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Auto Generating Model code

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  • C Offline
    C Offline
    clogwog
    wrote on 7 Nov 2017, 23:58 last edited by
    #1

    Hi,

    I have just gone through a simple ToDo list tutorial (https://www.youtube.com/watch?v=9BcAYDlpuT8) that uses QML and stores the model in C++

    There seems to be a lot of 'gotcha's that need to be implemented for each model in C++ (overriding QAbstractListModel). I guess once you do a few it gets easier.

    My Question: Is there an Code generator around that you give an IDL to that can do all this tedious work for you ? (In the same way that DJango does this perhaps ?)

    thanks,
    tom

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    • S Offline
      S Offline
      SGaist
      Lifetime Qt Champion
      wrote on 8 Nov 2017, 21:30 last edited by
      #2

      Hi,

      AFAIK, no, there's no such tool.

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      • C Offline
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        clogwog
        wrote on 10 Nov 2017, 09:07 last edited by
        #3

        thanks..
        if you haven't seen it i bet it doesn't exist

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        • C Offline
          C Offline
          clogwog
          wrote on 10 Nov 2017, 12:37 last edited by
          #4

          Just found Thomas Boutroue's macro's that look after a lot of the gotcha's

          https://www.youtube.com/watch?v=96XAaH97XYo

          very interesting . i'll try the same todo list with this and report back

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          • S Offline
            S Offline
            SGaist
            Lifetime Qt Champion
            wrote on 10 Nov 2017, 12:50 last edited by
            #5

            The fact that I'm not aware of such a tool doesn't mean it doesn't exist. There are lots of stuff going on around Qt ;)

            IIRC, he has several libraries and helpers that might be of interest, thanks for the reminder !

            Interested in AI ? www.idiap.ch
            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

            C 1 Reply Last reply 12 Nov 2017, 04:42
            0
            • S SGaist
              10 Nov 2017, 12:50

              The fact that I'm not aware of such a tool doesn't mean it doesn't exist. There are lots of stuff going on around Qt ;)

              IIRC, he has several libraries and helpers that might be of interest, thanks for the reminder !

              C Offline
              C Offline
              clogwog
              wrote on 12 Nov 2017, 04:42 last edited by
              #6

              Oh wow. I just re-implemented the todo list example with heaps less code.
              i think i'll keep using this.

              now see if i can also use QuickFlux in the same application....
              (third try but i usually get lost towards the end of the tutorial )

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              • V Offline
                V Offline
                VRonin
                wrote on 13 Nov 2017, 10:36 last edited by
                #7

                What I usually feel like suggesting is not to subclass the model at all. use QStandardItemModel only via the QAbstractItemModel interface (you can force yourself by declaring QAbstractItemModel* model =new QStandardItemModel(parent);).

                If the model's performance is really a drag for your application you can go the length and implement a model subclass (with all its gotchas) changing just 1 line in your existing code

                "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
                ~Napoleon Bonaparte

                On a crusade to banish setIndexWidget() from the holy land of Qt

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                1

                6/7

                12 Nov 2017, 04:42

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