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I would like to register a collection property for a list to a property group that I have already created.

Unfortunately, this doesn't seem to work:

bpy.types.Scene.my_group = PointerProperty(type=MyGroupClass)
bpy.types.Scene.my_group.my_list = CollectionProperty(type=MyListClass)

This could help tidy up my code by simply accessing the list through the property group, rather than just from the scene like normal. Is this possible?

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  • $\begingroup$ define the collection my_list as a member of the propertygroup. MyGroupClass $\endgroup$
    – batFINGER
    Jan 16, 2021 at 18:26
  • $\begingroup$ Yep, that's it, thanks! $\endgroup$
    – Strike Digital
    Jan 16, 2021 at 20:02

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Thanks to @batFINGER for the answer.

I just had to use this code instead, using the actual class name instead:

bpy.types.Scene.my_group = PointerProperty(type=MyGroupClass)
MyGroupClass.my_list = CollectionProperty(type=MyListClass)
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    $\begingroup$ well kinda, this is monkey patching but it works Ok. Would rather see class Foo(PropertyGroup): my_list : bpy.props.CollectionProperty(type=Bar) and then Scene.foo = PointerProperty(type=Foo). But would need to monkey patch to have a collection that is also type Foo. $\endgroup$
    – batFINGER
    Jan 16, 2021 at 20:06

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