt.DisplayRole as role.
Cheers,
Tibold Kandrai
------------------------------------------------------------------------
From: Frank Rueter | OHUfx <mailto:[email protected]>
Sent: ?11/?10/?2013 14:35
To: Tibold Kandrai <mailto:[email protected]>
Cc: [email protected] <mailto:[email protected]>
Subject: Re: [PySide] simple QTableView example
one more silly question if I may:
So if I have a task like this:
newTask = {'title':'new task', 'priority':1, 'status':False}
and need to store the data in one row in the model I should use
three different items, one for each value, right?!
e.g.:
newTask = {'title':'new task', 'priority':1, 'status':False}
row = self.model.rowCount()
for column, attr in enumerate(['title', 'priority',
'status']):
newItem = QtGui.QStandardItem(newTask[attr])
self.model.setItem(row, column, newItem)
then juggle delegates or widgets to use a spin box for the integer
and a checkbox for the boolean...
Thanks for the help!
Cheers,
frank
On 10/10/13 11:44 PM, Tibold Kandrai wrote:
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
_______________________________________________
PySide mailing list
[email protected]
http://lists.qt-project.org/mailman/listinfo/pyside
_______________________________________________
PySide mailing list
[email protected]
http://lists.qt-project.org/mailman/listinfo/pyside
_______________________________________________
PySide mailing list
[email protected]
http://lists.qt-project.org/mailman/listinfo/pyside
_______________________________________________
PySide mailing list
[email protected]
http://lists.qt-project.org/mailman/listinfo/pyside
