SortFilterProxyModel

[arkanoid87]

I need to implement sorting and filtering over my TableViews.

I could sort and filter the model directly, but this is against MVC, or I could use SortFilterProxyModel
https://doc.qt.io/qt-5/qsortfilterproxymodel.html

how difficult would be do add this to dotherside? (final use would be nimqml in my case)

Here's an example:
https://www.youtube.com/watch?v=-GOfY1kEP2A

[filcuc]

Adding support for SortFilterProxy involves some work so don't expect to appear soon.
That said you can simply split the Model from QAIM in your Nim codebase. Filter and sorting could be done by emitting beginResetModel or doing proper insertion/removal through the beginInsertRows/beginRemoveRows.
In practice you can have a pure Nim type for holding your plain Model and create a QAIM for modelling the filtering/sorting part.
Just for confirming what i wrote:

• SortFiltering is mostly unrelated on MVC. Think about most of Web applications. Most of the time the filtering sorting is done server side and not client side (Qt in a native application is like html/javascript in a web one). Furthermore server side filtering/sorting is necessary when the amount of data is big
• QSortFilterProxyModels are usually wrapper of beginInsert/beginRemove
• QSortFilterProxyModels a convenience but most of the time for performance reasons you should subclass QAIM and reimplement the sort() method (sadly it's not exposed in DOtherSide).

With all that said, yes we should add QSortFilterProxyModel in future but i don't consider this feature blocking

[arkanoid87]

Thanks for the feedback. I was not aware that QSortFilterProxyModel was simply a wrapper.
If there's no performance difference in editing QAIM via backend, I agree with you. I'll wrap a quick demo to stress this point.

Sadly I find the lack of a complete table in QML a big time waster. Basically what they call table is just really a grid, and implementing filter/sorting and stuff really sounds like something that should already be there. Are you aware of existing (solid) qml code for that?

Thanks

[filcuc]

For answering to your question I need some more feedback on what you’re trying to achieve. Are you developing a desktop oriented app that uses table views (excel like)? Or a list view with a row of items is enough? That said I’m not aware of good prebuilt package for a full tableview. Most of the times I roll out my own. Il giorno dom 9 gen 2022 alle 21:41 arkanoid87 ***@***.***> ha scritto:

Thanks for the feedback. I was not aware that QSortFilterProxyModel was simply a wrapper. If there's no performance difference in editing QAIM via backend, I agree with you. I'll wrap a quick demo to stress this point. Sadly I find the lack of a complete table in QML a big time waster. Basically what they call table is just really a grid, and implementing filter/sorting and stuff really sounds like something that should already be there. Are you aware of existing (solid) qml code for that? Thanks — Reply to this email directly, view it on GitHub <#106 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABWTXI2INCULRYSRN67237TUVHXF5ANCNFSM5LRLC4EQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you commented.Message ID: ***@***.***>

-- Filippo Cucchetto

[arkanoid87]

I'm building a desktop app with (wannabe) excel like behavior.
Sorry if this is more a Q&A comment, but is there a "curated list of QML resources" that fills this kind of holes in QML libs?