[PyQt] Model/View programming

[Philippe Crave]

finally, I did it like that:
I don't know if it's a good way to access the model in the view, but it works


class CustomQTableView(QTableView):

    def __init__(self):
        super(CustomQTableView, self).__init__()


    def show_hide_rows(self, choice):
        """choice comes from a checkox"""
        nb_row = self.model().rowCount()

        if choice == 0:
            for row in range(nb_row):
                if self.isRowHidden(row):
                    self.setRowHidden(row, False)
        elif choice == 2:
            for row in range(nb_row):
                if self.model().index(row, 1).data().toString() == '':
                    self.setRowHidden(row, True)


2010/5/6 Scott Frankel <frankel at circlesfx.com>:
>
> I have not yet found a better way to do this than by first building a list
> of rows you want to be visible, then setting the model's filter with
> setFilter().
>
>
>
> On May 6, 2010, at 12:24 PM, Philippe Crave wrote:
>
>> Yes, I use that in the model also.
>> but now, I need to iterate over the row, in the tableView. I want to
>> hide row when the data is an empty string.
>> I found that I can get the string with
>> self.currentIndex().data().toString()
>> so, I suppose that I have to find a way to modify the currentIndex
>>
>>
>> 2010/5/6 Scott Frankel <frankel at circlesfx.com>:
>>>
>>> On May 6, 2010, at 9:46 AM, Philippe Crave wrote:
>>>
>>>> actually, I just want to loop over the rows.
>>>> I do not find a max_row, or an iterator over the rows of a Table.
>>>
>>> Take a look at your model's rowCount() and record() methods.  I think
>>> you'll
>>> want to be iterating over the records in your model, not the tableview
>>> itself.
>>>
>>> Scott
>>>
>>>
>>>> 2010/5/6 Philippe Crave <philippe.crave at gmail.com>:
>>>>>
>>>>> thank you, both of you !
>>>>> I will check the filtering solution.
>>>>> I am now implementing the setColumnHidden. just have to customize a
>>>>> QTableView class. seems simple.
>>>>>
>>>>> by the way, do you know how to get the total number of row in a table ?
>>>>> i must be blind, but I could not find it.
>>>>>
>>>>> 2010/5/6 Christian Brugger <brugger.chr at googlemail.com>:
>>>>>>
>>>>>> Just to outline my idea a bit more:
>>>>>> Yeah one model class and one view class. But with different filters
>>>>>> between
>>>>>> model and views. You wouldn't just attach your 2 views to your model,
>>>>>> but
>>>>>> rather would attach each view to an individual filter (could be two
>>>>>> objects
>>>>>> of the same custom filter class) and then would attach both filters to
>>>>>> your
>>>>>> model. Such a custom filter could be created as described in the docs:
>>>>>>
>>>>>>
>>>>>> http://doc.trolltech.com/4.6/model-view-proxy-models.html#custom-filtering-models
>>>>>> But as far as I see, Benjamin has found a much simpler solution, if
>>>>>> you
>>>>>> only
>>>>>> want so hide columns. I would test his suggestion first and check if
>>>>>> it
>>>>>> fits
>>>>>> your needs.
>>>>>> Christian
>>>>>>
>>>>>> On Thu, May 6, 2010 at 5:15 PM, Philippe Crave
>>>>>> <philippe.crave at gmail.com>
>>>>>> wrote:
>>>>>>>
>>>>>>> looks like that I have to do a QAbstractTableModel for each
>>>>>>> QTableView,
>>>>>>> no
>>>>>>> ?
>>>>>>> sounds strange, I thought that the idea was to have only one model
>>>>>>> that will serve data to several views.
>>>>>>>
>>>>>>> 2010/5/6 Philippe Crave <philippe.crave at gmail.com>:
>>>>>>>>
>>>>>>>> Hello,
>>>>>>>>
>>>>>>>> I am reading the chapter 14 of Mark Summerfield.
>>>>>>>> I work with custom model and custom delegate.
>>>>>>>>
>>>>>>>> in the sample from the book, we have 1 tableView linked to one
>>>>>>>> model.
>>>>>>>> It's simple to get 2 tableView linked to the same model.
>>>>>>>>
>>>>>>>> my Model has got 4 columns.
>>>>>>>> I would like that TableView_1 show the 2 first column only, and
>>>>>>>> TableView_2 show the 2 others.
>>>>>>>>
>>>>>>>> what is the good way to do it ?
>>>>>>>> actually, the content of the model will be given to the view in the
>>>>>>>> data(self, index, role=Qt.DisplayRole) method from the custom model.
>>>>>>>> is there a way to know which view needs data in that data method ?
>>>>>>>>
>>>>>>>> thanks,
>>>>>>>>
>>>>>>>> Philippe
>>>>>>>>
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>>>>>>
>>>>>>
>>>>>
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