Introducing IommiModel

[jlubcke]

No description provided.

[boxed]

@jlubcke thinks there is a better name for get_annotation_attributes, so we'll wait a while to see if one appears.

[boxed]

We should add this to IommiModel:

    def __repr__(self):
        return f'<{self.__class__.__name__} pk={self.pk}>'

and where did we stand on making IommiModel an empty class and have the essential functionality in a mixin? We talked about it at least...

[boxed]

Other name suggestions for get_annotation_attributes:

• get_annotation_attributes
• get_custom_attributes
• get_allowed_extra_attributes
• get_extra_attributes

[jlubcke]

Should we only do this if the user has not passed any other update_fields. (Or should we assert there are none? Or verify that the passed is a subset of what we expect?

[boxed]

Subset feels more logical. But it's also a bit weird... Maybe warn if update_fields is passed at all? My gut feeling is that you should pick a method, but also that you want it to be possible to slowly migrate to this system.