There are a few open tickets that may be related:
https://code.djangoproject.com/ticket/23521 - removal of concrete Model
from bases doesn't remove it from ModelState bases
https://code.djangoproject.com/ticket/26488 - migrate raises
InvalidBasesError if you rename a multitable inheritance base model
On Tuesday, December 13, 2016 at 12:40:45 PM UTC-5, riccardo.magliocchetti
wrote:
>
> Hello,
>
> on a journey to change a model from a concrete inheritance to an abstract
> one
> i've created a migration operation to change the bases of a model state in
> the
> migrations machinery. Is there a reason that there's not one in django?
> Would it
> be interesting to add it?
>
> thanks in advance
>
> --
> Riccardo Magliocchetti
> @rmistaken
>
> http://menodizero.it
>
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