Object of type ViewProviderDocumentObject is not JSON serializable about lattice2 HOT 6 CLOSED

well, apparently, FreeCAD is now using json instead of pickle. For pickle, i have

    def __getstate__(self):
        return None

    def __setstate__(self,state):
        return None

that is supposed to prevent these errors. For json however, it seems like i can't override the serializer... I guess i have to dig fc forum a bit to figure out how to fix it, lattice2 can't be the only addon that is affected...

from lattice2.

well, apparently, FreeCAD is now using json instead of pickle.

Digging through docs and texts they seem to be doing that for quite a long time, I have found mentioning it in some text for 0.19-dev. So maybe they just disabled something now.

I don't know anything about the internal structures work or how addons are developed. However, https://wiki.freecad.org/Scripted_objects suggests overriding dumps() and loads() . See also the end of the https://forum.freecad.org/viewtopic.php?t=40812 discussion.

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ha, thanks, that should do the trick!

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Is there a fix for this yet? I'm seeing this with latest Lattice2 and 0.21.2

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should be fixed now, enjoy =)
Sorry, i'm bad at maintaining my workbenches well these days...

from lattice2.

should be fixed now, enjoy =) Sorry, i'm bad at maintaining my workbenches well these days...

Thanks! And I understand. Hard to keep up with stuff.

from lattice2.