[PySide] custom table sorting

[Frank Rueter | OHUfx]

Hi Sebastian,

thanks again for your help. I couldn't get the sorting to work even 
though the widgets in each column were always the same type.
You are probably totally right that this won't be very scalable, I just 
wanted to get a grip on it first before diving into the 
QTableView/QTableModel solution, which I think I won't be able to avoid. 
These tables can indeed grow very large.
I shall read up on this though and try and do it properly. ;)


Cheers,
frank


On 6/04/12 10:03 PM, Sebastian Elsner wrote:
> Hi,
>
> assuming the checkboxes and the combo boxes are different data types
> (bool, vs, string) and thus displayed in different columns, sorting
> should happen automatically when you setSortingEnabled(True). Please
> note that you have to disable sorting while inserting items because this
> may lead to stringe behaviour. Also if you want to display checkboxes
> these should be set by
> QTableWidgetItem.setFlags(QTablewidgetItem.flags() |
> Qt.ItemIsUSerCheckable)) and setCheckState()  rather than doing a
> QTableWidget.setCellWidget(), because this is way faster. The combooxes
> can be inserted with setCellWidget, but be aware that you may run into
> performance issues if you add a lot of them.
>
> Alternatively you could subclass the QTableWidgetItem and override the<
> operator to provide your own sorting, which will be - of course -
> solower because implemented in python.
>
> Finally when dealing with large datasets I would recommend going for the
> true model/view approach with QTableView, QTableModel and
> QStyledItemDelegate, but those are more hard to use.
>
> Cheers
>
> Sebastian
>
>
>   Am 06.04.2012 02:50, schrieb Frank Rueter | OHUfx:
>> Hi guys,
>>
>> I'm working on a table that has ItemWidgets (comboBoxes, checkBoxes etc)
>> in some cells and I'm trying to figure out how to write a custom sort
>> behaviour that will enable me to sort the table by columns containing
>> widgets using the respective widgets' current value (e.g. show all rows
>> with a checked checkBox first, followed by all rows with an unchecked
>> checkBox).
>>
>> Has anyone done this before?
>> Any pointers would be fabulous!
>>
>> Cheers,
>> frank
>>
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