[PySide] QStandardItemModel vs QAbstractItemModel

[Fries, Samuel]

Hey Frank,

I'm using QAbstractItemModel as the parent class in a couple of my MVC components. It was pretty easy to implement, and works nicely. I wrote the code using it a while back, so I don't really recall the impetus for not using QStandardItemModel (I'd wager it was my general preference to avoid QVariant).

-Sam Fries
AIMS Group, LLNL

From: PySide <pyside-bounces at qt-project.org<mailto:pyside-bounces at qt-project.org>> on behalf of Frank Rueter|OHUfx <frank at ohufx.com<mailto:frank at ohufx.com>>
Organization: OHUfx
Date: Tuesday, January 12, 2016 12:22 PM
To: PySide <PySide at qt-project.org<mailto:PySide at qt-project.org>>
Subject: Re: [PySide] QStandardItemModel vs QAbstractItemModel

Anybody still on this list in 2016? :)

On 11/01/16 9:48 am, Frank Rueter | OHUfx wrote:
Hi,

I am building a spreadsheet widget for custom data and will need many custom editors and item delegates.
The amount of items will potentially be in the 100,000s and a lot of filtering will be going on.

I started using the QStandardItemModel and so far things are working fine, but I haven't implemented the delegates or editors yet, and I will also have to override the data()/setData().

I'm wondering if I should switch to using the QAbstractItemModel before proceeding but can't make up my mind.
I am using some of the QStandardItemModel's method's, such as clear() and item() and setItem(), but I guess those are easy to re-implement.

The docs say that one should consider using QAbstractItemModel for efficiency and flexibility, but I am struggling to make an educated decision because I haven't used model/views often enough yet to know about all the pros and cons.

Any advice on how to make that decision would be much appreciated. I'd hate to finish writing the code only to find out that it's too slow for large data sets, and then re-jig everything to use the QAbstractItemModel.


Thanks,
frank

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